Skip to Content

Wiki source code of DMT01

Version 7.1 by Edwin Chen on 2025/07/27 13:31
Show last authors
1
2
3 [[image:1753592237986-145.png||height="354" width="118"]] [[image:1753592287802-550.png||height="237" width="341"]]
4
5
6 **Table of Contents:**
7
8 {{toc/}}
9
10 (% aria-label="macro:toc widget" contenteditable="false" role="region" tabindex="-1" %)
11 (((
12 (% 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" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
13 )))
14
15
16
17 = 1.  Introduction =
18
19 == 1.1 ​ What is DMT01 Wireless Meat Thermometer ==
20
21
22 The DMT01 is a (% style="color:blue" %)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.
23
24 The system consists of two components:
25 - (% style="color:blue" %)Food-grade BLE High-Temperature Probe(%%) – A durable, high-heat resistant probe that measures internal food temperature during cooking.
26 - (% style="color:blue" %)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.
27
28 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.
29
30 == ​1.2  Features ==
31
32 * Wireless Meat Thermometer – Designed for accurate and reliable cooking temperature monitoring
33 * Food-Grade Probe – Safe for food contact and dishwasher-compatible for easy cleaning
34 * BLE 5.1 Broadcasting – Supports real-time local data transmission via Bluetooth Low Energy
35 * LoRaWAN Connectivity – Enables long-range, low-power data transmission to IoT platforms
36 * Smart Uplink Triggering – Supports periodic data reporting and real-time alerts on temperature thresholds
37
38 (% style="display:none" %)
39
40 == 1.3 Specification ==
41
42
43 (% style="color:blue" %)**Common DC Characteristics:**
44
45 * Supply Voltage: 90 ~~230v
46 * Operating Temperature: -40 ~~ 85°C
47
48 (% style="color:blue" %)**Food Probe Spec:**
49
50 * Food temperature range: -20 ~~120 °C, Accuracy: ±0.5°C
51 * Ambient temperature range: 0 ~~300°C, Accuracy: ±3°C
52
53 Battery Duration: 2 days per full charge
54
55
56
57 (% style="color:blue" %)**Battery:**
58
59 * Probe Battery Duration: 2 days per full charge
60
61 (% style="color:blue" %)**Power Consumption**
62
63 * **ldle: **
64 * **Transmit:**
65
66
67
68 == 1.4 ​ Applications ==
69
70 * Commercial Kitchen
71 * Restaurant
72 * Catering
73 * Food Processing
74 * Central Kitchen
75 * Cloud Kitchen
76 * HACCP Monitoring
77 * Food Safety
78 * Meat Factory
79 * Industrial Cooking
80
81 == 1.5 Sleep mode and working mode ==
82
83
84 (% style="color:blue" %)**Deep Sleep Mode:**(%%)** **Sensor doesn't have any NB-IoT activate. This mode is used for storage and shipping to save battery life.
85
86 (% style="color:blue" %)**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.
87
88
89 == 1.6 Button & LEDs ==
90
91
92 [[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/1675071855856-879.png?rev=1.1||alt="1675071855856-879.png"]]
93
94 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
95 |=(% 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**
96 |(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT between 1s < time < 3s|(% style="background-color:#f2f2f2; width:117px" %)Send an uplink|(% style="background-color:#f2f2f2; width:225px" %)(((
97 If sensor has already attached to NB-IoT network, sensor will send an uplink packet, (% style="color:blue" %)**blue led**(%%) will blink once.
98 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
99 )))
100 |(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT for more than 3s|(% style="background-color:#f2f2f2; width:117px" %)Active Device|(% style="background-color:#f2f2f2; width:225px" %)(((
101 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:#037691" %)**OTA mode**(%%) for 3 seconds. And then start to attach NB-IoT network.
102 (% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
103 Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device attach NB-IoT network or not
104 )))
105 |(% style="background-color:#f2f2f2; width:167px" %)Fast press ACT 5 times.|(% style="background-color:#f2f2f2; width:117px" %)Deactivate Device|(% style="background-color:#f2f2f2; width:225px" %)(((
106 (% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.
107 )))
108
109 == 1.7 BLE connection ==
110
111
112 POM01-NB support BLE remote configure and firmware update.
113
114 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:
115
116 * Press button to send an uplink
117 * Press button to active device.
118 * Device Power on or reset.
119
120 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
121
122
123 == 1.8 Pin Definitions , Switch & SIM Direction ==
124
125
126 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/S31-NBS31B-NB_BN-IoT_Outdoor_Temperature_Humidity_Sensor_User_Manual/WebHome/image-20230819104805-5.png?rev=1.1||alt="image-20230819104805-5.png"]]
127
128 === 1.8.1 Jumper JP2 ===
129
130 Power on Device when put this jumper.
131
132 Power off device when take out this jumper
133
134
135 === 1.8.2 BOOT MODE / SW1 ===
136
137 **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.
138
139 **2)** (% style="color:blue" %)**Flash:**(%%) work mode, device starts to work and send out console output for further debug
140
141
142 === 1.8.3 Reset Button ===
143
144 Press to reboot the device.
145
146
147 === 1.8.4 SIM Card Direction ===
148
149 See this link. [[How to insert SIM Card>>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]].
150
151
152 == 1.9 Mechanical ==
153
154
155 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/PS-LB%20--%20LoRaWAN%20Pressure%20Sensor/WebHome/image-20240109160800-6.png?rev=1.1||alt="image-20240109160800-6.png"]]
156
157
158 == 1.10  Hardware connection ==
159
160
161 === 1.10.1 Pins of AC detect module ===
162
163 [[image:image-20250320154706-2.png||height="180" width="499"]]
164
165 [[image:image-20250320154542-1.png||height="183" width="496"]]
166
167
168 === 1.10.2 Connection between AC detect module and POM01-NB motherboard ===
169
170 * VBAT <~-~--> VDD
171 * DATA1 <~-~--> PA8 (Tentative as interrupt pin 1)
172 * DATA2 <~-~--> PB15 (Tentative as interrupt pin 2)
173 * GND <~-~--> GND
174
175 [[image:image-20250320173553-3.png||height="409" width="602"]]
176
177 === 1.10.3 Connection between AC detect module and AC power supply(90 ~~230v) ===
178
179 * AC_N <~-~--> AC power supply N
180 * AC_L <~-~--> AC power supply L
181
182 [[image:image-20250320175924-5.png||height="231" width="770"]]
183
184
185 = 2.  Use POM01-NB to communicate with IoT Server =
186
187 == 2.1  Send data to IoT server via NB-IoT network ==
188
189 (((
190 (((
191
192 )))
193
194 The POM01-NB is equipped with a NB-IoT module, the pre-loaded firmware in POM01-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 POM01-NB.
195
196 Below shows the network structure:
197 )))
198
199
200
201 (% class="box infomessage" %)
202 (((
203 To be updated...
204 )))
205
206
207 There are two version: (% style="color:blue" %)**-GE**(%%) and (% style="color:blue" %)**-1T**(%%) version of POM01-NB.
208
209 (% 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 POM01-NB send data to IoT server.
210
211 * 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]].
212
213 * Set up sensor to point to IoT Server. See instruction of [[Configure to Connect Different Servers>>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.Configuretoconnecttodifferentservers]]. 
214
215 Below shows result of different server as a glance.
216
217 (% border="1" cellspacing="3" style="width:515px" %)
218 |(% style="background-color:#4f81bd; color:white; width:100px" %)**Servers**|(% style="background-color:#4f81bd; color:white; width:300px" %)**Dash Board**|(% style="background-color:#4f81bd; color:white; width:115px" %)**Comments**
219 |(% style="width:127px" %)[[Node-Red>>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/#H3.5A0Node-RedA028viaA0MQTT29]]|(% style="width:385px" %)[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/S31-NBS31B-NB_BN-IoT_Outdoor_Temperature_Humidity_Sensor_User_Manual/WebHome/image-20230819113244-8.png?width=367&height=183&rev=1.1||alt="image-20230819113244-8.png"]](((
220
221 )))|(% style="width:170px" %)
222 |(% style="width:127px" %)[[DataCake>>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="width:385px" %)[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/S31-NBS31B-NB_BN-IoT_Outdoor_Temperature_Humidity_Sensor_User_Manual/WebHome/image-20230819113244-9.png?width=367&height=119&rev=1.1||alt="image-20230819113244-9.png"]](((
223
224 )))|(% style="width:170px" %)
225 |(% style="width:127px" %)[[Tago.IO>>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/#H3.7A0Tago.ioA028viaA0MQTT29]]|(% style="width:385px" %) |(% style="width:170px" %)
226 |(% style="width:127px" %)[[General UDP>>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/#H3.1GeneralA0UDPA0Connection]]|(% style="width:385px" %)Raw Payload. Need Developer to design Dash Board|(% style="width:170px" %)
227 |(% style="width:127px" %)[[General MQTT>>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/#H3.2GeneralA0MQTTA0Connection]]|(% style="width:385px" %)Raw Payload. Need Developer to design Dash Board|(% style="width:170px" %)
228 |(% style="width:127px" %)[[ThingSpeak>>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/#H3.3A0ThingSpeakA028viaA0MQTT29]]|(% style="width:385px" %)[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/S31-NBS31B-NB_BN-IoT_Outdoor_Temperature_Humidity_Sensor_User_Manual/WebHome/image-20230819113244-10.png?width=367&height=104&rev=1.1||alt="image-20230819113244-10.png"]](((
229
230 )))|(% style="width:170px" %)
231 |(% style="width:127px" %)[[ThingsBoard>>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/#H3.6A0ThingsBoard.CloudA028viaA0MQTT29]]|(% style="width:385px" %)[[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/S31-NBS31B-NB_BN-IoT_Outdoor_Temperature_Humidity_Sensor_User_Manual/WebHome/image-20230819113244-11.png?width=367&height=141&rev=1.1||alt="image-20230819113244-11.png"]](((
232
233 )))|(% style="width:170px" %)
234
235 (% style="color:blue" %)**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>>url:https://wiki.thingseye.io/xwiki/bin/view/Main/]].
236
237
238 == 2.2 ​Payload Types ==
239
240
241 To meet different server requirement, POM01-NB supports different payload type.
242
243 **Includes:**
244
245 * [[General JSON format payload>>||anchor="H2.2.1GeneralJsonFormat28Type3D529"]]. (Type=5)
246
247 * [[HEX format Payload>>||anchor="H2.2.2HEXformatPayload28Type3D029"]]. (Type=0)
248
249 * [[ThingSpeak Format>>||anchor="H2.2.4ThingSpeakPayload28Type3D129"]]. (Type=1)
250
251 * [[ThingsBoard Format>>||anchor="H2.2.3ThingsBoardPayload28Type3D329"]]. (Type=3)
252
253 User can specify the payload type when choose the connection protocol. Example:
254
255
256 (% style="color:#037691" %)**AT+PRO=1,0**  (%%) ~/~/ Use COAP Connection & hex Payload
257
258 (% style="color:#037691" %)**AT+PRO=1,5**   (%%) ~/~/ Use COAP Connection & Json Payload
259
260 (% style="color:#037691" %)**AT+PRO=2,0**  (%%) ~/~/ Use UDP Connection & hex Payload
261
262 (% style="color:#037691" %)**AT+PRO=2,5**   (%%) ~/~/ Use UDP Connection & Json Payload
263
264 (% style="color:#037691" %)**AT+PRO=3,0**  (%%) ~/~/ Use MQTT Connection & hex Payload
265
266 (% style="color:#037691" %)**AT+PRO=3,5 ** (%%) ~/~/ Use MQTT Connection & Json Payload
267
268 (% style="color:#037691" %)**AT+PRO=4,0**  (%%) ~/~/ Use TCP Connection & hex Payload
269
270 (% style="color:#037691" %)**AT+PRO=4,5 ** (%%) ~/~/ Use TCP Connection & Json Payload
271
272
273 === 2.2.1 General Json Format(Type~=5) ===
274
275 (% class="box infomessage" %)
276 (((
277 To be updated...
278 )))
279
280
281 === 2.2.2 HEX format Payload(Type~=0) ===
282
283 (% class="box infomessage" %)
284 (((
285 To be updated...
286 )))
287
288
289
290
291 = 3. Configure POM01-NB =
292
293 == 3.1 Configure Methods ==
294
295
296 POM01-NB supports below configure method:
297
298 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
299
300 * AT Command via UART Connection : See [[UART Connection>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
301
302 == ​​​3.2  Serial Access Password ==
303
304
305 After the Bluetooth or UART connection is successful, use the Serial Access Password to enter the AT command window.
306
307 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.
308
309 (((
310 (((
311 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/RS485-NB%2C-NS_RS485%2CUART_to_NB-IoT_Converter_User_Manual/WebHome/image-20250226165815-1.png?rev=1.1||alt="image-20250226165815-1.png"]]
312 )))
313
314 (((
315 (% title="Click and drag to resize" %)​(%%)If you need to change the password, use **AT+PWORD=**xxxxxx (6 characters), -CB nodes only support lowercase letters.
316
317 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/S31-CBS31B-CB--NB-IoTLTE-M_Temperature%26Humidity_Sensor_User_Manual/WebHome/image-20240826183254-2.png?rev=1.1||alt="image-20240826183254-2.png"]]
318
319 (% style="color:red" %)**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.**
320
321 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/S31-CBS31B-CB--NB-IoTLTE-M_Temperature%26Humidity_Sensor_User_Manual/WebHome/image-20240826183302-3.png?rev=1.1||alt="image-20240826183302-3.png"]]
322
323
324 == 3.3 AT Commands Set ==
325
326
327 (% class="box infomessage" %)
328 (((
329 To be updated...
330 )))
331 )))
332 )))
333
334
335 = 4. Battery & Power Consumption =
336
337
338 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.
339
340 [[**Battery Info & Power Consumption Analyze**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
341
342
343 = 5. Firmware update =
344
345
346 User can change device firmware to:
347
348 * Update with new features.
349
350 * Fix bugs.
351
352 Firmware and changelog can be downloaded from : **Firmware download link **(% class="mark" %)(To be updated...)
353
354 Methods to Update Firmware:
355
356 * (Recommended way) OTA firmware update via BLE: [[**Instruction**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE_Firmware_Update_NB_Sensors_BC660K-GL/]].
357
358 * Update through UART TTL interface : **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART_Access_for_NB_ST_BC660K-GL/#H4.2UpdateFirmware28Assumethedevicealreadyhaveabootloader29]]**.
359
360 (((
361
362 )))
363
364 = 6.  FAQ =
365
366 == 6.1 How can I access the BC660K-GL AT Commands? ==
367
368
369 User can access to BC660K-GL directly and send AT Commands.
370
371 [[See BC660K-GL AT Command set>>url:https://www.dropbox.com/sh/5f6ssda5fum8rvs/AABT68l8ZzWOvZ5eg2qwOoFda?dl=0]]
372
373
374 = 7.  Order Info =
375
376
377 Part Number: (% style="color:blue" %)**POM01-NB-XX**
378
379 (% style="color:red" %)**XX:**
380
381 * (% style="color:#037691" %)**GE: **(%%)General version ( Exclude SIM card)
382
383 * (% style="color:#037691" %)**1T:**(%%) with 1NCE * 10 years 500MB SIM card and Pre-configure to ThingsEye server
384
385 = 8. ​ Packing Info =
386
387
388 (% style="color:#037691" %)**Package Includes:**
389
390 * POM01-NB NB-IoT Power Outage Monitoring Sensor x 1
391
392 (% style="color:#037691" %)**Dimension and weight:**
393
394 * Device Size: cm
395 * Device Weight: g
396 * Package Size / pcs : cm
397 * Weight / pcs : g
398
399 = 9.  ​Support =
400
401
402 * 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.
403 * 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>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]].