Table of Contents:

• 1.  Introduction
  • 1.1 ​ What is DMT01 Wireless Meat Thermometer
  • ​1.2  Features
  • 1.3  Specification
  • 1.4 ​ Applications
  • 1.5 Product Apperance
  • 1.6  Working mode
  • 1.7 LED Status
  • 1.8 Button Function
  • 1.9 Power on device and Recharge Probe
• 2.  Use DMT01
  • 2.1  How it works
    • Connection Mode: Probe is near by the Charge, within BLE range
    • Broadcast Mode: Probe is far away from the Charge, out of BLE range
  • 2.2 Activate Device
  • 2.2  How it works?
  • 2.3  ​Quick guide to connect to LoRaWAN server (OTAA)
  • 2.3 LoRaWAN Payload
    • 2.3.1 Device Status, FPORT=5
    • 2.3.2  Sensor Data. FPORT=2
  • 2.4 Bluetoothe Broadcast Payload
• 3. Configure DMT01  -- 需要修改
  • 3.1 Configure Methods
  • 3.2 Downlink Commands Set
• 4. Firmware update
  • 4.1 Update LoRa software
  • 4.2 Update BLE software
• 5.  FAQ
• 6.  Order Info
• 7. ​ Packing Info
• 8.  ​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/small design 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: +5v via USB Type-C
• Operating Temperature:

Food Probe Spec:

• Length: 126mm
• Diameter: 6mm
• Food temperature: -30 ~110 °C, Accuracy: ±0.5°C
• Ambient temperature: 0 ~380°C, Accuracy: ±5°C
• Wireless: BLE 5.1
• Distance: ≥ 30m
• Battery: 4mAh
• Recharge time: ＜ 2 hours
• Battery Duration: ＞30 hours
• IP Rate: IP67, Dish Washer proof

Charger Spec:

• BLE v5.1 + LoRaWAN
• Power Input: USB Type-C, +5v
• Battery: Li-ion , 3000mAh
• Recharge time: ＜ 2 hours

1.4 ​ Applications

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

1.5 Product Apperance

1.6  Working mode

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

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.

1.7 LED Status

The DMT01 uses a dual-color LED to indicate system status:

1.8 Button Function

Behavior on ACT	Function	Action
>3s	Active Device	Red/Green alternating blink (3 seconds), DMT01 will enter working mode and start to JOIN LoRaWAN network. When the probe is placed in the repeater to charge, the green LED above the relay box will have a breathing effect. When the probe is taken out, the LED light will go out.
1~3s	Switch working mode	There are three operating modes: Default LoRaWAN and Bluetooth broadcast mode, Separate LoRaWAN mode Separate Bluetooth broadcast mode. Note: To switch modes, remove the probe and press the button; otherwise, the mode will not switch.

1.9 Power on device and Recharge Probe

2.  Use DMT01

2.1  How it works

2.2  How it works?

2.3  ​Quick guide to connect to LoRaWAN server (OTAA)

Following is an example for how to join the TTN v3 LoRaWAN Network. Below is the network structure; we use the LPS8v2  as a LoRaWAN gateway in this example. 

The LPS8V2 is already set to connected to TTN network , so what we need to now is configure the TTN server.

Step 1: Create a device in TTN with the OTAA keys from DMT01.

Each DMT01 is shipped with a sticker with the default device EUI as below:

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

Create the application.

Add devices to the created Application.

Enter end device specifics manually.

Add DevEUI and AppKey.

Customize a platform ID for the device.

Step 2: Add decoder

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

Click this link to get the decoder: https://github.com/dragino/dragino-end-node-decoder/tree/main/

Below is TTN screen shot:

Step 3: Activate on DMT01

Press the button for 3 seconds to activate the DMT01.

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

2.3 LoRaWAN Payload

2.3.1 Device Status, FPORT=5

Users can use the downlink command(0x26 01) to ask DMT01 to send device configure detail, include device configure status. DMT01 will uplink a payload via FPort=5 to server.

The Payload format is as below.

Example in TTN: 

Sensor Model: For DMT01, this value is 0x4B

Firmware Version: 0x0101, Means: v1.0.1 version

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

Sub-Band:

AU915 and US915:value 0x00 ~ 0x08

CN470: value 0x0B ~ 0x0C

Other Bands: Always 0x00

2.3.2  Sensor Data. FPORT=2

Sensor Data is uplink via FPORT=2

BoxBat

Sensor Battery Level.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

DevMode

MACaddr

Read:0x(0197)=412    Value:  407 / 10=40.7, So 40.7%

ProbeBat

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.

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

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

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

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

If payload >> 2 = 0x31     -->  means MOD=31, this message is a reply message for polling, this message contains the alarm settings. see this link for detail. 

Food temperature

Example:

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)

Ambient temperature

Example:

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)

Unit timestamp

Unit TimeStamp Example: 67CF92A7(H) = 1741656743(D)

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

2.4 Bluetoothe Broadcast Payload

3. Configure DMT01  -- 需要修改

3.1 Configure Methods

User can use LoRaWAN downlink command to configure the DMT01

4. Firmware update

Firmware download link (To be updated...)

User can upgrade the firmware for DMT01 charger. The charger include two piece of software:

• For LoRa part: OTA firmware update via LoRa:.

• For BLE and controller part. 

4.1 Update LoRa software

4.2 Update BLE software

5.  FAQ

6.  Order Info

Part Number: DMT01-XX

XX:

• EU433: Frequency bands EU433
• EU868: Frequency bands EU868
• KR920: Frequency bands KR920
• CN470: Frequency bands CN470
• AS923: Frequency bands AS923
• AU915: Frequency bands AU915
• US915: Frequency bands US915
• IN865: Frequency bands IN865
• CN779: Frequency bands CN779

7. ​ Packing Info

Package Includes:

• DMT01 -  Digital Meat Thermoneter x 1

Dimension and weight:

• Device Size: cm
• Device Weight: g
• Package Size / pcs : cm
• Weight / pcs : g

8.  ​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.