Table of Contents:

• 1.  Introduction
  • 1.1 ​ What is DMT01 Wireless Meat Thermometer
  • ​1.2  Features
  • 1.3  Specification
  • 1.4 ​ Applications
  • 1.5  Sleep mode and working mode
  • 1.6  Button & LEDs
  • 1.7  BLE connection
  • 1.8  Pin Definitions , Switch & SIM Direction
    • 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
  • 1.10  Hardware connection
    • 1.10.1 Pins of AC detect module
    • 1.10.2 Connection between AC detect module and POM01-NB motherboard
    • 1.10.3 Connection between AC detect module and AC power supply(90 ~230v)
• 2.  Use POM01-NB 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)
• 3. Configure POM01-NB
  • 3.1 Configure Methods
  • ​​​3.2  Serial Access Password
  • 3.3 AT Commands Set
• 4. Battery & Power Consumption
• 5. Firmware update
• 6.  FAQ
  • 6.1 How can I access the BC660K-GL AT Commands?
• 7.  Order Info
• 8. ​ Packing Info
• 9.  ​Support

1.  Introduction

1.1 ​ What is DMT01 Wireless Meat Thermometer

The DMT01 is a professional-grade wireless meat thermometer engineered for accurate, real-time temperature monitoring in commercial cooking environments. Ideal for restaurants, central kitchens, catering services, and food processing facilities, the DMT01 ensures consistent results across various cooking methods—including grilling, smoking, roasting, deep-frying, sous vide, baking, and more. Its precise monitoring helps improve cooking efficiency, ensure food safety, and meet HACCP compliance standards.

The system consists of two components:
 - Food-grade BLE High-Temperature Probe – A durable, high-heat resistant probe that measures internal food temperature during cooking.
 - Charging Base with BLE & LoRaWAN Forwarder – This base not only charges the probe but also acts as a communication bridge. It receives temperature data from the BLE probe and transmits it via the LoRaWAN long-range wireless protocol to your IoT platform or monitoring system.

With its dual wireless support (BLE for close-range accuracy and LoRaWAN for long-range data transmission), the DMT01 is ideal for both home cooking enthusiasts and commercial kitchen environments seeking smart, connected temperature monitoring.

​1.2  Features

• Wireless Meat Thermometer – Designed for accurate and reliable cooking temperature monitoring
• Food-Grade Probe – Safe for food contact and dishwasher-compatible for easy cleaning
• BLE 5.1 Broadcasting – Supports real-time local data transmission via Bluetooth Low Energy
• LoRaWAN Connectivity – Enables long-range, low-power data transmission to IoT platforms
• Smart Uplink Triggering – Supports periodic data reporting and real-time alerts on temperature thresholds

1.3  Specification

Common DC Characteristics:

• Supply Voltage: 90 ~230v
• Operating Temperature: -40 ~ 85°C

Food Probe Spec:

• Food temperature range: -20 ~120 °C, Accuracy: ±0.5°C
• Ambient temperature range: 0 ~300°C, Accuracy: ±3°C

Battery Duration: 2 days per full charge

Battery:

• Probe Battery Duration: 2 days per full charge

Power Consumption

• ldle: 
• Transmit:

1.4 ​ Applications

• Commercial Kitchen
  Restaurant
  Catering
  Food Processing
  Central Kitchen
  Cloud Kitchen
  HACCP Monitoring
  Food Safety
  Meat Factory
  Industrial Cooking

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

1.7  BLE connection

POM01-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:

• 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 , Switch & SIM Direction

1.8.1 Jumper JP2

Power on Device when put this jumper.

Power off device when take out 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

1.10  Hardware connection

1.10.1 Pins of AC detect module

1.10.2 Connection between AC detect module and POM01-NB motherboard

• VBAT <---> VDD
• DATA1 <---> PA8 (Tentative as interrupt pin 1)
• DATA2 <---> PB15 (Tentative as interrupt pin 2)
• GND <---> GND

1.10.3 Connection between AC detect module and AC power supply(90 ~230v)

• AC_N <---> AC power supply N
• AC_L <---> AC power supply L

2.  Use POM01-NB to communicate with IoT Server

2.1  Send data to IoT server via NB-IoT network

There are two version: -GE and -1T version of POM01-NB.

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 POM01-NB 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 POM01-NB 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, POM01-NB 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=1,0            // Use COAP Connection & hex Payload

AT+PRO=1,5            // Use COAP Connection & Json Payload

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

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

AT+PRO=3,0            // Use MQTT Connection & hex Payload

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

AT+PRO=4,0            // Use TCP Connection & hex Payload

AT+PRO=4,5            // Use TCP Connection & Json Payload

2.2.1 General Json Format(Type=5)

2.2.2 HEX format Payload(Type=0)

3. Configure POM01-NB

3.1 Configure Methods

POM01-NB 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.

4. Battery & Power Consumption

LPOM01-NB use ER26500 + SPC1520 battery pack and POM01-NB 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 (To be updated...)

Methods to Update Firmware:

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

• Update through UART TTL interface : Instruction.

6.  FAQ

6.1 How can I access the BC660K-GL AT Commands?

User can access to BC660K-GL directly and send AT Commands.

See BC660K-GL AT Command set

7.  Order Info

Part Number: POM01-NB-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:

• POM01-NB NB-IoT Power Outage Monitoring Sensor 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.com.