S31/S31B-LB/LS -- LoRaWAN Outdoor Temperature & Humidity Sensor User Manual

The Dragino S31x-LB/LS is a (% style="color:blue" %)**LoRaWAN Temperature and Humidity Sensor**(%%) for Internet of Things solution. It is used to measure the (% style="color:blue" %)**surrounding environment temperature and relative air humidity precisely**(%%), and then upload to IoT server via LoRaWAN wireless protocol.

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The temperature & humidity sensor used in S31x-LB/LS is SHT31, which is fully calibrated, linearized, and temperature compensated digital output from Sensirion, it provides a strong reliability and long-term stability. The SHT31 is fixed in a (% style="color:blue" %)**waterproof anti-condensation casing**(%%) for long term use.

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The LoRa wireless technology used in S31x-LB/LS allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.

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S31x-LB/LS supports (% style="color:blue" %)**Temperature & Humdity alarm feature**(%%), user can set temperature alarm for instant notice. S31x-LB/LS supports Datalog feature, it can save the data when there is no LoRaWAN network and uplink when network recover.

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S31x-LB/LS (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use.

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S31x-LB/LS is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%) or (% style="color:blue" %)**solar powered + Li-ion battery**(%%) it is designed for long term use up to 5 years.

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Each S31x-LB/LS is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.

== 1.2 Features ==

* LoRaWAN 1.0.3 Class A

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* Ultra-low power consumption

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* External 3 meters SHT31 probe (For S31-LB)

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* Measure range -40°C ~~ 80°C

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* Temperature & Humidity alarm

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* Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865

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* Support Bluetooth v5.1 and LoRaWAN remote configure

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* Support wireless OTA update firmware

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* Uplink on periodically

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* Downlink to change configure

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* 8500mAh Li/SOCl2 Battery (S31/S31B-LB)

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* Solar panel + 3000mAh Li-ion battery (S31/S31B-LS)

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== 1.3 Specification ==

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(% style="color:#037691" %)**Common DC Characteristics:**

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* Supply Voltage: Built-in Battery , 2.5v ~~ 3.6v

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* Operating Temperature: -40 ~~ 85°C

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(% style="color:#037691" %)**Temperature Sensor:**

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* Range: -40 to + 80°C

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* Accuracy: ±0.2 @ 0-90 °C

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* Resolution: 0.1°C

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* Long Term Shift: <0.03 °C/yr

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(% style="color:#037691" %)**Humidity Sensor: **

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* Range: 0 ~~ 99.9% RH

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* Accuracy: ± 2%RH ( 0 ~~ 100%RH)

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* Resolution: 0.01% RH

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* Long Term Shift: <0.25 %RH/yr

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(% style="color:#037691" %)**LoRa Spec:**

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* Frequency Range, Band 1 (HF): 862 ~~ 1020 Mhz

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* Max +22 dBm constant RF output vs.

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* RX sensitivity: down to -139 dBm.

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* Excellent blocking immunity

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(% style="color:#037691" %)**Battery:**

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* Li/SOCI2 un-chargeable battery

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* Capacity: 8500mAh

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* Self-Discharge: <1% / Year @ 25°C

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* Max continuously current: 130mA

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* Max boost current: 2A, 1 second

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(% style="color:#037691" %)**Power Consumption**

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* Sleep Mode: 5uA @ 3.3v

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* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm

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== 1.4 Sleep mode and working mode ==

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(% style="color:blue" %)**Deep Sleep Mode: **(%%)Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life.

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(% style="color:blue" %)**Working Mode:** (%%)In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.

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== 1.5 Button & LEDs ==

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-LB_Waterproof_RS485UART_to_LoRaWAN_Converter/WebHome/image-20240103160425-4.png?rev=1.1||alt="image-20240103160425-4.png"]]

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

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|=(% style="width: 167px;background-color:#4F81BD;color:white" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 226px;background-color:#4F81BD;color:white" %)**Action**

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|(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((

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If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.

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Meanwhile, BLE module will be active and user can connect via BLE to configure device.

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|(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((

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(% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:#037691" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network.

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(% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.

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Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.

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|(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.

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== 1.6 BLE connection ==

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S31x-LB/LS support BLE remote configure.

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BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:

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* Press button to send an uplink

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* Press button to active device.

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* Device Power on or reset.

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If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.

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== 1.7 Pin Definitions ==

[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/image-20240926134323-1.png?rev=1.1||alt="image-20240926134323-1.png"]]

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== 1.8 Hardware Variant ==

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(% border="1" cellspacing="3" style="width:460px" %)

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|=(% style="width: 102px;background-color:#4F81BD;color:white" %)Model|=(% style="width: 182px; background-color:#4F81BD;color:white" %)Photo|=(% style="width: 176px; background-color:#4F81BD;color:white" %)Probe Info

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|(% style="width:102px" %)(((

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S31-LB/LS

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(% style="text-align:center" %)

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[[image:image-20240104165223-7.png]]

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)))|(% style="width:176px" %)(((

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1 x SHT31 Probe

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Cable Length : 2 meters

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|(% style="width:102px" %)(((

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S31B-LB/LS

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(% style="text-align:center" %)

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[[image:image-20240104165338-9.png]]

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)))|(% style="width:176px" %)(((

1 x SHT31 Probe

Installed in device.

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(% style="display:none" %)

== 1.9 Mechanical ==

=== 1.9.1 for LB version ===

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[[image:image-20250409174350-1.jpeg]]

=== 1.9.2 for LS version ===

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[[image:image-20250409174410-2.jpeg]]

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= 2. Configure S31x-LB/LS to connect to LoRaWAN network =

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== 2.1 How it works ==

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The S31x-LB/LS is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the S31x-LB/LS. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.

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== 2.2 Quick guide to connect to LoRaWAN server (OTAA) ==

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Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.

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The LPS8V2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.

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(% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from S31x-LB/LS.

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Each S31x-LB/LS is shipped with a sticker with the default device EUI as below:

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[[image:image-20230426084152-1.png||alt="图片-20230426084152-1.png" height="233" width="502"]]

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You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:

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(% style="color:blue" %)**Register the device**

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[[image:image-20250328173145-1.jpeg]]

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(% style="color:blue" %)**Add APP EUI and DEV EUI**

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[[image:image-20250328173203-2.jpeg]]

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(% style="color:blue" %)**Add APP EUI in the application**

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[[image:image-20250328173224-3.jpeg]]

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(% style="color:blue" %)**Add APP KEY**

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[[image:image-20250328173243-4.jpeg]]

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(% style="color:blue" %)**Step 2:**(%%) Activate on S31x-LB/LS

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Press the button for 5 seconds to activate the S31x-LB/LS.

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(% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.

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After join success, it will start to upload messages to TTN and you can see the messages in the panel.

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== 2.3 Uplink Payload ==

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=== 2.3.1 Device Status, FPORT~=5 ===

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Users can use the downlink command(**0x26 01**) to ask S31x-LB/LS to send device configure detail, include device configure status. S31x-LB/LS will uplink a payload via FPort=5 to server.

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The Payload format is as below.

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

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|(% colspan="6" style="background-color:#4f81bd; color:white" %)**Device Status (FPORT=5)**

Example parse in TTNv3

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[[image:image-20230524144422-1.png||height="174" width="1080"]]

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(% style="color:#037691" %)**Sensor Model**(%%): For S31x-LB/LS, this value is 0x0A

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(% style="color:#037691" %)**Firmware Version**(%%): 0x0100, Means: v1.0.0 version

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(% style="color:#037691" %)**Frequency Band**:

0x01: EU868

0x02: US915

0x03: IN865

0x04: AU915

0x05: KZ865

0x06: RU864

0x07: AS923

0x08: AS923-1

0x09: AS923-2

0x0a: AS923-3

0x0b: CN470

0x0c: EU433

0x0d: KR920

0x0e: MA869

(% style="color:#037691" %)**Sub-Band**:

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AU915 and US915:value 0x00 ~~ 0x08

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CN470: value 0x0B ~~ 0x0C

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Other Bands: Always 0x00

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(% style="color:#037691" %)**Battery Info**:

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Check the battery voltage.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

=== 2.3.2 Sensor Data. FPORT~=2 ===

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Sensor Data is uplink via FPORT=2

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)

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|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((

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**Size(bytes)**

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)))|=(% style="width: 40px;background-color:#4F81BD;color:white" %)2|=(% style="width: 90px;background-color:#4F81BD;color:white" %)4|=(% style="width: 150px; background-color: #4F81BD;color:white" %)1|=(% style="width: 80px; background-color: #4F81BD;color:white" %)**2**|=(% style="width: 80px; background-color: #4F81BD;color:white" %)2

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|(% style="width:99px" %)Value|(% style="width:69px" %)(((

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Battery

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Unix TimeStamp

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Alarm Flag & MOD& Level of PA8

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Temperature

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Humidity

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[[image:image-20230524144456-2.png||height="180" width="1142"]]

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==== (% style="color:#4472c4" %)**Battery**(%%) ====

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Sensor Battery Level.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

==== (% style="color:#4472c4" %)**Temperature**(%%) ====

**Example**:

If payload is: 0105H: (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree

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If payload is: FF3FH : (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.

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(FF3F & 8000:Judge whether the highest bit is 1, when the highest bit is 1, it is negative)

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==== (% style="color:#4472c4" %)**Humidity**(%%) ====

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Read:0x(0197)=412 Value: 412 / 10=41.2, So 41.2%

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==== (% style="color:#4472c4" %)**Alarm Flag & MOD & Level of PA8**(%%) ====

**Example:**

If payload & 0x01 = 0x01 **~-~->** This is an Alarm Message.It means that the temperature and humidity exceed the alarm value or trigger an interrupt.

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If payload & 0x01 = 0x00 **~-~->** This is a normal uplink message, no alarm.

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If payload & 0x80>>7 = 0x01 **~-~->** The PA8 is low level.

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If payload & 0x80>>7 =0x00 **~-~->** The PA8 is high level.

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If payload >> 2 = 0x00 **~-~->** means MOD=1, This is a sampling uplink message.

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If payload >> 2 = 0x31 **~-~->** means MOD=31, this message is a reply message for polling, this message contains the alarm settings. see [[this link>>path:#HPolltheAlarmsettings:]] for detail.

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== 2.4 Payload Decoder file ==

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In TTN, use can add a custom payload so it shows friendly reading

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In the page (% style="color:#037691" %)**Applications ~-~-> Payload Formats ~-~-> Custom ~-~-> decoder**(%%) to add the decoder from:

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[[https:~~/~~/github.com/dragino/dragino-end-node-decoder/tree/main/S31-LB%26S31B-LB>>https://github.com/dragino/dragino-end-node-decoder/tree/main/S31-LB%26S31B-LB]]

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== 2.5 Datalog Feature ==

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Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, S31x-LB/LS will store the reading for future retrieving purposes.

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=== 2.5.1 Ways to get datalog via LoRaWAN ===

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Set PNACKMD=1, S31x-LB/LS will wait for ACK for every uplink, when there is no LoRaWAN network,S31x-LB/LS will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.

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a) S31x-LB/LS will do an ACK check for data records sending to make sure every data arrive server.

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b) S31x-LB/LS will send data in **CONFIRMED Mode** when PNACKMD=1, but S31x-LB/LS won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if S31x-LB/LS gets a ACK, S31x-LB/LS will consider there is a network connection and resend all NONE-ACK messages.

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=== 2.5.2 Unix TimeStamp ===

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S31x-LB/LS uses Unix TimeStamp format based on

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[[image:image-20250328173339-5.jpeg]]

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User can get this time from link: [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :

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Below is the converter example

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[[image:image-20250328173355-6.jpeg]]

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So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25

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=== 2.5.3 Set Device Time ===

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User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.

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Once S31x-LB/LS Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to S31x-LB/LS. If S31x-LB/LS fails to get the time from the server, S31x-LB/LS will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).

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(% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**

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=== 2.5.4 Datalog Uplink payload (FPORT~=3) ===

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The Datalog uplinks will use below payload format.

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**Retrieval data payload:**

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:500px" %)

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|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((

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**Size(bytes)**

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)))|=(% style="width: 40px; background-color:#4F81BD;color:white" %)**2**|=(% style="width: 55px; background-color:#4F81BD;color:white" %)**2**|=(% style="width: 65px; background-color:#4F81BD;color:white" %)**2**|=(% style="width: 180px; background-color:#4F81BD;color:white" %)**1**|=(% style="width: 100px; background-color:#4F81BD;color:white" %)**4**

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|(% style="width:103px" %)Value|(% style="width:68px" %)(((

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ignore

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(((

Humidity

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)))|(% style="width:87px" %)(((

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Temperature

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Poll message flag & Alarm Flag& Level of PA8

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)))|(% style="width:137px" %)Unix Time Stamp

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**Poll message flag & Alarm Flag & Level of PA8:**

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[[image:image-20230524114302-1.png||height="115" width="736"]]

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**No ACK Message**: 1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for **PNACKMD=1** feature)

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**Poll Message Flag**: 1: This message is a poll message reply.

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* Poll Message Flag is set to 1.

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* Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.

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For example, in US915 band, the max payload for different DR is:

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**a) DR0:** max is 11 bytes so one entry of data

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**b) DR1:** max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)

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**c) DR2:** total payload includes 11 entries of data

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**d) DR3: **total payload includes 22 entries of data.

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If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0

**Example:**

If S31x-LB/LS has below data inside Flash:

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[[image:image-20230524114654-2.png]]

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If user sends below downlink command: 31646D84E1646D856C05

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Where : Start time: 646D84E1 = time 23/5/24 03:30:41

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Stop time: 646D856C= time 23/5/24 03:33:00

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**S31x-LB/LS will uplink this payload.**

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[[image:image-20230524114826-3.png||height="448" width="1244"]]

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00 00 02 36 01 10 40 64 6D 84 E1 00 00 02 37 01 10 40 64 6D 84 F8 00 00 02 37 01 0F 40 64 6D 85 04 00 00 02 3A 01 0F 40 64 6D 85 18 00 00 02 3C 01 0F 40 64 6D 85 36 00 00 02 3D 01 0E 40 64 6D 85 3F 00 00 02 3F 01 0E 40 64 6D 85 60 00 00 02 40 01 0E 40 64 6D 85 6A

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Where the first 11 bytes is for the first entry:

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00 00 02 36 01 10 40 64 6D 84 E1

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**Hum**=0x0236/10=56.6

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**Temp**=0x0110/10=27.2

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**poll message flag & Alarm Flag & Level of PA8**=0x40,means reply data,sampling uplink message,the PA8 is low level.

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**Unix time** is 0x646D84E1=1684899041s=23/5/24 03:30:41

)))

(% aria-label="数据 URI 图像图像小部件" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||alt="数据 URI 图片" data-widget="image" draggable="true" height="15" role="presentation" title="单击并拖动以移动" width="15"]](% aria-label="数据 URI 图像图像小部件" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||alt="数据 URI 图片" draggable="true" height="15" role="presentation" title="单击并拖动以移动" width="15"]](% aria-label="数据 URI 图像图像小部件" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="单击并拖动以调整大小" %)的(% aria-label="数据 URI 图像图像小部件" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||alt="数据 URI 图片" data-widget="image" draggable="true" height="15" role="presentation" title="单击并拖动以移动" width="15"]](% aria-label="数据 URI 图像图像小部件" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||alt="数据 URI 图片" draggable="true" height="15" role="presentation" title="单击并拖动以移动" width="15"]](% aria-label="数据 URI 图像图像小部件" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="单击并拖动以调整大小" %)的

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539

== 2.6 Temperature Alarm Feature ==

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542

S31x-LB/LS work flow with Alarm feature.

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545

[[image:image-20230524110125-3.png||height="768" width="1115"]]

== 2.7 Frequency Plans ==

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The S31x-LB/LS uses OTAA mode and below frequency plans by default. Each frequency band use different firmware, user update the firmware to the corresponding band for their country.

553

554

[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]

555

556

557

== 2.8 Firmware Change Log ==

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**Firmware download link: **[[https:~~/~~/www.dropbox.com/sh/fis3g6nmhv0eokg/AAC6BcCZaX4BdqZkduUvZ3jIa?dl=0>>https://www.dropbox.com/sh/fis3g6nmhv0eokg/AAC6BcCZaX4BdqZkduUvZ3jIa?dl=0]]

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562

563

= 3. Configure S31x-LB/LS =

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565

== 3.1 Configure Methods ==

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S31x-LB/LS supports below configure method:

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* AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].

571

* AT Command via UART Connection : See [[UART Connection>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].

572

* LoRaWAN Downlink. Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.

573

574

== 3.2 General Commands ==

575

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These commands are to configure:

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579

* General system settings like: uplink interval.

580

* LoRaWAN protocol & radio related command.

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582

They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:

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584

[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]

585

586

587

== 3.3 Commands special design for S31x-LB/LS ==

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589

590

These commands only valid for S31x-LB/LS, as below:

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593

=== 3.3.1 Set Transmit Interval Time ===

594

595

596

Feature: Change LoRaWAN End Node Transmit Interval.

597

598

(% style="color:blue" %)**AT Command: AT+TDC**

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600

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

601

|=(% style="width: 156px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 137px;background-color:#4F81BD;color:white" %)**Function**|=(% style="background-color:#4F81BD;color:white" %)**Response**

602

|(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((

603

30000

604

OK

605

the interval is 30000ms = 30s

606

)))

607

|(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((

608

OK

609

Set transmit interval to 60000ms = 60 seconds

610

)))

611

612

(% style="color:blue" %)**Downlink Command: 0x01**

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614

Format: Command Code (0x01) followed by 3 bytes time value.

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616

If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.

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* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds

619

* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds

620

621

=== 3.3.2 Get Device Status ===

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623

624

Send a LoRaWAN downlink to ask device send Alarm settings.

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626

(% style="color:blue" %)**Downlink Payload: **(%%)0x26 01

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628

Sensor will upload Device Status via FPORT=5. See payload section for detail.

629

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631

=== 3.3.3 Set Temperature Alarm Threshold ===

632

633

634

* (% style="color:blue" %)**AT Command:**

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636

(% style="color:#037691" %)**AT+SHTEMP=min,max**

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638

* When min=0, and max≠0, Alarm higher than max

639

* When min≠0, and max=0, Alarm lower than min

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* When min≠0 and max≠0, Alarm higher than max or lower than min

Example:

AT+SHTEMP=0,30 ~/~/ Alarm when temperature higher than 30.

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* (% style="color:blue" %)**Downlink Payload:**

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648

(% style="color:#037691" %)**0x(0C 01 00 1E)** (%%) ~/~/ Set AT+SHTEMP=0,30

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650

(% style="color:red" %)**(note: 3^^rd^^ byte= 0x00 for low limit(not set), 4^^th^^ byte = 0x1E for high limit: 30)**

651

652

653

=== 3.3.4 Set Humidity Alarm Threshold ===

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* (% style="color:blue" %)**AT Command:**

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658

(% style="color:#037691" %)**AT+SHHUM=min,max**

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660

* When min=0, and max≠0, Alarm higher than max

661

* When min≠0, and max=0, Alarm lower than min

662

* When min≠0 and max≠0, Alarm higher than max or lower than min

Example:

AT+SHHUM=70,0 ~/~/ Alarm when humidity lower than 70%.

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668

* (% style="color:blue" %)**Downlink Payload:**

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670

(% style="color:#037691" %)**0x(0C 02 46 00)**(%%) ~/~/ Set AT+SHTHUM=70,0

671

672

(% style="color:red" %)**(note: 3^^rd^^ byte= 0x46 for low limit (70%), 4^^th^^ byte = 0x00 for high limit (not set))**

673

674

675

=== 3.3.5 Set Alarm Interval ===

676

677

678

The shortest time of two Alarm packet. (unit: min)

679

680

* (% style="color:blue" %)**AT Command:**

681

682

(% style="color:#037691" %)**AT+ATDC=30** (%%) ~/~/ The shortest interval of two Alarm packets is 30 minutes, Means is there is an alarm packet uplink, there won't be another one in the next 30 minutes.

683

684

* (% style="color:blue" %)**Downlink Payload:**

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686

(% style="color:#037691" %)**0x(0D 00 1E)**(%%) **~-~--> ** Set AT+ATDC=0x 00 1E = 30 minutes

687

688

689

=== 3.3.6 Get Alarm settings ===

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691

692

Send a LoRaWAN downlink to ask device send Alarm settings.

693

694

* (% style="color:#037691" %)**Downlink Payload: **(%%)0x0E 01

**Example:**

[[image:image-20230524110211-4.png]]

**Explain:**

* Alarm & MOD bit is 0x7C, 0x7C >> 2 = 0x31: Means this message is the Alarm settings message.

703

704

=== 3.3.7 Set Interrupt Mode ===

705

706

707

Feature, Set Interrupt mode for PA8 of pin.

708

709

When AT+INTMOD=0 is set, PA8 is used as a digital input port.

710

711

(% style="color:blue" %)**AT Command: AT+INTMOD**

712

713

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

714

|=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 192px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 161px; background-color: rgb(79, 129, 189); color: white;" %)**Response**

715

|(% style="width:154px" %)AT+INTMOD=?|(% style="width:192px" %)Show current interrupt mode|(% style="width:161px" %)(((

716

0

717

OK

718

the mode is 0 =Disable Interrupt

719

)))

720

|(% style="width:154px" %)AT+INTMOD=2|(% style="width:192px" %)(((

721

0: Disable Interrupt

722

1: Trigger by rising and falling edge

723

2: Trigger by falling edge

724

3: Trigger by rising edge

725

)))|(% style="width:161px" %)OK

726

727

(% style="color:blue" %)**Downlink Command: 0x06**

728

729

Format: Command Code (0x06) followed by 3 bytes.

730

731

This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.

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733

* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode

734

* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger

735

736

=== 3.3.8 Set Power Output Duration ===

737

738

739

Control the output duration 5V . Before each sampling, device will

740

741

~1. first enable the power output to external sensor,

742

743

2. keep it on as per duration, read sensor value and construct uplink payload

744

745

3. final, close the power output.

746

747

(% style="color:blue" %)**AT Command: AT+5VT**

748

749

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

750

|=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 197px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Response**

751

|(% style="width:154px" %)AT+5VT=?|(% style="width:196px" %)Show 5V open time.|(% style="width:157px" %)0 (default)

752

OK

753

|(% style="width:154px" %)AT+5VT=1000|(% style="width:196px" %)Close after a delay of 1000 milliseconds.|(% style="width:157px" %)OK

754

755

(% style="color:blue" %)**Downlink Command: 0x07**

756

757

Format: Command Code (0x07) followed by 2 bytes.

758

759

The first and second bytes are the time to turn on.

760

761

* Example 1: Downlink Payload: 070000 **~-~-->** AT+5VT=0

762

* Example 2: Downlink Payload: 0701F4 **~-~-->** AT+5VT=500

763

764

=== 3.3.9 Print data entries base on page ===

765

766

767

Feature: Print the sector data from start page to stop page (max is 416 pages).

768

769

(% style="color:#4f81bd" %)**AT Command: AT+PDTA**

770

771

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

772

|(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**

773

|(% style="width:156px" %)(((

774

AT+PDTA=1,3

775

Print page 1 to 3

776

)))|(% style="width:311px" %)(((

777

8019500 19/6/26 16:48 1 2992 sht temp=28.21 sht hum=71.5 ds temp=27.31

778

8019510 19/6/26 16:53 1 2994 sht temp=27.64 sht hum=69.3 ds temp=26.93

779

8019520 19/6/26 16:58 1 2996 sht temp=28.39 sht hum=72.0 ds temp=27.06

780

8019530 19/6/26 17:03 1 2996 sht temp=27.97 sht hum=70.4 ds temp=27.12

781

8019540 19/6/26 17:08 1 2996 sht temp=27.80 sht hum=72.9 ds temp=27.06

782

8019550 19/6/26 17:13 1 2998 sht temp=27.30 sht hum=72.4 ds temp=26.68

783

8019560 19/6/26 17:22 1 2992 sht temp=26.27 sht hum=62.3 ds temp=26.56

8019570

8019580

8019590

80195A0

80195B0

80195C0

80195D0

80195E0

80195F0

OK

)))

(% style="color:#4f81bd" %)**Downlink Command:**

798

799

No downlink commands for feature

800

801

802

=== 3.3.10 Print last few data entries ===

803

804

805

Feature: Print the last few data entries

806

807

(% style="color:#4f81bd" %)**AT Command: AT+PLDTA**

808

809

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

810

|(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**

811

|(% style="width:156px" %)(((

812

AT+PLDTA=5

813

Print last 5 entries

814

)))|(% style="width:311px" %)(((

815

Stop Tx and RTP events when read sensor data

816

1 19/6/26 13:59 1 3005 sht temp=27.09 sht hum=79.5 ds temp=26.75

817

2 19/6/26 14:04 1 3007 sht temp=26.65 sht hum=74.8 ds temp=26.43

818

3 19/6/26 14:09 1 3007 sht temp=26.91 sht hum=77.9 ds temp=26.56

819

4 19/6/26 14:15 1 3007 sht temp=26.93 sht hum=76.7 ds temp=26.75

820

5 19/6/26 14:20 1 3007 sht temp=26.78 sht hum=76.6 ds temp=26.43

821

Start Tx and RTP events

OK

)))

(% style="color:#4f81bd" %)**Downlink Command:**

826

827

No downlink commands for feature

828

829

830

=== 3.3.11 Clear Flash Record ===

831

832

833

Feature: Clear flash storage for data log feature.

834

835

(% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**

836

837

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:503px" %)

838

|(% style="background-color:#4f81bd; color:white; width:157px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:137px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:209px" %)**Response**

839

|(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((

840

Clear all stored sensor data…

OK

)))

(% style="color:#4f81bd" %)**Downlink Command: 0xA3**

846

847

* Example: 0xA301 ~/~/ Same as AT+CLRDTA

848

849

= 4. Battery & Power Consumption =

850

851

852

S31x-LB use ER26500 + SPC1520 battery pack and S31x-LS use 3000mAh Recharable Battery with Solar Panel. See below link for detail information about the battery info and how to replace.

853

854

[[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .

855

856

857

= 5. OTA Firmware update =

858

859

860

(% class="wikigeneratedid" %)

861

User can change firmware S31x-LB/LS to:

862

863

* Change Frequency band/ region.

864

* Update with new features.

865

* Fix bugs.

866

867

Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/fis3g6nmhv0eokg/AAC6BcCZaX4BdqZkduUvZ3jIa?dl=0]]**

868

869

870

Methods to Update Firmware:

871

872

* (Recommanded way) OTA firmware update via wireless : **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]**

873

* Update through UART TTL interface : **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.

= 6. FAQ =

= 7. Order Info =

Part Number: (% style="color:blue" %)**S31-LB-XX / S31B-LB-XX**(%%)** or (% style="color:blue" %)S31-LS-XX / S31B-LS-XX(%%)**

883

884

(% style="color:red" %)**XX**(%%): The default frequency band

885

886

* (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band

887

888

* (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band

889

890

* (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band

891

892

* (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band

893

894

* (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band

895

896

* (% style="color:red" %)**US915**(%%): LoRaWAN US915 band

897

898

* (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band

899

900

* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band

= 8. Packing Info =

(% style="color:#037691" %)**Package Includes**:

906

907

* S31x-LB or S31x-LS LoRaWAN Temperature & Humidity Sensor

908

909

(% style="color:#037691" %)**Dimension and weight**:

* Device Size: cm

* Device Weight: g

* Package Size / pcs : cm

* Weight / pcs : g

= 9. Support =

* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.

923

924

* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[Support@dragino.cc>>mailto:Support@dragino.cc]].

Wiki source code of S31/S31B-LB/LS -- LoRaWAN Outdoor Temperature & Humidity Sensor User Manual

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