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1 [[image:1750409970687-610.png||data-xwiki-image-style-alignment="center" height="526" width="316"]]
2
3
4 **Table of Contents:**
5
6 {{toc/}}
7
8 (% aria-label="macro:toc widget" contenteditable="false" role="region" tabindex="-1" %)
9 (((
10 (% 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"]]
11 )))
12
13
14 = 1.  Introduction =
15
16 == 1.1 ​ What is LPT01 LoRaWAN Handheld Food Thermometer ==
17
18
19 Handheld temperature probes are vital tools for food safety, disease prevention, and regulatory compliance. They help ensure food stays out of the danger zone and that harmful pathogens are effectively eliminated.
20
21 The LPT01 is a LoRaWAN-enabled food temperature probe designed for remote monitoring of food temperature. It automatically records temperature data and uploads it to an IoT platform, helping meet food safety regulations while reducing manual documentation errors and saving time.
22
23 With real-time alerts for temperature deviations, the LPT01 enhances food safety by allowing swift corrective actions to prevent potential hazards. Its long-range LoRaWAN connectivity ensures reliable data transmission and simplifies deployment and maintenance—dramatically lowering operational costs for food safety management.
24
25
26 == ​1.2  Features ==
27
28
29 * LoRaWAN v1.0.3 Class A protocol
30 * LCD display
31 * Uplink on periodically or alarm event
32 * PT100 Temperature Sensor
33 * (% style="color:blue" %)**CR123A**(%%)** **1500mAh Battery
34
35 (% style="display:none" %)
36
37 == 1.3 Specification ==
38
39
40 **Common DC Characteristics:**
41
42 * Supply Voltage: Built-in Battery , 2.5v ~~ 3.0v
43 * Operating Temperature: -40 ~~ 85°C
44
45 **Probe Spec:**
46
47 * LPT01 total length: 28cm
48 * Probe length: 13.5cm
49 * Probe diameter: 4mm
50 * External A-grade PT100 temperature sensor
51 * Class A PT100 collects temperature accuracy ±(0.15 + 0.002 * |t|)°C
52 * Resolution: 0.01 °C
53 * Operating Range: -50 °C to 260 °C
54
55 **LoRa Spec:**
56
57 * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
58 * Max +22 dBm constant RF output vs.
59 * RX sensitivity: down to -139 dBm.
60 * Excellent blocking immunity
61
62 **Battery:**
63
64 * CR123A non-rechargeable battery
65 * Capacity: 1500mAh
66 * Self-Discharge: <1% / Year @ 25°C
67 * Max continuously current: 130mA
68 * Max boost current: 2A, 1 second
69
70 **Power Consumption**
71
72 * Sleep Mode: 5uA @ 3.3v
73 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
74
75 == 1.4 ​ Applications ==
76
77
78 * Logistics and Supply Chain Management
79 * Food management
80 * Cold chains solution
81 * Industrial Monitoring and Control
82
83 == 1.5 Sleep mode and working mode ==
84
85
86 (% 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.
87
88 (% 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.
89
90
91 == 1.6 Button & LEDs ==
92
93
94 [[image:1751330862777-180.jpeg||height="402" width="349"]]
95
96 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
97 |=(% style="width: 172px; background-color: rgb(79, 129, 189); color: white;" %)**Reset Behavior**|=(% style="width: 117px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 219px; background-color: rgb(79, 129, 189); color: white;" %)**Response**
98 |(% style="width:172px" %)[[image:1749518857619-959.png]] Three buttons×5|(% style="width:117px" %)Reset Device|(% style="width:219px" %)Reset the device, the signal icon​​​​ [[image:1754535503462-947.png||height="23" width="24"]] on the LCD will flash continuously until LoRaWAN joins.
99 |=(% scope="col" style="width: 172px; background-color: rgb(79, 129, 189); color: white;" %)**Behavior on STOP**|=(% style="width: 117px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 219px; background-color: rgb(79, 129, 189); color: white;" %)Response
100 |(% style="width:172px" %)[[image:1749518618870-272.png]] >2s|(% style="width:117px" %)Exits continuous reporting mode|(% style="width:219px" %)LCD displays "OFF".
101 |(% style="width:172px" %)[[image:1749518857619-959.png]] ×3|(% style="width:117px" %)Deactivate Device|(% style="width:219px" %)Enters deep sleep mode; LCD displays "SLP".
102 |=(% scope="col" style="width: 172px; background-color: rgb(79, 129, 189); color: white;" %)**Behavior on ℃/℉**|=(% style="width: 117px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 219px; background-color: rgb(79, 129, 189); color: white;" %)Response
103 |(% style="width:172px" %)[[image:1749518618870-272.png]] >3s|(% style="width:117px" %)Toggle Units|(% style="width:219px" %)Switches between °C/°F, converts current value, and saves as default.
104 |=(% scope="col" style="width: 172px; background-color: rgb(79, 129, 189); color: white;" %)**Behavior on HOLD**|=(% style="width: 117px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 219px; background-color: rgb(79, 129, 189); color: white;" %)Response
105 |(% style="width:172px" %) [[image:1749518857619-959.png]]×1|(% style="width:117px" %)Send one uplink|(% style="width:219px" %)If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:#037691" %)**LCD screen**(%%)** **displays the current temperature once.
106 |(% style="width:172px" %)(((
107 [[image:1749518618870-272.png]] >3s
108 )))|(% style="width:117px" %)Toggle Continuous Mode|(% style="width:219px" %)(((
109 After entering Continuous mode, "→" icon flashes.
110 LCD updates temperature in real-time.
111 Press again to pause/resume updates.(Click the "**HOLD**" button, and the temperature value on the LCD screen will be locked at the current value. Click the "**HOLD**" button again, and the temperature on the LCD screen will resume to change continuously.)
112 )))
113
114
115
116 == 2.1  How it works? ==
117
118 (((
119 (((
120
121 )))
122
123 The LPT01 is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the LPT01. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is **20 minutes**.
124
125 (((
126 On each uplink, LPT01 will get the temperature from the sensor and send out to server.
127 )))
128 )))
129
130
131 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
132
133
134 Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.
135
136 The LPS8V2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.
137
138 [[image:image-20240905150538-1.png||height="275" width="730"]]
139
140
141 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from LPT01.
142
143 Each LPT01 is shipped with a sticker with the default device EUI as below:
144
145 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2%20-%20LoRaWAN%20Temperature%20Transmitter%20User%20Manual/WebHome/image-20230426083905-2.png?rev=1.1||alt="image-20230426083905-2.png" height="287" width="618"]]
146
147 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
148
149 (% style="color:blue" %)**Create the application.**
150
151 [[image:image-20240907111048-1.png||height="183" width="1001"]]
152
153 [[image:image-20240907111305-2.png||height="572" width="1000"]]
154
155 (% style="color:blue" %)**Add devices to the created Application.**
156
157 [[image:image-20240907111659-3.png||height="185" width="977"]]
158
159 [[image:image-20240907111820-5.png||height="377" width="975"]]
160
161 (% style="color:blue" %)**Enter end device specifics manually.**
162
163 [[image:image-20240907112136-6.png||height="687" width="697"]]
164
165 (% style="color:blue" %)**Add DevEUI and AppKey.**
166
167 (% style="color:blue" %)**Customize a platform ID for the device.**
168
169 [[image:image-20240907112427-7.png]]
170
171
172 (% style="color:blue" %)**Step 2: **(%%)Add decoder
173
174 In TTN, user can add a custom payload so it shows friendly reading.
175
176 Click this link to get the decoder: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder/tree/main/>>url:https://github.com/dragino/dragino-end-node-decoder/tree/main/]]
177
178 Below is TTN screen shot:
179
180 [[image:image-20250311090652-1.png||height="455" width="1035"]]
181
182 [[image:image-20250311090909-2.png||height="403" width="1035"]]
183
184 (% style="color:blue" %)**Step 3:**(%%) Activate on LPT01
185
186 Press the button for 5 seconds to activate the LPT01.
187
188 (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
189
190 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
191
192 [[image:1754298253932-369.png||height="327" width="1146"]]
193
194
195 == 2.3  ​Working Mode & Uplink Payload ==
196
197 === 2.3.1 Device Status, FPORT~=5 ===
198
199
200 Users can send a downlink command (**0x26 01**) to request the LP01 device to report its configuration details.
201
202 Upon receiving this command, the LP01 will respond by uplinking a payload through FPort 5, formatted as follows:
203
204 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
205 |(% colspan="6" style="background-color:#4f81bd; color:white" %)**Device Status (FPORT=5)**
206 |(% style="width:103px" %)**Size (bytes)**|(% style="width:72px" %)**1**|**2**|(% style="width:91px" %)**1**|(% style="width:86px" %)**1**|(% style="width:44px" %)**2**
207 |(% style="width:103px" %)Value|(% style="width:72px" %)Sensor Model|Firmware Version|(% style="width:91px" %)Frequency Band|(% style="width:86px" %)Sub-band|(% style="width:44px" %)BAT
208
209 Example in TTN:
210
211 [[image:1750390664642-736.png]]
212
213
214 (% style="color:#037691" %)**Sensor Model**(%%): For LPT01, this value is 0x35
215
216 (% style="color:#037691" %)**Firmware Version**(%%): 0x0100, Means: v1.0.0 version
217
218 (% style="color:#037691" %)**Frequency Band**(%%):
219
220 0x01: EU868
221
222 0x02: US915
223
224 0x03: IN865
225
226 0x04: AU915
227
228 0x05: KZ865
229
230 0x06: RU864
231
232 0x07: AS923
233
234 0x08: AS923-1
235
236 0x09: AS923-2
237
238 0x0a: AS923-3
239
240 0x0b: CN470
241
242 0x0c: EU433
243
244 0x0d: KR920
245
246 0x0e: MA869
247
248 (% style="color:#037691" %)**Sub-Band**(%%):
249
250 AU915 and US915:value 0x00 ~~ 0x08
251
252 CN470: value 0x0B ~~ 0x0C
253
254 Other Bands: Always 0x00
255
256 (% style="color:#037691" %)**Battery Info**(%%):
257
258 Check the battery voltage.
259
260 Ex1: 0x0BE3 = 3043mV
261
262 Ex2: 0x0B49 = 2889mV
263
264
265 === 2.3.2  General acquisition mode, FPORT~=2 ===
266
267
268 (% style="color:blue" %)**Behavior:**
269
270 (% style="color:#037691" %)**1. Periodic Uplink: **(%%)Device transmits sensor data at fixed intervals configured by **[[AT+TDC>>||anchor="H3.1A0SetTransmitIntervalTime"]]**(default: 20 minutes).
271
272 * Trigger Condition: Only time-based (no external triggers).
273 * Downlink Capability: After the uplink transmission, the device opens a receive window (RX) to allow for potential downlink communication from the server.
274
275 (% style="color:#037691" %)**2. Manual Uplink ([[Single HOLD Button Press>>||anchor="H1.6Button26LEDs"]]): **(%%)If the device is already joined to the LoRaWAN network, pressing the HOLD button once triggers an immediate uplink transmission. The LCD screen displays the current temperature once upon button press.
276
277 * Trigger Condition: Single press of the HOLD button (if the device is joined to LoRaWAN).
278 * No Downlink Capability(purely unidirectional): This uplink transmission does not include a receive window (RX), meaning the device cannot receive downlink messages from the server.
279
280
281
282 (% style="color:blue" %)**Uplink Payload Format:**
283
284 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
285 |=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
286 **Size(bytes)**
287 )))|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)**2**|=(% style="width: 180px; background-color: rgb(79, 129, 189); color: white;" %)**4**|=(% style="width: 80px; background-color: rgb(79, 129, 189); color: white;" %)1|=(% style="width: 119px; background-color: rgb(79, 129, 189); color: white;" %)**2**
288 |(% style="width:62.5px" %)Value|(% style="width:54px" %)(((
289 BAT
290 )))|(% style="width:97px" %)Unix TimeStamp|(% style="width:110px" %)Unit&(((
291 sampling
292
293 _times
294 )))|(% style="width:119px" %)(((
295 Temp(PT100)
296
297
298 )))
299
300 Example in TTN:
301
302 [[image:image-20250311092307-6.png||height="276" width="1083"]]
303
304
305 (((
306 ==== (% style="color:blue" %)**Battery**(%%) ====
307
308 Sensor Battery Level.
309
310 Ex1: 0x0B45 = 2885mV
311
312 Ex2: 0x0B49 = 2889mV
313
314
315 ==== (% style="color:blue" %)**Unix TimeStamp**(%%) ====
316
317 Unit TimeStamp Example: 67CF92A7(H) = 1741656743(D)
318
319 Put the decimal value into this link([[https:~~/~~/www.epochconverter.com)>>https://www.epochconverter.com]])to get the time.
320
321
322 )))
323
324 (((
325 ==== (% style="color:blue" %)**Unit&sampling _times**(%%) ====
326
327 **Example(Unit)**:
328
329 If payload is: 0x04H: ((04 >>7 & 0x01)? "℉":"℃") = 0 , So the unit is °C.
330
331 If payload is: 0x86H: ((86 >>7 & 0x01)? "℉":"℃") = 1 , So the unit is ℉.
332
333 **Example(sampling_times):**
334
335 If payload is: 0x04H: (0x04 & 0x7F) = 4, So the sampling times is 4.
336
337 The sampling times are consistent with the number of collection groups set by the [[AT+WMOD>>https://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LPT01--LoRaWAN_Handheld_Food_Thermometer_User_Manual/#H3.2A0SetContinuousuplinkmode]] command.
338
339
340 ==== (% style="color:blue" %)**temperature(PT100)**(%%) ====
341 )))
342
343 **Example**:
344
345 * Positive: If payload is 09DDH, (09DD & 8000 == 0), temp = 09DDH /100 = 25.25
346 * Negative: If payload is FF3FH,  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3
347
348 (FF3F & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative)
349
350 * If the value is -327.6, it means the PT100 probe is not connected.
351
352 (% aria-label="Data URI image image widget" contenteditable="false" role="region" 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" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(% style="color:red" %)**Note:**(% title="Click and drag to resize" %) The temperature unit is determined based on the "Unit" of the previous byte.
353
354
355 === 2.3.3  Continuous Uplink mode, FPORT~=2 ===
356
357
358 (% style="color:blue" %)**Overview:**(%%)
359 Continuous Uplink Mode enables high-frequency data collection when triggered by specific conditions. This mode overrides the default periodic uplink (TDC) behavior and exits automatically based on configured rules or manual intervention.
360
361
362 (% style="color:blue" %)**Key Behavior:**
363
364 While in Continuous Mode, TDC timing is paused. The device does not send periodic uplinks at the configured TDC interval (e.g., 20 minutes).
365
366 Upon exiting Continuous Mode, the TDC timer resets. The next periodic uplink will occur after the full TDC interval (e.g., 20 minutes) from the moment of exit.
367
368
369 (% style="color:blue" %)**Uplink Payload Format (FPORT=2)**
370
371 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
372 |=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((
373 **Size**
374
375 **(bytes)**
376 )))|=(% style="width: 40px; background-color: rgb(79, 129, 189); color: white;" %)**2**|=(% style="width: 85px; background-color: rgb(79, 129, 189); color: white;" %)**4**|=(% style="width: 84px; background-color: rgb(79, 129, 189); color: white;" %)1|=(% style="width: 204px; background-color: rgb(79, 129, 189); color: white;" %)Dynamic Lenght , Depend on how many groups
377 |(% style="width:62.5px" %)Value|(% style="width:54px" %)(((
378 BAT
379 )))|(% style="width:85px" %)(((
380 Unix
381
382 TimeStamp
383 )))|(% style="width:84px" %)Unit & (((
384 sampling
385 _times
386 )))|(% style="width:204px" %)(((
387 Sensor value, each 2 bytes is a set of sensor values(The maximum is 100 groups).
388
389
390 )))
391
392
393
394 (% style="color:blue" %)**Activation & Deactivation Methods:**
395
396 (% style="color:#037691" %)**1. Entering Continuous Mode**
397
398 * (% style="color:#037691" %)**Manual Activation:**
399
400 Press and hold HOLD button for >3 seconds to toggle Continuous Mode.
401
402 Visual indicator: "→" icon flashes on LCD.
403
404 LCD displays real-time temperature updates (press again to pause/resume).
405
406 * (% style="color:#037691" %)**Downlink Command Activation:**
407
408 Send downlink payload **0xA5 01** to force entry.
409
410 (% title="Click and drag to resize" %)​(% style="color:red" %)**Note:**(%%) The downlink command can only be received and executed by the device after it initiates an automatic uplink at the scheduled TDC interval or .
411
412 * (% style="color:#037691" %)**Automatic Trigger (Temperature-Based):**
413
414 If detected temperature exceeds the upper limit (**parameter e **in** [[AT+WMOD>>https://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LPT01--LoRaWAN_Handheld_Food_Thermometer_User_Manual/#H3.2A0SetContinuousuplinkmode]]**), the device enters Continuous Mode.
415
416
417 (% style="color:#037691" %)**2. Exiting Continuous Mode**
418
419 The device exits Continuous Mode under any of the following conditions:
420
421 * (% style="color:#037691" %)**Automatic Exit Conditions**
422
423 **Duration Expired:** After running for the configured duration (**parameter c **in** [[AT+WMOD>>https://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LPT01--LoRaWAN_Handheld_Food_Thermometer_User_Manual/#H3.2A0SetContinuousuplinkmode]]**) (unit: minutes).
424
425 **Temperature Threshold:** If temperature falls below the lower limit (**parameter d **in** [[AT+WMOD>>https://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LPT01--LoRaWAN_Handheld_Food_Thermometer_User_Manual/#H3.2A0SetContinuousuplinkmode]]**).
426
427 * (% style="color:#037691" %)**Manual Exit Methods:**
428
429 Press STOP button for ≥2s → Exits continuous mode, LCD displays "OFF".
430
431 Press STOP button 3 times quickly → Deactivates device (deep sleep), LCD displays "SLP".
432
433 * (% style="color:#037691" %)**Downlink Command Exit:**
434
435 Send downlink payload **0xA4 01** to force exit.
436
437
438 In Continuous Sampling Mode, LPT01 will record the current sensor data at a fix interval, and report multiply group of data together to server later.
439
440 (% style="color:blue" %)**Configuration **(% style="color:#037691" %)**AT+WMOD=1,a,b,c,d,e**
441
442 (% style="color:blue" %)**Default Configuration:**(%%) AT+WMOD=1,10,6,10,0,0
443
444 (% style="color:blue" %)**Parameter Definitions: **
445
446 * (% style="color:#037691" %)**a**(% style="color:blue" %) (%%): Sampling interval (seconds), range: 0~~255.
447 * (% style="color:#037691" %)**b**(% style="color:blue" %) (%%): Number of readings per uplink (groups), max: 100.
448 * (% style="color:#037691" %)**c**(% style="color:#0000ff" %)** **(%%): Continuous Mode duration (minutes), range: 0~~255.
449 * (% style="color:#037691" %)**d**(%%)** **: Lower temperature threshold (exit if below).
450 * (% style="color:#037691" %)**e**(% style="color:blue" %)** **(%%): Upper temperature threshold (enter if above).
451
452 (% style="color:blue" %)**Example Configuration: **
453
454 Command: AT+WMOD=1,5,5,5,0,10
455
456 Behavior:
457
458 * Activates if temperature > 10°C.
459 * Samples every 5 seconds, groups 5 readings, and uplinks.
460 * Runs for 5 minutes or exits if temperature < 0°C.
461
462 Therefore, each uplink payload includes:
463
464 * Battery (2 bytes)
465 * + Group1 Sensor Value (2 Bytes): **the last 4th** reading for Temp
466 * + Group2 Sensor Value (2 Bytes): **the last 3rd** reading for Temp
467 * + Group3 Sensor Value (2 Bytes): **the last 2nd** reading for Temp
468 * + Group4 Sensor Value (2 Bytes): **the last** reading for Temp
469 * + Group5 Sensor Value (2 Bytes): reading for Temp
470
471 So totally 12 bytes payload in this example.
472
473 (% style="color:red" %)**Notice: Continuous sampling mode may result in a longer payload. the LPT01 will automatically select the appropriate DR uplink data. This may shorten the transmission distance.**
474
475 ​Example parse in TTNv3:
476
477 [[image:image-20250311153212-1.png]]
478
479
480
481 == 2.4  Unix Timestamp ==
482
483
484 LPT01 uses Unix Timestamp format based on
485
486 [[image:1655694312268-590.png]]
487
488 (% style="color:blue" %)**Key Features**
489
490 * Timestamp is included in uplink payloads (FPORT=2) for data synchronization.
491 * Compatible with standard epoch converters like [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]]
492
493 Below is the converter example
494
495 [[image:1655694332878-202.png]]
496
497 (((
498
499 )))
500
501
502 (% style="color:blue" %)**Set Device Time**
503
504 (((
505 (((
506 There are two methods to configure the device’s internal clock:
507 )))
508 )))
509
510 (((
511 (((
512 (% style="color:#4f81bd" %)**1. Automatic Sync via LoRaWAN MAC Command (Default)**
513
514 **Requirement:** Set [[SYNCMOD=1>>https://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H4.6Settimesynchronizationmethod28ThenetworkservermustsupportLoRaWANv1.0.329]](enabled by default).
515
516 **Behavior:**
517
518 * After joining the network, the device sends a DeviceTimeReq MAC command.
519 * The server replies with DeviceTimeAns to synchronize time.
520 * If synchronization fails, the device uses its internal clock and retries after the interval set by AT+SYNCTDC (default: 10 days).
521 )))
522 )))
523
524 (((
525 (((
526 (% style="color:red" %)**Note: LoRaWAN Server needs to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN v3 and loriot support but TTN v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN v2 if SYNCMOD=1.**
527 )))
528
529 (((
530 (% style="color:#4f81bd" %)**2. Manual Time Setting**
531
532 **Requirement:** Set SYNCMOD=0 (disables MAC sync).
533
534 **Methods:** Downlink Command format (% style="color:#4f81bd" %)**0x30 Timestamp(hex representation of timestamp) 00**
535
536 **Example:** downlink 3068956BCE00 to set current time : 2025-August-8 Friday 03:15:26
537
538
539 )))
540 )))
541
542 = 3.  Configure LPT01 via LoRaWAN Downlink =
543
544
545 (% style="color:blue" %)**Command configuration method**
546
547 (% style="color:red" %)**The LPT01 can be configured exclusively through LoRaWAN downlink commands.**(%%) While this manual references AT commands for clarity, these are provided solely to help understand the corresponding downlink payload formats - they cannot be executed directly on the device.
548
549 * (((
550 (((
551 LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]
552 )))
553 )))
554
555 (((
556 (((
557
558
559 (% style="color:blue" %)**Command Types**
560 )))
561
562 (((
563 There are two kinds of commands to configure LPT01, they are:
564 )))
565 )))
566
567 (((
568 (((
569 (% style="color:#4f81bd" %)**1. General Commands**.
570 )))
571 )))
572
573 (((
574 (((
575 These commands are to configure:
576 )))
577 )))
578
579 * (((
580 (((
581 General system settings like: uplink interval.
582 )))
583 )))
584 * (((
585 (((
586 LoRaWAN protocol & radio related command.
587 )))
588 )))
589
590 (((
591 (((
592 They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
593 )))
594 )))
595
596 (((
597 (((
598 (% style="color:#4f81bd" %)**2. LPT01-Specific Commands**
599 )))
600 )))
601
602 (((
603 (((
604 These specialized commands control features unique to the LPT01.
605
606 Please refer to the detailed descriptions of these commands below.
607
608
609 )))
610 )))
611
612 == 3.1  Set Transmit Interval Time ==
613
614
615 Feature: Change LoRaWAN End Node Transmit Interval.
616
617 (% style="color:#037691" %)**AT Command: AT+TDC**
618
619 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:501px" %)
620 |(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:166px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:180px" %)**Response**
621 |(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)(((
622 1200000(Default value)
623 OK
624 the interval is 1200000ms=1200s
625 )))
626 |(% style="width:155px" %)(((
627 AT+TDC=600000
628 )))|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)(((
629 OK
630 Set transmit interval to 600000ms=600 seconds
631 )))
632
633 (((
634 (% style="color:#037691" %)**Downlink Command: 0x01**
635 )))
636
637 (((
638 (((
639 Format: Command Code (0x01) followed by 3 bytes time value.
640
641 (((
642 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
643 )))
644
645 * Example 1: Downlink Payload: **0100001E**  ~/~/  Set Transmit Interval (TDC) = 30 seconds
646 * Example 2: Downlink Payload: **0100003C**  ~/~/  Set Transmit Interval (TDC) = 60 seconds
647 )))
648 )))
649
650 == 3.2  Set Continuous uplink mode ==
651
652
653 Feature: Get or set uplink behaviour in continuous uplink mode.
654
655 (% style="color:#037691" %)**AT Command: AT+WMOD**
656
657 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
658 |(% style="background-color:#4f81bd; color:white; width:178px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:149px" %)**Parameters**|(% style="background-color:#4f81bd; color:white; width:181px" %)**Explanation**
659 |(% colspan="1" rowspan="6" style="width:178px" %)(((
660
661
662
663
664
665
666 AT+WMOD=1,a,b,c,d,e
667 )))|(% style="width:149px" %)(((
668 **1:** Mode 1
669 )))|(% style="width:181px" %)Continuous Uplink Mode
670 |(% style="width:149px" %)(((
671 **a:** Set Sampling Interval
672 )))|(% style="width:181px" %)(((
673 Range: 1~~255
674
675 (Unit: Second)
676 )))
677 |(% style="width:149px" %)**b:** Define how many group of data will be uplink together|(% style="width:181px" %)Range: 1~~100
678 |(% style="width:149px" %)**c:** Duration of operation in continuous acquisition mode|(% style="width:181px" %)Range: 1~~255
679 |(% style="width:149px" %)**d: **Set the temperature lower limit value|(% style="width:181px" %)(((
680 Ex1: 0
681
682 Below the lower limit value will exit the continuous uplink mode.
683 )))
684 |(% style="width:149px" %)**e: **Set the upper temperature limit value|(% style="width:181px" %)(((
685 Ex1: 10
686
687 Higher than the upper limit value will enter the continuous uplink mode
688 )))
689 |(% colspan="3" style="width:178px" %)(((
690 (% style="color:blue" %)**Example: AT+WMOD=1,5,5,5,0,10**
691
692 When the measured temperature exceeds 10°C, the node will activate continuous measurement mode, which lasts for 5 minutes, with a sampling interval of 5 seconds, collecting data 5 times, and reporting the comprehensive data once.
693 If the temperature detected during the continuous measurement period falls below 0°C, the node will automatically exit continuous measurement mode.
694 )))
695
696 (% style="color:#037691" %)**Downlink Command: 0xA2**
697
698 * Downlink payload: **0xA2010505050000000A**  ~/~/ Same as AT+WMOD=1,5,5,5,0,10
699 * Downlink payload: **0xA20105050500000000**   ~/~/ Same as AT+WMOD=1,5,5,5,0,0
700
701 (% style="color:red" %)**Note: If you need to enter the continuous uplink mode immediately, you can control it by going downlink.**
702
703 * Downlink payload: **0xA5 01** ~/~/  After receiving the downlink, LPT01 will enter the continuous uplink mode, but if it detects that the current sampled temperature is lower than the set minimum threshold, it will automatically exit the continuous uplink mode。
704 * Downlink payload: **0xA4 01** ~/~/  After receiving the downlink, LPT01 will directly exit the continuous uplink mode.
705
706
707
708 == 3.3 Set time synchronization method ==
709
710
711 Feature: This command is used to enable automatic time calibration by time zone(Get or Set time synchronization method).
712
713 (% style="color:#037691" %)**AT Command: AT+SYNCMOD**
714
715 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
716 |=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 156px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 188px; background-color: rgb(79, 129, 189); color: white;" %)**Response/**Parameter
717 |(% style="width:154px" %)(((
718 AT+SYNCMOD=?
719 )))|(% style="width:156px" %)Get the current time synchronization method|(% style="width:188px" %)(((
720 1,0 (Default)
721
722 OK
723 )))
724 |(% colspan="1" rowspan="2" style="width:154px" %)AT+SYNCMOD=aa,bb|(% style="width:156px" %)(((
725 **aa:** Enable/disable automatic time zone calibration
726 )))|(% style="width:188px" %)(((
727 **0:** Disable automatic time zone calibration.
728
729 **1:**  Enable automatic time zone calibration
730 )))
731 |(% style="width:156px" %)**bb: **Set the time zone: -12 ~~ 12|(% style="width:188px" %)(((
732 Negative number: West Time Zone
733
734 Positive number: Eastern Time Zone
735 )))
736
737 (% style="color:#037691" %)**Downlink Command: 0x28**
738
739 Format: Command Code (0x28) followed by 2 bytes.
740
741 * Example 1: Downlink Payload: 28 00 00  ~/~/  Turn off the time zone calibration time.
742 * Example 2: Downlink Payload: 28 01 FA  ~/~/  Turn on time zone calibration time, UTC-6
743 * Example 3: Downlink Payload: 28 01 06  ~/~/  Turn on time zone calibration time, UTC+6
744
745 (% style="color:red" %)**Note: UTC-6: 256+(-6)=250(D)=0xFA(H)**
746
747
748 == 3.4 Set time synchronization interval ==
749
750
751 Feature: Get or set time synchronization interval in day or hour.
752
753 (% style="color:#037691" %)**AT Command: AT+SYNCTDC**
754
755 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
756 |=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 188px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 164px; background-color: rgb(79, 129, 189); color: white;" %)**Response/**Parameter
757 |(% style="width:154px" %)(((
758 AT+SYNCTDC=?
759 )))|(% style="width:188px" %)Gets the current time synchronization interval|(% style="width:164px" %)(((
760 12,1 (Default)
761
762 OK
763 )))
764 |(% colspan="1" rowspan="2" style="width:154px" %)(((
765 AT+SYNCTDC=aa,bb
766 )))|(% style="width:188px" %)(((
767 **aa:** Set the interval for automatic synchronization
768 )))|(% style="width:164px" %)Range: 0~~255
769 |(% style="width:188px" %)**bb:** Set the unit of the time synchronization interval|(% style="width:164px" %)(((
770 **0:** Unit: day
771
772 **1:** Unit: hour
773 )))
774
775 (% style="color:#037691" %)**Downlink Command: 0x29**
776
777 Format: Command Code (0x29) followed by 3 bytes.
778
779 * Example 1: Downlink Payload: 29  0C 00  ~/~/  Calibrate once every 12 days
780 * Example 2: Downlink Payload: 29  0C 01 ~/~/  Calibrate once every 12 hours
781
782
783
784 == 3.5 Temperature Unit ==
785
786
787 Feature: Get or set Temperature Unit.
788
789 (% style="color:#037691" %)**AT Command: AT+UNIT**
790
791 (% style="color:red" %)**Note: In US915 Band, Default unit is ℉, In other bands, default unit is ℃.**
792
793 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
794 |=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 188px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 164px; background-color: rgb(79, 129, 189); color: white;" %)**Response/**Parameter
795 |(% style="width:154px" %)AT+UNIT=?|(% style="width:188px" %)Gets Temperature unit interval|(% style="width:164px" %)(((
796 0
797
798 OK
799 )))
800 |(% colspan="1" rowspan="2" style="width:154px" %)AT+UNIT=a
801 |(% style="width:188px" %)(((
802 **0: **℉.
803
804 **1:** ℃.
805 )))|(% style="width:164px" %)(((
806 **0:** Unit: ℉
807
808 **1:** Unit: ℃
809 )))
810
811 (% style="color:#037691" %)**Downlink Command: 0xA1**
812
813 Format: Command Code (0xA1) followed by 1 bytes.
814
815 * Example 1: Downlink Payload: A1 00  ~/~/  Same as AT+UNIT=0
816 * Example 2: Downlink Payload: A1 01  ~/~/  Same as AT+UNIT=1
817
818
819
820 == 3.6 Button response time ==
821
822
823 Feature: Get or set the response time for the hold button.
824
825 (% style="color:#037691" %)**AT Command: AT+HOLDT**
826
827 (% style="color:red" %)**Note:By default, if the device is in idle mode, pressing and holding the HOLD button for 50 milliseconds to 2000 milliseconds will cause the device to send the temperature to the server.**(%%).
828
829 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
830 |=(% style="width: 155px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 188px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 164px; background-color: rgb(79, 129, 189); color: white;" %)**Response/**Parameter
831 |(% style="width:154px" %)AT+HOLDT=?|(% style="width:188px" %)Gets Temperature unit interval|(% style="width:164px" %)(((
832 50,2000
833 OK
834 )))
835 |(% colspan="1" rowspan="3" style="width:154px" %)(((
836
837
838 AT+HOLDT=a,b
839 )))
840 |(% style="width:188px" %)(((
841 a: Minimum Threshold
842 )))|(% style="width:164px" %)(((
843 Range: 50~~2000
844 )))
845 |(% style="width:188px" %)b: Maximum Threshold|(% style="width:164px" %)Range: 50~~2000
846
847 (% style="color:#037691" %)**Downlink Command: 0xA3**
848
849 Format: Command Code (0xA3) followed by 4 bytes.
850
851 * Example 1: Downlink Payload: A3 00 32 07 D0  ~/~/  Same as AT+HOLDT=50,2000
852 * Example 2: Downlink Payload: A3 00 C8 07 D0  ~/~/  Same as AT+HOLDT=200,2000
853
854
855
856 = 4.  Battery & Power Consumption =
857
858
859 LPT01 uses **CR123A** battery pack. See below link for detail information about the battery info and how to replace.
860
861 [[**Battery Info & Power Consumption Analyze**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
862
863
864 = 5. OTA Firmware update =
865
866
867 (% class="wikigeneratedid" %)
868 User can change firmware LPT01 to:
869
870 * Change Frequency band/ region.
871 * Update with new features.
872 * Fix bugs.
873
874 (((
875 **Firmware and changelog can be downloaded from :** **[[Firmware download link>>https://www.dropbox.com/scl/fo/ztlw35a9xbkomu71u31im/ACgkJj9mb52D-7RRKqjIBqw/LoRaWAN%20End%20Node/LPT01/Firmware?dl=0&rlkey=slk2s7r8z5q5b4rwh7c1v01sc&subfolder_nav_tracking=1]]**
876
877 **Methods to Update Firmware:**
878
879 * OTA firmware update via wireless : **[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]**
880
881
882 )))
883
884 = 6.  FAQ =
885
886
887 = 7.  Trouble Shooting =
888
889
890 = 8.  Order Info =
891
892
893 Part Number **:** (% style="color:blue" %)**LPT01-XX**
894
895 (% style="color:blue" %)**XX**(%%)**: **The default frequency band
896
897 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
898 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
899 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
900 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
901 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
902 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
903 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
904 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
905
906 = 9. ​ Packing Info =
907
908
909 **Package Includes**:
910
911 * LPT01 LoRaWAN Temperature Collector x 1
912
913 **Dimension and weight**:
914
915 * Device Size: cm
916 * Device Weight: g
917 * Package Size / pcs : cm
918 * Weight / pcs : g
919
920 = 10.  ​Support =
921
922
923 * 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.
924 * 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]].