Table of Contents :

• 1. Introduction
  • 1.1 What is SE0X-NB/NS NB-IoT Soil Moisture & EC Sensor
  • 1.2 ​Features
  • 1.4 Applications
  • 1.5 Sleep mode and working mode
  • 1.6 Button & LEDs
  • 1.7 BLE connection
  • 1.8 Pin Definitions
    • 1.8.1 Jumper JP2
    • 1.8.2 BOOT MODE / SW1
    • 1.8.3 Reset Button
    • 1.8.4 SIM Card Direction
  • 1.9 Mechanical
    • 1.9.1 for NB version
    • 1.9.2 for NS version
  • 1.10 Installation in Soil
• 2. Use SE0X-NB/NS to communicate with IoT Server
  • 2.1 Send data to IoT server via NB-IoT network
  • 2.2 ​Payload Types
    • 2.2.1 General Json Format(Type=5)
    • 2.2.2 HEX format Payload(Type=0)
    • 2.2.3 ThingsBoard Payload(Type=3)
    • 2.2.4 ThingSpeak Payload(Type=1)
• 3. Configure S31x-CB
  • 3.1 Configure Methods
  • ​​​3.2  Serial Access Password
  • 3.3 AT Commands Set
  • 3.4 Test Uplink and Change Update Interval
  • 3.5 Set the receiving time
  • 3.6 Reset
  • 3.7 +5V
  • 3.8 Trigger an uplink by external interrupt
  • 3.9 Set the QoS level
  • 3.10 Clock logging
  • 3.11 Set the TLS mode
  • 3.12 Set GNSS open time
  • 3.13 Turn on/off GPS
  • 3.14 Set GPS positioning interval
  • 3.15 Set the search network time
  • 3.16 Humidity and Temperature alarm function
  • 3.17 Set the IPv4 or IPv6
  • 3.18 Configure Network Category to be Searched for under LTE RAT.
  • 3.19 Factory data reset
  • 3.20 Set CoAP option
  • 3.21 Power on / power off BG95 module
  • 3.22 Example Query saved historical records
  • 3.23 Uplink log query
  • 3.24 Print last few data entries
  • 3.25 Print data entries base on page
  • 3.26 Clear Flash Record
  • 3.27 Working mode selection(Since firmware V1.0.4)
  • 3.28 Set Count value(Since firmware V1.0.4)
  • 3.29 Set the downlink debugging mode
• 4. Battery & Power Consumption
• 5. Firmware update
• 6. FAQ
  • 6.1 AT Commands input doesn't work
  • 6.2 Can I calibrate SE0X-NB/NS to different soil types?
  • 6.3 ​Why I can't join TTN in US915 / AU915 bands?
• 7. Order Info
• 8. ​Packing Info
• 9. Support

1. Introduction

1.1 What is SE0X-NB/NS NB-IoT Soil Moisture & EC Sensor

The Dragino SE0X-NB/NS is a NB-IoT Soil Moisture & EC Sensor for Agri-IoT with up to 4 sensor probes. It is designed to measure the soil moisture of saline-alkali soil and loamy soil. The soil sensor uses FDR method to calculate the soil moisture with the compensation from soil temperature and conductivity. It also has been calibrated in factory for Mineral soil type.

It detects Soil Moisture, Soil Temperature and Soil Conductivity, and then upload to IoT server via NB-IoT network*.

SE0X-NB/NS supports different uplink methods include TCP, MQTT, UDP, MQTTs or CoAP for different application requirement. and Support Uplinks to various IoT Servers.

SE0X-NB/NS supports BLE configure and wireless OTA update which make user easy to use.

SE0X-NB/NS is powered by 8500mAh Li-SOCI2 battery or solar powered + Li-ion battery, it is designed for long-term use up to several years.

1.2 ​Features

• 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
• Up to 4 external sensor probes, probe length: 2.5 meters
• Monitor Soil Moisture
• Monitor Soil Temperature
• Monitor Soil Conductivity
• IP66 Waterproof Enclosure
• Multiply Sampling and one uplink
• Support Bluetooth v5.1 remote configure and update firmware
• Uplink on periodically
• AT Commands to change parameters
• Downlink to change configure
• 8500mAh Li/SOCl2 Battery (SE0X-NB)
• Solar panel + 3000mAh Li-ion battery (SE0X-NS)
• Nano SIM card slot for NB-IoT SIM

Common DC Characteristics:

• Supply Voltage: Built-in Battery , 2.6v ~ 3.6v
• Operating Temperature: -40 ~ 85°C

Soil Moisture:

• Range: 0-100.00 V/V %
• Resolution: 0.01 V/V %
• Accuracy: ±3% (0-53%)V/V %, ±5% (>53%) V/V %
• Measure Method: FDR , with temperature &EC compensate 

Soil Temperature

• Range: -40.00℃～85.00℃
• Resolution: 0.01℃
• Accuracy: -10℃～50℃:<0.3℃ ,All other: <0.6℃
• Measure Method: RTD, and calibrate

Soil Conductivity

• Range: 0-20000 uS/cm(25℃)(0-20.0EC)
• Resolution: 1 uS/cm
• Accuracy: 2%FS
• Measure Method: Conductivity , with temperature compensate

NB-IoT Spec:

NB-IoT Module: BC660K-GL

Support Bands:

• B1 @H-FDD: 2100MHz
• B2 @H-FDD: 1900MHz
• B3 @H-FDD: 1800MHz
• B4 @H-FDD: 2100MHz
• B5 @H-FDD: 860MHz
• B8 @H-FDD: 900MHz
• B12 @H-FDD: 720MHz
• B13 @H-FDD: 740MHz
• B17 @H-FDD: 730MHz
• B18 @H-FDD: 870MHz
• B19 @H-FDD: 870MHz
• B20 @H-FDD: 790MHz
• B25 @H-FDD: 1900MHz
• B28 @H-FDD: 750MHz
• B66 @H-FDD: 2000MHz
• B70 @H-FDD: 2000MHz
• B85 @H-FDD: 700MHz

Battery:

• Li/SOCI2 un-chargeable battery
• Capacity: 8500mAh
• Self-Discharge: <1% / Year @ 25°C
• Max continuously current: 130mA
• Max boost current: 2A, 1 second

Power Consumption

• Sleep Mode: 5uA @ 3.3v
• LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm

1.4 Applications

• Smart Agriculture

1.5 Sleep mode and working mode

Deep Sleep Mode: Sensor doesn't have any NB-IoT activate. This mode is used for storage and shipping to save battery life.

Working Mode: In this mode, Sensor will work as NB-IoT Sensor to Join NB-IoT 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.

1.6 Button & LEDs

Note: When the device is executing a program, the buttons may become invalid. It is best to press the buttons after the device has completed the program execution.

1.7 BLE connection

SE0X-NB/NS 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:

• Press button to send an uplink
• Press button to active device.
• Device Power on or reset.

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

1.8 Pin Definitions

1.8.1 Jumper JP2

Power on Device when put this jumper.

1.8.2 BOOT MODE / SW1

1) 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.

2) Flash: work mode, device starts to work and send out console output for further debug

1.8.3 Reset Button

Press to reboot the device.

1.8.4 SIM Card Direction

See this link. How to insert SIM Card.

1.9 Mechanical

1.9.1 for NB version

Main Device Dimension:

Probe Dimension:

1.9.2 for NS version

1.10 Installation in Soil

Measurement the soil surface

 ​

Choose the proper measuring position. Avoid the probe to touch rocks or hard things. Split the surface soil according to the measured deep. Keep the measured as original density. Vertical insert the probe into the soil to be measured. Make sure not shake when inserting.

Dig a hole with diameter > 20CM.

Horizontal insert the probe to the soil and fill the hole for long term measurement. 

2. Use SE0X-NB/NS to communicate with IoT Server

2.1 Send data to IoT server via NB-IoT network

The SE0X-NB/NS is equipped with a NB-IoT module, the pre-loaded firmware in SE0X-NB/NS 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 SE0X-NB/NS.

Below shows the network structure:

There are two version: -GE and -1T version of SE0X-NB/NS.

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 SE0X-NB/NS send data to IoT server.

• Install NB-IoT SIM card and configure APN. See instruction of Attach Network.

• Set up sensor to point to IoT Server. See instruction of Configure to Connect Different Servers.  

Below shows result of different server as a glance.

Servers	Dash Board	Comments
Node-Red
DataCake
Tago.IO
General UDP	Raw Payload. Need Developer to design Dash Board
General MQTT	Raw Payload. Need Developer to design Dash Board
ThingSpeak
ThingsBoard

1T Version: This version has 1NCE SIM card pre-installed and configure to send value to ThingsEye. User Just need to select the sensor type in ThingsEyeand Activate SE0X-NB/NS and user will be able to see data in ThingsEye. See here for ThingsEye Config Instruction.

2.2 ​Payload Types

To meet different server requirement, SE0X-NB/NS supports different payload type.

Includes:

• General JSON format payload. (Type=5)

• HEX format Payload. (Type=0)

• ThingSpeak Format. (Type=1)

• ThingsBoard Format. (Type=3)

User can specify the payload type when choose the connection protocol. Example:

AT+PRO=2,0            // Use UDP Connection & hex Payload

AT+PRO=2,5            // Use UDP Connection & Json Payload

AT+PRO=3,5            // Use MQTT Connection & Json Payload

2.2.1 General Json Format(Type=5)

This is the General Json Format. As below:

{"IMEI":"863663062765285","IMSI":"460086859301435","Model":"SE0X-NB","interrupt":0,"interrupt_level":0,"battery":3.27,"signal":2,"sensor_flag":"1111","water_soil1":38.11,"temp_soil1":17.68,"conduct_soil1":8234,"water_soil2":32.01,"temp_soil2":17.69,"conduct_soil2":4323,"water_soil3":30.72,"temp_soil3":17.91,"conduct_soil3":5058,"water_soil4":32.07,"temp_soil4":17.80,"conduct_soil4":5116,"time":"2025/01/18 02:38:06"}

Notice, from above payload:

• Temperature, Humidity, Soil conductivity, Temperature 2,  Humidity 2, Soil conductivity 2, Interrupt, Interrupt_level, Battery, Signal & time are the value at uplink time.

• Json entry 1 ~ 8 are the last 1 ~ 8 sampling data as specify by AT+CLOCKLOG=1,65535,15,8 Command. Each entry includes (from left to right): Soil Temperature, Soil Moisture, Soil Conductivity(EC), Soil Temperature 2, Soil Moisture 2, Soil Conductivity 2(EC) & Sampling time. 

2.2.2 HEX format Payload(Type=0)

This is the HEX Format. As below:

f863663062765285f46008685930143536640cd1170000000f0fa006e817a30cac06f512410c9407031baa0cdf06ff14d7678b1740

If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NB sensor uplink data.

Version:

These bytes include the hardware and software version.

Higher byte: Specify Sensor Model: 0x36 for SE0X-NB/NS

Lower byte: Specify the software version: 0x82=130, means firmware version 1.3.0

BAT (Battery Info):

Ex1: 0x0CD1 = 3281mV

Signal Strength:

NB-IoT Network signal Strength.

Ex1: 0x16 = 22

0        -113dBm or less

1        -111dBm

2...30 -109dBm... -53dBm

31      -51dBm or greater

99      Not known or not detectable

Soil Moisture 

Soil Temperature 

Soil Conductivity (EC) 

TimeStamp:   

Unit TimeStamp Example: 665eb834(H) = 1717483572(D)

Put the decimal value into this link(https://www.epochconverter.com)) to get the time.

2.2.3 ThingsBoard Payload(Type=3)

Type3 payload special design for ThingsBoard, it will also configure other default server to ThingsBoard.

 {
    "topic": "2276492",
    "payload": {
        "IMEI": "863663062798930",
        "Model": "SE02-NB",
        "tem": 26.0,
        "hum": 47.6,
        "ec": 8806,
        "tem2": 26.0,
        "hum2": 55.0,
        "ec2": 8973,
        "interrupt": 0,
        "interrupt_level": 0,
        "battery": 3.29,
        "signal": 22,
        "1": [26.0, 47.6, 8915, 26.0, 55.0, 8918, "2024/06/04 07:08:13"],
        "2": [26.0, 47.6, 8933, 26.0, 55.0, 9028, "2024/06/04 07:06:13"],
        "3": [26.0, 47.6, 8907, 26.0, 55.1, 8907, "2024/06/04 07:04:13"],
        "4": [26.0, 47.6, 8845, 26.0, 55.0, 9044, "2024/06/04 07:02:13"],
        "5": [26.0, 47.6, 8917, 26.0, 55.1, 8985, "2024/06/04 07:00:13"],
        "6": [26.0, 47.5, 8883, 26.0, 55.0, 9041, "2024/06/04 06:58:13"],
        "7": [26.0, 47.6, 8965, 26.0, 55.0, 8952, "2024/06/04 06:56:13"],
        "8": [26.0, 47.6, 8844, 26.0, 55.0, 8994, "2024/06/04 06:54:13"]
    }
}

2.2.4 ThingSpeak Payload(Type=1)

This payload meets ThingSpeak platform requirement. It includes six fields. Form 1~8 are:

Temperature, Humidity, Conduct soil, Temperature 2, Humidity 2, Conduct soil 2, Battery & Signal. This payload type only valid for ThingsSpeak Platform.

As below:

field1=Temperature value&field2=Humidity value&field3=Conduct soil value&field4=Temperature 2 value&field5=Humidity 2 value&field6=Conduct soil 2 value&field7=Battery value&field8=Signal value

3. Configure S31x-CB

3.1 Configure Methods

S31x-CB supports below configure method:

• AT Command via Bluetooth Connection (Recommended): BLE Configure Instruction.

• AT Command via UART Connection : See UART Connection.

​​​3.2  Serial Access Password

After the Bluetooth or UART connection is successful, use the Serial Access Password to enter the AT command window.

The label on the box of the node will print the initial password: AT+PIN=xxxxxx, and directly use the six-digit password to access the AT instruction window.

If you need to change the password, use AT+PWORD=xxxxxx (6 characters), -CB nodes only support lowercase letters.

Note: After entering the command, you need to add a line break, and you can also set automatic line breaks in the Bluetooth tool or UART connection tool.

3.3 AT Commands Set

AT+<CMD>?                    : Help on <CMD>

AT+<CMD>                      : Run <CMD>

AT+<CMD>=<value>      : Set the value

AT+<CMD>=?                  : Get the value

General Commands       

AT+MODEL : Get module information

ATZ : Trig a reset of the MCU

AT+CFGMOD : Working mode selection

AT+DEUI : Get or set the Device ID

AT+CFG : Print all settings

AT+SERVADDR: Get or Set the Server address

AT+TDC : Get or set the application data transmission interval in s

AT+INTMOD : Get or Set the trigger interrupt mode (0:input,1:falling or rising,2:falling,3:rising)

AT+APN : Get or set the APN

AT+5VT : Get or Set extend the time of 5V power

AT+PRO : Get or Set usage agreement (1:COAP,2:UDP,3:MQTT,4:TCP)

AT+RXDL : Get or Set the receiving time

AT+EXT : Get or Set Count value

AT+SHTEMP:Get or Set alarm of shtemp

AT+SHHUM:Get or Set alarm of shthum

AT+GETSENSORVALUE : Returns the current sensor measurement

AT+DNSCFG : Get or Set DNS Server

AT+CSQTIME : Get or Set the time to join the network

AT+GDNS : Get or Set the DNS

AT+SLEEP : Get or Set the sleep mode

AT+IPTYPE : Set the IPv4 or IPv6

AT+QSW : Power on and power off BG95 module

AT+CLOCKLOG: Get or set SHT record time

AT+QBAND: Get or set Frequency Band

AT+IOTMOD: Configure Network Category to be Searched for under LTE RAT

AT+DOWNTE: Get or set the conversion between the standard version and 1T version downlinks

MQTT Management

AT+CLIENT : Get or Set the MQTT clientID

AT+UNAME : Get or Set the MQTT Username

AT+PWD : Get or Set the MQTT password

AT+PUBTOPIC: Get or set MQTT publishing topic

AT+SUBTOPIC: Get or set MQTT subscription topic

AT+MQOS : Set the QoS level of MQTT

AT+TLSMOD : Get or Set the TLS mode

COAP Management

AT+URI1: Get or set CoAP option 1

AT+URI2: Get or set CoAP option 2

AT+URI3: Get or set CoAP option 3

AT+URI4: Get or set CoAP option 4

AT+URI5: Get or set CoAP option 5

AT+URI6: Get or set CoAP option 6

AT+URI7: Get or set CoAP option 7

AT+URI8: Get or set CoAP option 8

GPS

AT+GNSST : Extend the time to turn on GNSS

AT+GPS : Turn off and on GPS

AT+GTDC : Get or set GPS positioning interval in units of h

Information           

AT+FDR1 : Reset parameters to factory default values except for passwords

AT+FDR : Reset Parameters to Factory Default

AT+PWORD : Get or set the System password

AT+LDATA : Get the last upload data

AT+CDP : Read or Clear cached data

AT+PDTA: Print the sector data from start page to stop page

AT+PLDTA: Print the last few sets of data

AT+CLRDTA: Clear the storage, record position back to 1st

AT+GETLOG : Print serial port logs

3.4 Test Uplink and Change Update Interval

By default, Sensor will send uplinks every 2 hours.

User can use below commands to change the uplink interval.

AT Command: AT+TDC       

Example: AT+TDC=7200   // Set Update Interval to 7200 seconds

Downlink Commands: 0x01

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

Example:     12 hours= 43200 seconds     43200(D)=0xA8C0(H)

                    Downlink Payload: 01 00 A8 C0          // AT+TDC=43200, Set Update Interval to 12 hours.

Note: User can also push the button for more than 1 second to activate an uplink.

3.5 Set the receiving time

Feature: Extend the receiving time

AT Command: AT+RXDL

Example: AT+RXDL=1000   // Set the receiving time delay to 1000ms

Downlink Commands: 0x03

Format: Command Code (0x03) followed by 3 bytes.

Example:  Downlink Payload: 03 00 03 E8     // AT+RXDL=1000

3.6 Reset

Feature: Trig a reset of the MCU.

AT Command: ATZ

Downlink Commands: 0x04FF

3.7 +5V

Feature: Set extend the time of 5V power.

AT Command: AT+5VT

Example: AT+5VT=2000    // Set extend the time of 5V power to 2000 ms

Downlink Commands: 0x05

Format: Command Code (0x05) followed by 3 bytes.

Example:  Downlink Payload: 05 00 07 D0    // AT+5VT=2000

3.8 Trigger an uplink by external interrupt

S31x-CB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets.

AT command:

• AT+INTMOD         // Set the trigger interrupt mode

• AT+INTMOD=0    // Disable Interrupt

• AT+INTMOD=1    // Trigger by rising and falling edge

• AT+INTMOD=2    // Trigger by falling edge

• AT+INTMOD=3    // Trigger by rising edge

Downlink Commands: 0x06

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

Example1:  Downlink Payload: 06 00 00 01    // AT+INTMOD=1

Example2:  Downlink Payload: 06 00 00 03    // AT+INTMOD=3

3.9 Set the QoS level

This command is used to set the QoS level of MQTT.

AT command:

• AT+MQOS=xx   // 0~2

Downlink command: 0x07

Format: Command Code (0x07) followed by 1 byte.

Ex1: Downlink payload: 0x0700   // AT+MQOS=0

Ex2: Downlink payload: 0x0701   // AT+MQOS=1

3.10 Clock logging

Sometimes when we deploy lots of end nodes in field. We want all sensors sample data at the same time, and upload these data together for analyze. In such case, we can use clock loging feature.

We can use this command to set the start time of data recording and the time interval to meet the requirements of the specific collection time of data.

AT command: AT+CLOCKLOG=a,b,c,d

a: 0: Disable Clock logging.   1: Enable Clock Logging

b: Specify First sampling start second: range (0 ~ 3599, 65535)         //  Note: If parameter b is set to 65535, the log period starts after the node accesses the network and sends packets.

c: Specify the sampling interval: range (0 ~ 255 minutes)

d: How many entries should be uplink on every TDC (max 32)

Note: To disable clock recording, set the following parameters: AT+CLOCKLOG=1,65535,0,0

Example:

AT+CLOCKLOG=1,65535,1,5

After the node sends the first packet, data is recorded to the memory at intervals of 1 minute. For each TDC uplink, the uplink load will include: battery information + the last 5 memory records (payload + timestamp).

Note: Users need to synchronize the server time before configuring this command. If the server time is not synchronized before this command is configured, the command takes effect only after the node is reset.

Downlink command: 0x08

Format: Command Code (0x08) followed by 5 bytes.

• Example 1: Downlink Payload: 08 01 FFFF 0F 08              // Set SHT record time: AT+CLOCKLOG=1,65535,15,8
• Example 2: Downlink Payload: 08 01 04B0 0F 08             // Set SHT record time: AT+CLOCKLOG=1,1200,15,8

Note: When entering the downlink payload, there must be no Spaces between bytes.

3.11 Set the TLS mode

Refer to this link (MQTT Connection to send data to Tago.io)to use the TLS mode.

AT Command: AT+TLSMOD

Example 1:  AT+TLSMOD=0,0   // Disable TLS Mode.

Example 2:  AT+TLSMOD=1,0   // No authentication

                     AT+TLSMOD=1,1   // Perform server authentication

                     AT+TLSMOD=1,2   // Perform server and client authentication if requested by the remote server

Downlink command: 0x09

Format: Command Code (0x09) followed by 2 bytes.

Example1:  Downlink Payload: 09 00 00    // AT+TLSMOD=0,0

Example2:  Downlink Payload: 09 01 02    // AT+TLSMOD=1,2

3.12 Set GNSS open time

Extend the time to turn on GNSS. The automatic GPS location time is extended when the node is activated.

AT Command: AT+GNSST

Example: AT+GNSST=30  // Set the GPS positioning time to 30 seconds

Downlink command: 0x10

Format: Command Code (0x10) followed by 2 bytes.

Example:  Downlink Payload: 10 00 1E    // AT+GNSST=30

3.13 Turn on/off GPS

AT Command: AT+GPS 

Ex1:  AT+GPS=0    // Turn off GPS

Ex2:  AT+GPS=1    // Turn on GPS

Downlink command: 0x11

Format: Command Code (0x11) followed by 1 byte.

Example:  Downlink Payload: 11 01   // AT+GPS=1

3.14 Set GPS positioning interval

Feature: Set GPS positioning interval (unit: hour). 

When GPS is enabled, the node automatically locates and uplinks each time it passes GTDC time after activation.

AT Command: AT+GTDC

Example: AT+GTDC=24    // Set the GPS positioning interval to 24h.

Downlink command: 0x12

Format: Command Code (0x12) followed by 3 bytes.

Example: 24 hours:  24(D)=0x18(H)

               Downlink Payload: 12 00 00 18   // AT+GTDC=24

3.15 Set the search network time

Feature: Get or Set the time to join the network(unit: minutes).

AT Command: AT+CSQTIME

Example: AT+CSQTIME=10   // Set the search time to 10 minutes.

Downlink command: 0x13

Format: Command Code (0x13) followed by 1 byte.

Example:  Downlink Payload: 13 0A   // AT+CSQTIME=10

3.16 Humidity and Temperature alarm function

On each sampling define by AT+CLOCKLOG=1,65535,15,8 ( default 15 minutes), when the value exceed the range, it will trigger an Alarm and immediately sends a uplink. 

AT Command:

AT+ SHTEMP=min,max

SHTTEMP must be -40 to 125.

Example: AT+ SHTEMP=20,30   // Alarm when temperature lower than 20 or higher than 30

AT+ SHHUM=min,max

Example: AT+ SHHUM=50,80     // Alarm when humidity lower than 50 or higher than 80.

Downlink Commands: 0x0A

Format: Command Code (0x0A) followed by 4 bytes.

The first and second bytes following the function code are the minimum and maximum value of SHTEMP, and the third and fourth bytes are the minimum and maximum value of SHHUM.

• Example 1: Downlink Payload: 0A 14 1E 32 50             // AT+ SHTEMP=20,30 & AT+ SHHUM=50,80
• Example 2: Downlink Payload: 0A 00 00 00 00            // disable temperature and humidity alarm.

For negative payload temperature, calculate it as follows: 65536+ temperature = FFaa, the value is aa.

• Example:  -40℃： 65536+(-40)=65496(D)=FFD8(H), Therefore, select a numerical representation of D8 as -40 ℃ for the downlink payload.

Notice:

• To disable Alarm, user can set min and max to same value , such as AT+SHTEMP=0,0 and AT+SHHUM=50,50
• 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: AT+SHTEMP=-40,0(Alarm above 0 degrees Celsius).

3.17 Set the IPv4 or IPv6

This command is used to set IP version.

AT command:

• AT+IPTYPE=1      // IPv4
• AT+IPTYPE=2      // IPv6

3.18 Configure Network Category to be Searched for under LTE RAT.

AT command: AT+IOTMOD=xx

xx:       0: eMTC 

            1: NB-IoT 

            2: eMTC and NB-IoT 

3.19 Factory data reset

Two different restore factory Settings configurations.

AT command:

• AT+FDR       // Reset Parameters to Factory Default.
• AT+FDR1     // Reset parameters to factory default values except for passwords.

3.20 Set CoAP option

Feature: Set CoAP option, follow this link to set up the CoaP protocol.

AT command: AT+URI1~AT+URI8

AT+URI1=11,"i"         // "i/" indicates that the endpoint supports observation mode. In -CB products, fixed  setting AT+URI1=11,"i"

AT+URI2=11,"CoAP endpoint URl"   // 11 is a fixed parameter.

Example:  i/13a35fbe-9515-6e55-36e8-081fb6aacf86

AT+URI1=11,"i"

AT+URI2=11,"13a35fbe-9515-6e55-36e8-081fb6aacf86"

--> If multiple groups of CoAP endpoint urls:

AT+URI3=11,"i"

AT+URI4=11,"CoAP endpoint URl"

3.21 Power on / power off BG95 module

This command is used to power on and power off BG95 module.

• AT command: AT+QSW

The module is powered on after the command is sent for the first time, and powered off after the command is sent again.

3.22 Example Query saved historical records

• AT command: AT+CDP

This command can be used to search the saved history, recording up to 32 groups of data, each group of historical data contains a maximum of 100 bytes.

3.23 Uplink log query

• AT command: AT+GETLOG

This command can be used to query upstream logs of data packets.

3.24 Print last few data entries

Feature: Print the last few data entries

AT command: AT+PLDTA

Downlink Command: 

No downlink commands for feature

3.25 Print data entries base on page

Feature: Print the sector data from start page to stop page.

AT command: AT+PDTA

Downlink Command: 

No downlink commands for feature

3.26 Clear Flash Record

Feature: Clear flash storage for data log feature.

AT command: AT+CLRTDA

Downlink Command:  0x32

• Example: 0x32 00        //  Same as AT+CLRDTA

3.27 Working mode selection(Since firmware V1.0.4)

Feature: Set interrupt mode or count mode (PB15 pin).

AT command: AT+CFGMOD

Downlink Command:  0x02

• Downlink command: 02 01    // Equal to AT+CFGMOD=1
• Downlink command: 02 02    // Equal to AT+CFGMOD=2

3.28 Set Count value(Since firmware V1.0.4)

Feature: Set the count value of PB15.

AT command: AT+EXT

Downlink Command:  0x0B

Format: Command Code (0x0B) followed by 4 bytes.

• Downlink command: 0B 00 00 00 00    // Set the count value to 0
• Downlink command: 0B 00 00 00 64    // Set the count value to 100

3.29 Set the downlink debugging mode

Feature: Set the conversion between the standard version and 1T version downlinks.

AT command: AT+DOWNTE

Example:

• AT+DOWNTE=0,1     // Set to standard version downlink, and enable downlink debugging.
• AT+DOWNTE=1,1    // Set to 1T version downlink, and enable downlink debugging.

Downlink Command:  

No downlink commands for feature

4. Battery & Power Consumption

SE0X-NB use ER26500 + SPC1520 battery pack and SE0X-NS use 3000mAh Recharable Battery with Solar Panel.  See below link for detail information about the battery info and how to replace.

Battery Info & Power Consumption Analyze .

5. Firmware update

User can change device firmware to::

• Update with new features.

• Fix bugs. 

Firmware and changelog can be downloaded from : Firmware download link

Methods to Update Firmware:

• (Recommended way) OTA firmware update via BLE: Instruction.

• Update through UART TTL interface : Instruction.

6. FAQ

6.1 AT Commands input doesn't work

In the case if user can see the console output but can't type input to the device. Please check if you already include the ENTER while sending out the command. Some serial tool doesn't send ENTER while press the send key, user need to add ENTER in their string. 

6.2 Can I calibrate SE0X-NB/NS to different soil types?

SE0X-NB/NS can be used to measure EC/Moisture in different type of soil event concrete.

6.3 ​Why I can't join TTN in US915 / AU915 bands?

It is due to channel mapping. Please see the Eight Channel Mode section above for details.

7. Order Info

Part Number: SE0X-NB/NS-XX 

XX: 

• GE: General version ( Exclude SIM card)

• 1T: with 1NCE * 10 years 500MB SIM card and Pre-configure to ThingsEye server

8. ​Packing Info

Package Includes:

• SE0X-NB/NS NB-IoT Soil Moisture & EC Sensor Transmitter

• External antenna x 1

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.

• 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.