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Last modified by Mengting Qiu on 2024/09/05 17:35

From 84.2 to 84.1 From 86.6 to 86.5

From version 86.5

edited by Xiaoling
on 2023/09/12 10:52

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To version 84.2

edited by Xiaoling
on 2023/09/11 14:04

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- image-20230912085600-1.png
- image-20230912102813-2.png

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Title

@@ -1,1 +1,1 @@
--DDS45-NB -- NB-IoT Distance Detection Sensor User Manual
++DDS20-NB -- NB-IoT Ultrasonic Liquid Level Sensor User Manual

Content

@@ -1,14 +1,7 @@
  (% style="text-align:center" %)
--[[image:image-20230912085600-1.png||height="519" width="731"]]
++[[image:image-20230911134259-1.png||height="570" width="570"]]
--
--
--
--
--
--
--
  **Table of Contents:**
  {{toc/}}
@@ -20,22 +20,21 @@
  = 1. Introduction =
--== 1.1 What is DDS45-NB NB-IoT Distance Detection Sensor ==
++== 1.1 What is DDS20-NB NB-IoT Ultrasonic liquid level Sensor ==
--The Dragino DDS45-NB is a (% style="color:blue" %)** NB-IoT Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:blue" %)** ultrasonic sensing technology**(%%) for distance measurement, and (% style="color:blue" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The DDS45-NB can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
++The Dragino S31-NB and S31B-NB are (% style="color:blue" %)**NB-IoT Temperature and Humidity Sensor**(%%) for Internet of Things solution. It is used to measure the surrounding (% style="color:blue" %)**environment temperature and relative air humidity precisely**(%%), and then upload to IoT server via NB-IoT network*.
--It detects the distance (% style="color:blue" %)** between the measured object and the sensor**(%%), and and send IoT platform via NB-IoT network.
++The temperature & humidity sensor used in S31-NB 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.
--DDS45-NB supports different uplink methods including (% style="color:blue" %)**MQTT, MQTTs, UDP & TCP**(%%) for different application requirement, and support uplinks to various IoT Servers.
++S31-NB supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP**(%%) for different application requirement. and Support Uplinks to various IoT Servers.
--DDS45-NB (% style="color:blue" %)**supports BLE configure **(%%)and(% style="color:blue" %)** OTA update**(%%) which make user easy to use.
++S31-NB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), It is designed for long term use up to several years. (Real-world battery life depends on the use environment, update period and uplink method. Please check related Power Analyze report).
--DDS45-NB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long-term use up to severa years.
++*make sure you have NB-IoT coverage locally.
--DDS45-NB has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.
--[[image:image-20230912102813-2.png||height="320" width="923"]]
++[[image:image-20230911140426-2.png||height="320" width="951"]]
  == 1.2 Features ==
@@ -43,15 +43,13 @@
  * NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @H-FDD
  * Ultra-low power consumption
--* Distance Detection by Ultrasonic technology
--* Flat object range 30mm - 4500mm
--* Accuracy: ±(1cm+S*0.3%) (S: Distance)
--* Measure Angle: 60°
++* External 3 meters SHT31 probe (For S31-NB)
++* Measure range -40°C ~~ 85°C
++* Temperature & Humidity alarm
  * Multiply Sampling and one uplink
  * Support Bluetooth v5.1 remote configure and update firmware
  * Uplink on periodically
  * Downlink to change configure
--* IP66 Waterproof Enclosure
  * 8500mAh Battery for long term use
  * Nano SIM card slot for NB-IoT SIM
@@ -60,9 +60,23 @@
  (% style="color:blue" %)**Common DC Characteristics:**
--* Supply Voltage: 2.5v ~~ 3.6v
++* Supply Voltage: 2.1v ~~ 3.6v
  * Operating Temperature: -40 ~~ 85°C
++(% style="color:blue" %)**Temperature Sensor:**
++
++* Range: -40 to + 80°C
++* Accuracy: ±0.2 @ 0-90 °C
++* Resolution: 0.1°C
++* Long Term Shift: <0.03 °C/yr
++
++(% style="color:blue" %)**Humidity Sensor: **
++
++* Range: 0 ~~ 99.9% RH
++* Accuracy: ± 2%RH ( 0 ~~ 100%RH)
++* Resolution: 0.01% RH
++* Long Term Shift: <0.25 %RH/yr
++
  (% style="color:blue" %)**NB-IoT Spec:**
  (% style="color:#037691" %)**NB-IoT Module: BC660K-GL**
@@ -100,64 +100,25 @@
  * STOP Mode: 10uA @ 3.3v
  * Max transmit power: 350mA@3.3v
--== 1.4 Rated environmental conditions ==
++== 1.4 Applications ==
--(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
--|(% style="background-color:#4f81bd; color:white; width:163px" %)**Item**|(% style="background-color:#4f81bd; color:white; width:90px" %)**Minimum value**|(% style="background-color:#4f81bd; color:white; width:70px" %)**Typical value**|(% style="background-color:#4f81bd; color:white; width:87px" %)**Maximum value**|(% style="background-color:#4f81bd; color:white; width:40px" %)**Unit**|(% style="background-color:#4f81bd; color:white; width:50px" %)**Remarks**
--|(% style="width:174px" %)Storage temperature|(% style="width:86px" %)-25|(% style="width:66px" %)25|(% style="width:90px" %)80|(% style="width:48px" %)℃|(% style="width:203px" %)
--|(% style="width:174px" %)Storage humidity|(% style="width:86px" %) |(% style="width:66px" %)65%|(% style="width:90px" %)90%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
--|(% style="width:174px" %)Operating temperature|(% style="width:86px" %)-15|(% style="width:66px" %)25|(% style="width:90px" %)60|(% style="width:48px" %)℃|(% style="width:203px" %)
--|(% style="width:174px" %)Working humidity|(% style="width:86px" %)(((
--
++* Smart Buildings & Home Automation
++* Logistics and Supply Chain Management
++* Smart Metering
++* Smart Agriculture
++* Smart Cities
++* Smart Factory
--
--)))|(% style="width:66px" %)65%|(% style="width:90px" %)80%|(% style="width:48px" %)RH|(% style="width:203px" %)(1)
++== 1.5 Sleep mode and working mode ==
--(((
--(% style="color:red" %)**Remarks: (1)  a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
--(% style="color:red" %)**                       b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
--
--
--)))
--
--== 1.5 Effective measurement range Reference beam pattern ==
--
--
--(% style="color:blue" %)**1. The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
--
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852253176-749.png?rev=1.1||alt="1654852253176-749.png"]]
--
--
--(% style="color:blue" %)**2. The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
--
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS75%20-%20LoRaWAN%20Distance%20Detection%20Sensor%20User%20Manual/WebHome/1654852175653-550.png?rev=1.1||alt="1654852175653-550.png"]]
--
--
--== 1.6 Applications ==
--
--
--* Horizontal distance measurement
--* Liquid level measurement
--* Parking management system
--* Object proximity and presence detection
--* Intelligent trash can management system
--* Robot obstacle avoidance
--* Automatic control
--* Sewer
--* Bottom water level monitoring
--
--
--== 1.7 Sleep mode and working mode ==
--
--
  (% 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.
  (% 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.
--== 1.8 Button & LEDs ==
++== 1.6 Button & LEDs ==
  [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
@@ -176,10 +176,10 @@
  )))
  |(% 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.
--== 1.10 BLE connection ==
++== 1.7 BLE connection ==
--DDS20-NB support BLE remote configure and firmware update.
++S31x-NB support BLE remote configure and firmware update.
  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:
@@ -191,19 +191,21 @@
  If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
--== 1.11 Pin Definitions & Switch ==
++== 1.8 Pin Definitions & Switch ==
++S31x-NB use the mother board from S31-NB which as below.
++
  [[image:image-20230819104805-5.png]]
--=== 1.11.1 Jumper JP2 ===
++=== 1.8.1 Jumper JP2 ===
  Power on Device when put this jumper.
--=== 1.11.2 BOOT MODE / SW1 ===
++=== 1.8.2 BOOT MODE / SW1 ===
  **1)** (% style="color:blue" %)**ISP**(%%): upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run.
@@ -211,48 +211,61 @@
  **2)** (% style="color:blue" %)**Flash**(%%): work mode, device starts to work and send out console output for further debug
--=== 1.11.3 Reset Button ===
++=== 1.8.3 Reset Button ===
  Press to reboot the device.
--(% style="display:none" %)
++== 1.9 Hardware Variant ==
--== 1.12 Mechanical ==
++(% border="1" cellspacing="5" style="width:410px" %)
++|=(% style="width: 102px;background-color:#4F81BD;color:white" %)Model|=(% style="width: 126px; background-color:#4F81BD;color:white" %)Photo|=(% style="width: 179px;background-color:#4F81BD;color:white" %)Probe Info
++|(% style="width:102px" %)(((
++S31-NB
++)))|(% style="width:126px" %)(((
++(% style="text-align:center" %)
++[[image:image-20230819110632-6.png||height="130" width="104"]]
++)))|(% style="width:179px" %)(((
++1 x SHT31 Probe
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143884058-338.png?rev=1.1||alt="1675143884058-338.png"]]
++Cable Length : 3 meters
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143899218-599.png?rev=1.1||alt="1675143899218-599.png"]]
++
++)))
++|(% style="width:102px" %)(((
++S31B-NB
++)))|(% style="width:126px" %)(((
++(% style="text-align:center" %)
++[[image:image-20230819110702-7.png||height="164" width="90"]]
++)))|(% style="width:179px" %)(((
++1 x SHT31 Probe
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143909447-639.png?rev=1.1||alt="1675143909447-639.png"]]
++Installed in device.
++)))
++(% style="display:none" %)
--(% style="color:blue" %)**Probe Mechanical:**
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-1.png?rev=1.1||alt="image-20220615090910-1.png"]]
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDDS20%20-%20LoRaWAN%20Liquid%20Level%20Sensor%20User%20Manual/WebHome/image-20220615090910-2.png?rev=1.1||alt="image-20220615090910-2.png"]]
++= 2. Use S31-NB to communicate with IoT Server =
--
--= 2. Use DDS20-NB to communicate with IoT Server =
--
  == 2.1 Send data to IoT server via NB-IoT network ==
--The DDS20-NB is equipped with a NB-IoT module, the pre-loaded firmware in DDS20-NB will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module.  The NB-IoT network will forward this value to IoT server via the protocol defined by DDS20-NB.
++The S31-NB is equipped with a NB-IoT module, the pre-loaded firmware in S31-NB will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module.  The NB-IoT network will forward this value to IoT server via the protocol defined by S31-NB.
  Below shows the network structure:
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS45-NB_NB-IoT_Distance_Detection_Sensor_User_Manual/WebHome/image-20230912102813-2.png?width=923&height=320&rev=1.1||alt="image-20230912102813-2.png"]]
++[[image:1692415924540-357.png]]
--There are two version: (% style="color:blue" %)**-GE**(%%) and (% style="color:blue" %)**-1D**(%%) version of DDS45-NB.
++There are two version: (% style="color:blue" %)**-GE**(%%) and (% style="color:blue" %)**-1D**(%%) version of S31-NB.
--(% style="color:blue" %)**GE Version**(%%): This version doesn't include SIM card or point to any IoT server. User needs to use AT Commands to configure below two steps to set DDS20-NB send data to IoT server.
++(% style="color:blue" %)**GE Version**(%%): This version doesn't include SIM card or point to any IoT server. User needs to use AT Commands to configure below two steps to set S31-NB send data to IoT server.
  * Install NB-IoT SIM card and configure APN. See instruction of [[Attach Network>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.AttachNetwork]].
@@ -282,13 +282,13 @@
  [[image:image-20230819113244-11.png||height="141" width="367"]]
  )))|(% style="width:170px" %)
--(% style="color:blue" %)**1D Version**(%%): This version has 1NCE SIM card pre-installed and configure to send value to DataCake. User Just need to select the sensor type in DataCake and Activate DDS20-NB and user will be able to see data in DataCake. See here for [[DataCake Config Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.4Datacake]].
++(% style="color:blue" %)**1D Version**(%%): This version has 1NCE SIM card pre-installed and configure to send value to DataCake. User Just need to select the sensor type in DataCake and Activate S31-NB and user will be able to see data in DataCake. See here for [[DataCake Config Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.4Datacake]].
  == 2.2 Payload Types ==
--To meet different server requirement, DDS20-NB supports different payload type.
++To meet different server requirement, S31-NB supports different payload type.
  **Includes:**
@@ -314,7 +314,7 @@
  This is the General Json Format. As below:
--(% style="color:#4472c4" %)**{"IMEI":866207053462762,"temperature":29.2,"humidity":54.2,"battery":3.27,"signal":24,"Model":DDS20-NB, "1":{28.2,48.3,2023/08/10 08:00:37},"2":{28.1,49.1,2023/08/10 07:57:37},"3":{28.1,48.5,2023/08/10 07:54:37},"4":{28.2,48.6,2023/08/10 07:51:37},"5":{28.1,48.9,2023/08/10 07:48:37},"6":{28.2,48.8,2023/08/10 07:45:37},"7":{28.2,48.8,2023/08/10 07:42:37},"8":{28.0,48.8,2023/08/10 07:39:37}}**
++(% style="color:#4472c4" %)**{"IMEI":866207053462762,"temperature":29.2,"humidity":54.2,"battery":3.27,"signal":24,"Model":S31x-NB, "1":{28.2,48.3,2023/08/10 08:00:37},"2":{28.1,49.1,2023/08/10 07:57:37},"3":{28.1,48.5,2023/08/10 07:54:37},"4":{28.2,48.6,2023/08/10 07:51:37},"5":{28.1,48.9,2023/08/10 07:48:37},"6":{28.2,48.8,2023/08/10 07:45:37},"7":{28.2,48.8,2023/08/10 07:42:37},"8":{28.0,48.8,2023/08/10 07:39:37}}**
  (% style="color:red" %)**Notice, from above payload:**
@@ -337,7 +337,7 @@
  These bytes include the hardware and software version.
--(% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x00 for DDS20-NB
++(% style="color:#037691" %)**Higher byte:**(%%) Specify Sensor Model: 0x00 for S31B-NB & S31-NB
  (% style="color:#037691" %)**Lower byte:**(%%) Specify the software version: 0x64=100, means firmware version 100
@@ -364,6 +364,20 @@
  **99**      Not known or not detectable
++(% style="color:blue" %)**Temperature: **
++
++If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
++
++If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
++
++(FF3F & 8000: Judge whether the highest bit is 1, when the highest bit is 1, it is negative)
++
++
++(% style="color:blue" %)**Humidity:   **
++
++Read:0295(H)=661(D)    Value:  661 / 10=66.1, So 66.1%
++
++
  (% style="color:blue" %)**TimeStamp:   **
  Unit TimeStamp Example: 64d49439(H) = 1691653177(D)
@@ -391,123 +391,60 @@
  (% style="color:#4472c4" %)**field1=27.9&field2=49.9&field3=3.23&field4=28**
--== 2.3  Uplink Payload ==
++== 2.3 Test Uplink and Change Update Interval ==
--(((
--DDS20-NB will uplink payload via LoRaWAN with below payload format:
--)))
++By default, Sensor will send uplinks (% style="color:blue" %)**every 2 hours**(%%) & AT+NOUD=8
--(((
--Uplink payload includes in total 8 bytes.
--)))
++User can use below commands to change the (% style="color:blue" %)**uplink interval**.
--(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
--|=(% style="width: 95px; background-color:#4F81BD;color:white" %)Size(bytes)|=(% style="width: 61px; background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)1|=(% style="background-color:#4F81BD;color:white" %)2|=(% style="background-color:#4F81BD;color:white" %)1
--|(% style="width:95px" %)Value|(% style="width:61px" %)[[BAT>>||anchor="H2.3.1A0BatteryInfo"]]|(((
--[[Distance>>||anchor="H2.3.2A0Distance"]]
--(unit: mm)
--)))|[[Digital Interrupt (Optional)>>||anchor="H2.3.3A0InterruptPin"]]|(((
--[[Temperature (Optional)>>||anchor="H2.3.4A0DS18B20Temperaturesensor"]]
--)))|[[Sensor Flag>>||anchor="H2.3.5A0SensorFlag"]]
++(% style="color:#037691" %)**AT+TDC=600 ** (%%)      ~/~/ Set Update Interval to 600s
--[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/DDS20-LB_LoRaWAN_Ultrasonic_Liquid_Level_Sensor_User_Manual/WebHome/%E5%BE%AE%E4%BF%A1%E6%88%AA%E5%9B%BE_20230702135733.png?width=964&height=215&rev=1.1||alt="微信截图_20230702135733.png"]]
++User can also push the button for more than 1 seconds to activate an uplink.
--=== 2.3.1  Battery Info ===
++== 2.4 Multi-Samplings and One uplink ==
--Check the battery voltage for DDS20-NB.
++To save battery life, S31-NB will sample temperature & humidity data every 15 minutes and send one uplink every 2 hours. So each uplink it will include 8 stored data + 1 real-time data. They are defined by:
--Ex1: 0x0B45 = 2885mV
++* (% style="color:#037691" %)**AT+TR=900**   (%%)     ~/~/ The unit is seconds, and the default is to record data once every 900 seconds (15 minutes, the minimum can be set to 180 seconds)
--Ex2: 0x0B49 = 2889mV
++* (% style="color:#037691" %)**AT+NOUD=8**     (%%)~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
++The diagram below explains the relationship between TR, NOUD, and TDC more clearly:
--=== 2.3.2  Distance ===
++[[image:1692424376354-959.png]]
--(((
--Get the distance. Flat object range 20mm - 2000mm.
--)))
++== 2.5 Humidity and Temperature alarm function ==
--(((
--For example, if the data you get from the register is **0x06 0x05**, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** **
--(% style="color:blue" %)**0605(H) = 1541 (D) = 1541 mm.**
--)))
++On each sampling define by AT+TR ( default 900s or 15 minutes), when the value exceed the range, it will trigger an Alarm and immediately sends a uplink.
--* If the sensor value is 0x0000, it means system doesn't detect ultrasonic sensor.
--* If the sensor value lower than 0x0014 (20mm), the sensor value will be invalid.
++(% style="color:blue" %)**AT Commands:**
--=== 2.3.3  Interrupt Pin ===
++(% style="color:#037691" %)**AT+ SHHUM=min,max**
++Example: AT+ SHHUM=50,80     ~/~/ Alarm when humidity lower than 50 or higher than 80.
--This data field shows if this packet is generated by interrupt or not.
--**Example:**
++(% style="color:#037691" %)**AT+ SHTEMP=min,max**
--0x00: Normal uplink packet.
++Example: AT+ SHTEMP=20,30   ~/~/ Alarm when temperature lower than 20 or higher than 30
--0x01: Interrupt Uplink Packet.
++(% style="color:red" %)**Notice:**
--=== 2.3.4  DS18B20 Temperature sensor ===
++* To disable Alarm, user can set min and max to same value , such as (% style="color:#037691" %)**AT+SHTEMP=0,0.**
++* If user only want to send only min or max, user can set the alarm to a value that device won’t reach. For example: (% style="color:#037691" %)**AT+SHTEMP=-80,0.**
--This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
--
--**Example**:
--
--If payload is: 0105H:  (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
--
--If payload is: FF3FH :  (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
--
--
--=== 2.3.5  Sensor Flag ===
--
--
--(((
--0x01: Detect Ultrasonic Sensor
--)))
--
--(((
--0x00: No Ultrasonic Sensor
--
--
--)))
--
--== 2.4 Test Uplink and Change Update Interval ==
--
--
--By default, Sensor will send uplinks (% style="color:blue" %)**every 2 hours**(%%) & AT+NOUD=8
--
--User can use below commands to change the (% style="color:blue" %)**uplink interval**.
--
--(% style="color:#037691" %)**AT+TDC=600 ** (%%)      ~/~/ Set Update Interval to 600s
--
--User can also push the button for more than 1 seconds to activate an uplink.
--
--
--== 2.5 Multi-Samplings and One uplink ==
--
--
--To save battery life, DDS20-NB will sample temperature & humidity data every 15 minutes and send one uplink every 2 hours. So each uplink it will include 8 stored data + 1 real-time data. They are defined by:
--
--* (% style="color:#037691" %)**AT+TR=900**   (%%)     ~/~/ The unit is seconds, and the default is to record data once every 900 seconds (15 minutes, the minimum can be set to 180 seconds)
--
--* (% style="color:#037691" %)**AT+NOUD=8**     (%%)~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
--
--The diagram below explains the relationship between TR, NOUD, and TDC more clearly:
--
--[[image:1692424376354-959.png]]
--
--
  == 2.6 Trggier an uplink by external interrupt ==
--DDS20-NB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets.
++S31-NB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets.
  (% style="color:blue" %)**AT command:**
@@ -521,12 +521,12 @@
  * (% style="color:#037691" %)**AT+INTMOD=3  **(%%)  ~/~/ Trigger by rising edge
--= 3. Configure DDS20-NB =
++= 3. Configure S31x-NB =
  == 3.1 Configure Methods ==
--DDS20-NB supports below configure method:
++S31x-NB supports below configure method:
  * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
@@ -615,7 +615,7 @@
  = 4. Battery & Power Consumption =
--DDS20-NB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
++S31x-NB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
  [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
@@ -629,7 +629,7 @@
  * Fix bugs.
--Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/nyzeu0lf0amcaek/AAC6UZrqyTcAyJgXOH7l9F9Ka?dl=0]]**
++Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/fhb3uyl4gt6clru/AAAiZVTFcxrfE1JOOyfcgO9ha?dl=0]]**
  Methods to Update Firmware:
@@ -647,24 +647,11 @@
  [[See BC660K-GL AT Command set>>url:https://www.dropbox.com/sh/5f6ssda5fum8rvs/AABT68l8ZzWOvZ5eg2qwOoFda?dl=0]]
--= 7.  Trouble Shooting =
++= 7. Order Info =
--== 7.1  Why i always see 0x0000 or 0 for the distance value? ==
++Part Number: (% style="color:blue" %)**S31-NB-XX  / S31B-NB-XX**
--(((
--DDS20-NB has a strict [[**installation requirement**>>||anchor="H1.5A0InstallDDS20-NB"]]. Please make sure the installation method exactly follows up with the installation requirement. Otherwise, the reading might be always 0x00.
--
--If you have followed the instruction requirement exactly but still see the 0x00 reading issue, please. please double-check the decoder, you can check the raw payload to verify.
--
--
--)))
--
--= 8. Order Info =
--
--
--Part Number: (% style="color:blue" %)**DDS20-NB-XX**
--
  (% style="color:red" %)**XX**(%%):
  * (% style="color:#037691" %)**GE**(%%): General version ( Exclude SIM card)
@@ -674,12 +674,12 @@
  (% style="color:#037691" %)**1NCE SIM Card NB-IoT network coverage**(%%): Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Finland, Germany, Great Britain, Greece, Hungary, Ireland, Italy, Latvia, Malta, Netherlands, Norway, Puerto Rico, Russia, Slovak , Republic, Slovenia, Spain, Sweden, Switzerland, Taiwan, USA, US Virgin Islands
--= 9. Packing Info =
++= 8. Packing Info =
  (% style="color:#037691" %)**Package Includes**:
--* DDS20-NB NB-IoT Ultrasonic liquid level sensor x 1
++* S31-NB or S31-NB NB-IoT Sensor Node x 1
  * External antenna x 1
@@ -693,7 +693,7 @@
  * Weight / pcs : 180g
--= 10. Support =
++= 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.

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