Version 69.5 by Xiaoling on 2024/01/03 10:22
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2 [[image:1654679359875-169.png]]
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13 **Table of Contents:**
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15 {{toc/}}
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23
24 = 1. Introduction =
25
26 == 1.1 What is LDS02 LoRaWAN Door Sensor ==
27
28
29 (((
30 (((
31 The Dragino LDS02 is a (% style="color:#037691" %)**LoRaWAN Door Sensor**(%%). It detects door open/close status and uplink to IoT server via LoRaWAN network. user can see the door status, open time, open counts in the IoT Server.
32 )))
33
34 (((
35 LDS02 is powered by (% style="color:#037691" %)**2 x AAA batteries**(%%) and target for long time use, these two batteries can provide about 16,000 ~~ 70,000 uplink packets. After battery running out, user can easily open the enclosure and replace with 2 common AAA batteries.
36 )))
37
38 (((
39 The LDS02 will send periodically data every day as well as for each door open/close action. It also (% style="color:#037691" %)**counts the door open times**(%%) and (% style="color:#037691" %)**calculate last door open duration**(%%). User can also disable the uplink for each open/close event, instead, device can count each open event and uplink periodically.
40 )))
41
42 (((
43 LDS02 has the (% style="color:#037691" %)**open alarm feature**(%%), user can set this feature so device will send Alarm if the door has been open for a certain time.
44 )))
45
46 (((
47 Each LDS02 is (% style="color:#037691" %)**pre-load with a set of unique keys**(%%) for LoRaWAN registration, register these keys to LoRaWAN server and it will auto connect after power on.
48
49
50 )))
51 )))
52
53 [[image:image-20220608171947-2.png]]
54
55
56 == 1.2 Features ==
57
58
59 * LoRaWAN Class A v1.0.3
60 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
61 * Door Open/Close detect
62 * Door open/close statistics
63 * 2 x AAA LR03 Batteries
64 * AT Commands to change parameters
65 * Uplink on periodically and open/close action
66 * Remote configure parameters via LoRa Downlink
67 * Firmware upgradable via program port
68
69
70 == 1.3 Storage & Operation Temperature ==
71
72
73 -10 ~~ 50 °C  or -40 ~~ 60 °C (depends on battery type, see [[FAQ>>||anchor="H7.6Whyiseedifferentworkingtemperatureforthedevice3F"]])
74
75
76 == 1.4 Applications ==
77
78
79 * Smart Buildings & Home Automation
80 * Logistics and Supply Chain Management
81 * Smart Metering
82 * Smart Agriculture
83 * Smart Cities
84 * Smart Factory
85
86 == 1.5 Dimension ==
87
88
89 Unit: mm
90
91 [[image:1654680563545-120.png]]
92
93
94 [[image:1654680510816-654.png]]
95
96
97 == 1.6 Firmware Change log ==
98
99
100 (((
101 (((
102 LDS02 use the same firmware as LDS01：[[LDS02 Image files – Download link>>https://www.dropbox.com/sh/9j35mnsxnz0y3ye/AACj5gHGOURGEHCpj-E861Mua?dl=0]]
103 )))
104 )))
105
106
107 = 2. Power ON LDS02 =
108
109
110 When receive the LDS02, please open the enclosure and add 2 x AAA batteries to power it. The [[LED>>||anchor="H4.7LEDs"]] will blink when device is powered.
111
112
113 = 3. How to install LDS02 =
114
115 Fixed way:
116
117 * Open the housing, install the screw through the reserved mounting hole, fix the bottom of the housing at the location to be detected, and then install the node body to the bottom housing.
118
119 [[image:image-20231222111730-1.jpeg||height="428" width="686"]]
120
121 * The double-sided glue was separated according to the cutting line and glued to the bottom of the LDS02 housing, and then the LDS02 was fixed at the location to be detected.
122
123 [[image:image-20231222111834-2.jpeg||height="443" width="685"]]
124
125
126 (((
127 (((
128 When install the LDS02 on wall. Please make sure install as below so the marks will close to each other when close the door.
129 )))
130
131 (((
132 Open/Close threshold range: ~~ 10mm
133
134
135 )))
136 )))
137
138 [[image:1654680716522-793.png]]
139
140
141
142
143
144 = 4. Operation Mode =
145
146 == 4.1 How it works? ==
147
148
149 (((
150 The LDS02 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and [[power on>>||anchor="H2.PowerONLDS02"]] the LDS02. It will auto join the network via OTAA.
151 )))
152
153 (((
154 In case user can't set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>||anchor="H6.UseATCommand"]] to set the keys in the devices.
155 )))
156
157
158 == 4.2 Example to join LoRaWAN network ==
159
160
161 Here shows an example for how to join the [[TTN V3 Network>>url:https://eu1.cloud.thethings.network/]]. Below is the network structure, we use [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway here. 
162
163 [[image:1654680810108-149.png]]
164
165
166 (((
167 The LDS02 in installed on the door edge to detect the open / close event. And send the status to LoRaWAN server. The LDS02 will uplink two type of messages to the server.
168 )))
169
170 * (((
171 A keep-alive message which send once per day.
172 )))
173 * (((
174 A door event message when there is a door open/close. ([[Alarm event can be disabled>>||anchor="H7.3CanIdisableuplinkforeacheventtosavebatterylife3F"]])
175 )))
176
177 (((
178
179
180 (((
181 The LG308 is already set to connect to [[TTN V3 network >>url:https://eu1.cloud.thethings.network/]]. What we need to now is only configure the TTN V3:
182
183
184 )))
185 )))
186
187 (((
188 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from LDS02.
189 )))
190
191 (((
192 Each LDS02 is shipped with a sticker with unique device EUI:
193 )))
194
195 [[image:image-20230426084924-1.png||height="229" width="493"]]
196
197
198 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
199
200
201 **Add APP EUI in the application**
202
203 [[image:1654671794691-956.png]]
204
205
206 [[image:1654671809850-574.png]]
207
208 [[image:1654671820156-640.png]]
209
210
211 [[image:1654681258096-500.png]]
212
213
214 **Select frequency plan**
215
216 If node's frequency is US915 or AU915, the frequency plan of the gateway must be consistent with that of TTN
217
218 [[image:image-20230816091714-1.png]]
219
220
221 **Add APP KEY and DEV EUI**
222
223 [[image:1654671889112-678.png]]
224
225
226
227 (((
228 (% style="color:blue" %)**Step 2**(%%):  **[[Power on>>||anchor="H2.PowerONLDS02"]]** LDS02 and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
229 )))
230
231
232 [[image:1654681390551-993.png]]
233
234
235 == 4.3 Uplink Payload ==
236
237
238 Uplink Payload total 10 bytes.
239
240 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:480px" %)
241 |=(% style="width: 80px;background-color:#D9E2F3;color:#0070C0" %)**Size(bytes)**|=(% style="width: 80px;background-color:#D9E2F3;color:#0070C0" %)**2**|=(% style="width: 80px;background-color:#D9E2F3;color:#0070C0" %)**1**|=(% style="width: 80px;background-color:#D9E2F3;color:#0070C0" %)**3**|=(% style="width: 80px;background-color:#D9E2F3;color:#0070C0" %)**3**|=(% style="width: 80px;background-color:#D9E2F3;color:#0070C0" %)**1**
242 |value|Status&BAT|(((
243 MOD
244 Always:0x01
245 )))|Total open door events|(((
246 Last door open
247 duration (unit: min)
248 )))|[[Alarm>>||anchor="H4.6AlarmBaseonTimeout"]]
249
250 **Example:**
251
252 [[image:1654681706301-731.png]]
253
254 [[image:1654681714641-440.png]]
255
256 (((
257 Example Payload Decoder in TTN V3: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder/tree/main/LDS02>>https://github.com/dragino/dragino-end-node-decoder/tree/main/LDS02]]
258
259
260 === 4.3.1 Battery Info ===
261
262
263 Check the battery voltage for LDS02.
264
265 Ex1: 0x0B88&3FFF = 2952mV
266
267 Ex2: 0xD152&3FFF = 4434mV
268
269
270 === 4.3.2 Status ===
271
272
273 Check the open door Status for LDS02.
274
275 **Example**:
276
277 If payload is: 0B:  (0000 1011&1000 0000== 0), DOOR_OPEN_STATUS is 0（CLOSE）
278
279 If payload is: D1: (1101 0001&1000 0000== 1) , DOOR_OPEN_STATUS is 1（OPEN）
280
281
282 === 4.3.3 MOD ===
283
284
285 Check the MOD
286
287 **Example:**
288
289 If payload is: 01:MOD is 1
290
291
292 === 4.3.4 Total open door events ===
293
294
295 Get Total open door events
296
297 **Example**:
298
299 If payload is: **00 00  93=** 147
300
301 If payload is: **00 00  00= **0
302
303
304 === 4.3.5 Last door open duration (unit: min) ===
305
306
307 Get Last door open duration
308
309 **Example:**
310
311 If payload is: **00 00  25=** 37
312
313 If payload is: **00 00  01= **1
314
315
316 === 4.3.6 Alarm ===
317
318
319 Get Alarm
320
321 **Example:**
322
323 If payload is: 01:  (0001 & 0001== 1), Alarm is 1
324
325 If payload is: 00:  (0000 & 0001== 0), Alarm is 0
326
327
328 )))
329
330 == 4.4 Downlink Payload ==
331
332
333 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:505px" %)
334 |=(% style="width: 182px;background-color:#D9E2F3;color:#0070C0" %)**Downlink Control Type**|=(% style="width: 96px;background-color:#D9E2F3;color:#0070C0" %)**Type Code**|=(% style="width: 227px;background-color:#D9E2F3;color:#0070C0" %)**Downlink payload size(bytes)**
335 |(% style="width:180px" %)TDC (Transmit Time Interval—Keep Alive Interval)|(% style="width:94px" %)0x01|(% style="width:226px" %)4
336 |(% style="width:180px" %)RESET|(% style="width:94px" %)0x04|(% style="width:226px" %)2
337 |(% style="width:180px" %)[[Set confirmed mode>>||anchor="HTypeCode0x05"]]|(% style="width:94px" %)0x05|(% style="width:226px" %)2
338 |(% style="width:180px" %)[[Clear Counting>>||anchor="HTypeCode0xA6"]]|(% style="width:94px" %)0xA6|(% style="width:226px" %)2
339 |(% style="width:180px" %)[[Enable/Disable Alarm>>||anchor="HTypeCode0xA7"]]|(% style="width:94px" %)0xA7|(% style="width:226px" %)2
340 |(% style="width:180px" %)[[Control ADR/DR>>||anchor="HTypeCode0xA8"]]|(% style="width:94px" %)0xA8|(% style="width:226px" %)3
341 |(% style="width:180px" %)[[Set Alarm Timeout>>||anchor="HTypeCode0xA9"]]|(% style="width:94px" %)0xA9|(% style="width:226px" %)4
342
343 Example Downlink payload setting in TTN V3:
344
345 [[image:1654673412319-976.png]]
346
347
348 === (% style="color:#037691" %)**Type Code 0x01**(%%) ===
349
350 If the payload=0100003C, means to control the LDS02’s Keep Alive interval to 0x00003C=60(S)
351
352
353 === (% style="color:#037691" %)**Type Code 0x04**(%%) ===
354
355 If payload = 0x04FF, it will reset the LDS02.
356
357
358 === (% style="color:#037691" %)**Type Code 0x05**(%%) ===
359
360 (((
361 0x05 00: Set uplink to LoRaWAN unconfirmed mode
362 )))
363
364 (((
365 0x05 01: Set uplink to LoRaWAN confirmed mode
366 )))
367
368
369 === (% style="color:#037691" %)**Type Code 0xA6**(%%) ===
370
371 (((
372 Example: 0xA601: Clear Counting
373 For LDS02: reset both count number and time.
374 )))
375
376
377 === (% style="color:#037691" %)**Type Code 0xA7**(%%) ===
378
379 (((
380 0xA7 01 : Equal to AT+DISALARM=1
381 )))
382
383 (((
384 0xA7 00 : Equal to AT+DISALARM=0
385 )))
386
387
388 === (% style="color:#037691" %)**Type Code 0xA8**(%%) ===
389
390 (((
391 Format: 0xA8 aa bb
392 )))
393
394 (((
395 aa: 1: Enable ADR; 0: Disable ADR (Same as AT+CADR command)
396 )))
397
398 (((
399 bb: set DR (Same as AT+CDATARATE ,only valid after ADR=0)
400 )))
401
402 (((
403 Example: 0x A8 00 02 : Set ADR=0 and DR=1
404 )))
405
406
407 === (% style="color:#037691" %)**Type Code 0xA9**(%%) ===
408
409 See [[Alarm Base Timeout>>||anchor="H4.6AlarmBaseonTimeout"]] for detail.
410
411
412 == 4.5 Integrate with Datacake ==
413
414
415 (((
416 (((
417 Datacake provides a human friendly interface to show the sensor data, once we have data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
418 )))
419 )))
420
421 (((
422
423 )))
424
425 (((
426 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
427 )))
428
429 (((
430 (% style="color:blue" %)**Step 2**(%%): To configure the Application to forward data to Datacake you will need to add integration. To add the Datacake integration, perform the following steps:
431 )))
432
433
434 [[image:1654674520913-519.png]]
435
436
437 [[image:1654674530910-914.png]]
438
439
440 [[image:1654674543078-401.png]]
441
442
443 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Datacake.
444
445 (% style="color:blue" %)**Step 4**(%%): Search LDS02 and add DevEUI.
446
447 [[image:1654674556510-911.png]]
448
449
450 == 4.6 Alarm Base on Timeout ==
451
452
453 (((
454 LDS02 can monitor the timeout for a status change, this feature can be used to monitor some event such as open fridge too long etc.
455 )))
456
457 (((
458 User configure this feature by using:
459 )))
460
461 (((
462 (% style="color:blue" %)**AT Command**(%%) **to configure:**
463 )))
464
465 (((
466 * (% style="color:red" %)**AT+TTRIG=1,30 ** (%%) **~-~->** When status change from close to open, and device keep in open
467 )))
468
469 (((
470 status for more than 30 seconds. LDS02 will send an uplink packet, the Alarm bit (the lowest bit of 10^^th^^ byte of payload) on this uplink packet is set to 1.
471 )))
472
473
474 (((
475 * (% style="color:red" %)**AT+TTRIG=0,0** (%%) **~-~->**  Default Value, disable timeout Alarm.
476 )))
477
478 (((
479 (% style="color:blue" %)**Downlink Command**(%%) **to configure:**
480 )))
481
482 (((
483 **Command: (% style="color:red" %)0xA9 aa bb cc(%%)**
484 )))
485
486 (((
487 **A9: **Command Type Code
488 )))
489
490 (((
491 **aa:** status to be monitor
492 )))
493
494 (((
495 **bb cc:** timeout.
496 )))
497
498 (((
499 If user send 0xA9 01 00 1E: equal to AT+TTRIG=1,30
500 )))
501
502 (((
503 **Or**
504 )))
505
506 (((
507 0xA9 00 00 00: Equal to AT+TTRIG=0,0. Disable timeout Alarm.
508 )))
509
510
511 == 4.7 LEDs ==
512
513
514 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:463px" %)
515 |=(% style="width: 186px;background-color:#D9E2F3;color:#0070C0" %)**Action**|=(% style="width: 277px;background-color:#D9E2F3;color:#0070C0" %)**LED behavior**
516 |(% style="width:184px" %)Power On|(% style="width:275px" %)(% style="color:green" %)**GREEN on 1s, **(% style="color:red" %)**RED on 1s,**(%%)** (% style="color:blue" %)BLUE on 1s(%%)**
517 |(% style="width:184px" %)Joined successful|(% style="width:275px" %)(% style="color:green" %)**GRENN LED **(%%)on 5s
518 |(% style="width:184px" %)Send an uplink message|(% style="width:275px" %)(% style="color:green" %)**GREEN LED**(%%) blinks once
519 |(% style="width:184px" %)Got a downlink message|(% style="width:275px" %)(% style="color:blue" %)**BLUE LED**(%%) blinks once
520
521 = 5. Battery & How to replace =
522
523 == 5.1 Battery Type and replace ==
524
525
526 (((
527 LDS02 is equipped with 2 x AAA LR03 batteries. If the batteries running low (shows 2.1v in the platform). User can buy generic AAA battery and replace it.
528
529 (% style="color:red" %)**Note:**
530
531 1. The LDS02 doesn't have any screw, use can use nail to open it by the middle.
532 1. Make sure the direction is correct when install the AAA batteries.
533 )))
534
535 (((
536 (% style="color:red" %)**Important Notice: Make sure use new AAA LR03 battery and the battery doesn't have broken surface.**
537 )))
538
539 (((
540
541 )))
542
543 (((
544 Example of AAA LR03 batter:
545 )))
546
547 [[image:1654675278044-307.png]]
548
549
550 == 5.2 Power Consumption Analyze ==
551
552
553 (((
554 Dragino battery powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimate battery life:
555 )))
556
557 (((
558 [[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
559 )))
560
561
562 = 6. Use AT Command =
563
564 == 6.1 Access AT Command ==
565
566
567 LDS02 supports AT Command set. User can use a USB to TTL adapter to configure LDS02 via use AT command, as below.
568
569 [[image:image-20221226104705-1.png||height="572" width="872"]]
570
571
572 (((
573 In PC, User needs to set (% style="color:#037691" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**115200**(%%) to access to access serial console of LDS02. Below is the output for reference:
574 )))
575
576 (((
577 The AT Access password is (% style="color:red" %)**123456**.
578 )))
579
580 [[image:1654675618022-630.png]]
581
582
583 (((
584 Each AT Command need to (% style="color:red" %)**add an ENTER**(%%) at the end before send.
585 )))
586
587 (((
588 When entering the first command, the (% style="color:red" %)**RED LED**(%%) will on and user can now input AT Commands. After input all needed AT Commands, please input **AT+CLPM=1** to set the device to work in Low Power mode and (% style="color:red" %)**RED LED**(%%) will be off.
589 )))
590
591 (((
592 More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]]
593 )))
594
595
596 = 7. FAQ =
597
598 == 7.1 How to upgrade the image? ==
599
600
601 **~1. Connect DAPLINK and LDS02**
602
603 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/Firmware%20Upgrade%20Instruction/WebHome/image-20220527084230-4.png?rev=1.1||alt="image-20220527084230-4.png"]]
604
605 [[image:image-20230726175624-1.jpeg||height="565" width="753"]]
606
607 **3.3V<~-~-~-~-->VDD**
608
609 **CLK<~-~-~-~-~-~->CLK**
610
611 **DIO<~-~-~-~-~-~->DIO**
612
613 **GND<~-~-~-~-~-~->GND**
614
615
616 **2. Install PSoCProgrammer 3.27.1**
617
618 Download Link: [[PSoCProgrammer3.27.1>>url:https://www.dragino.com/downloads/index.php?dir=tools/]]
619
620 And then use PSoCProgrammer to upgrade the firmware ( **must use this version: PSoCProgrammer3.27.1** )
621
622 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/Firmware%20Upgrade%20Instruction/WebHome/image-20220527084537-7.png?rev=1.1||alt="image-20220527084537-7.png"]]
623
624
625 **3. Download Sensor Firmware**
626
627 Downlink [[Firmware Location(same as LDS01)>>url:https://www.dropbox.com/sh/9j35mnsxnz0y3ye/AACj5gHGOURGEHCpj-E861Mua?dl=0]] to prepare the update.
628
629
630 **4. Upgrade Firmware**
631
632 Open PSOC Programmer, select the default configuration, no need to modify
633
634 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/Firmware%20Upgrade%20Instruction/WebHome/image-20220527084612-8.png?rev=1.1||alt="image-20220527084612-8.png"]]
635
636 Click the file icon to select the software to be burned：
637
638 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/Firmware%20Upgrade%20Instruction/WebHome/image-20220527084705-9.png?rev=1.1||alt="image-20220527084705-9.png"]]
639
640 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/Firmware%20Upgrade%20Instruction/WebHome/image-20220527084739-10.png?width=1034&height=453&rev=1.1||alt="image-20220527084739-10.png" height="453" width="1034"]]
641
642 Click the download icon, and the progress bar as shown in the figure below will appear. When PASS appears, it proves that the burning is successful.
643
644 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/Firmware%20Upgrade%20Instruction/WebHome/image-20220527084831-11.png?rev=1.1||alt="image-20220527084831-11.png"]]
645
646 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/Firmware%20Upgrade%20Instruction/WebHome/image-20220527084907-12.png?rev=1.1||alt="image-20220527084907-12.png"]]
647
648 (% style="color:red" %)**It is very important to press the reset button after the upgrade., this is to set the device to work in Low Power mode.**
649
650 (% style="color:red" %)**If you change different LoRa Frequency Bands/Region, you need using AT+FDR command to restore factory data after program success.**
651
652
653 == 7.2 How to change the LoRa Frequency Bands/Region? ==
654
655
656 If user has for example US915 frequency and want to change it to AS923 frequency. User can follow the introduction for [[how to upgrade image>>||anchor="H7.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
657
658
659 == 7.3 Can I disable uplink for each event to save battery life? ==
660
661
662 Yes, User can use below method to disable this:
663
664
665 (% style="color:blue" %)**via AT Command**:
666
667 (% style="color:red" %)**AT+DISALARM=1**(%%), End node will only send packet in TDC time.
668
669 (% style="color:red" %)**AT+DISALARM=0**(%%), End node will send packet in TDC time or status change for door sensor. 
670
671
672 (% style="color:blue" %)**via LoRaWAN downlink Command**:
673
674 (% style="color:red" %)**0xA701**(%%) : Equal to AT+DISALARM=1
675
676 (% style="color:red" %)**0xA700**(%%) : Equal to AT+DISALARM=0
677
678
679 == 7.4 How to change Sub-Band for LDS02? ==
680
681
682 (% style="color:blue" %)**Before v1.6 firmware**(%%): LDS02 works in Subband 2 by default in AU915 / US915 band. So if the LoRaWAN server works in other subband, there will be issue for LDS02 to Join the server. In this case, User can use AT COmmand to change the subband. See AT Command chapther for the hardware connection. Below are the steps to change sub-band:
683
684 * Press rest button.
685 * Send (% style="color:blue" %)**123456**(%%) password
686 * Send command (% style="color:blue" %)**AT+CFREQBANDMASK=0006 **(%%)( 0001 for subband 1, 0002 for subband 2, etc..)
687 * Press rest button to restart to new subband
688 * Example output:
689
690 (% class="mark small" %)[3369]DRAGINO LWL01 Device
691 [3370]Frequency Band: US915 v1.5
692 [3373]OTAA
693 [3374]DevEui= 7896785455246354
694 [3377]class type A
695 [3379]freq mode intra
696 [3381]**scan chn mask 0x0002   ~-~-> use subband 2**
697
698 (% class="mark small" %)LM502:~~# [10793]txDone
699 123456       ~-~-> ENTER PASSWORD
700 Correct Password
701
702 (% class="mark small" %)[105115]rxTimeOut
703 **AT+CFREQBANDMASK=0020 ~-~-> Change to Subband6**
704 OK
705
706 (% class="mark small" %)[3371]DRAGINO LWL01 Device
707 [3373]Frequency Band: US915 v1.5
708 [3376]OTAA
709 [3377]DevEui= 7896785455246354
710 [3380]class type A
711 [3382]freq mode intra
712 [3384]**scan chn mask 0x0001  ~-~-> reboot and works on Subband1 now**
713
714 [[image:image-20230103143821-1.png]]
715
716
717 (% style="color:blue" %)**Since firmware v1.6: **(%%)LDS02 works in chn mask 0x0000. where cover all subbands. so no need to use AT Commands to change subband and it can works for every subband
718
719
720 == 7.5 My sensor works for Helium AU915 before but not it doesn't work, Why? ==
721
722
723 It is sub-band issue, See chapter 7.4.Helium Change the Subband for AU915 from subband2 to Subband6 which cause the sensor doesn't work.
724
725
726 == 7.6 Why i see different working temperature for the device? ==
727
728
729 The working temperature range of device depends on the battery user choose.
730
731 * Normal AAA Battery can support -10 ~~ 50°C working range.
732 * Special AAA battery can support -40 ~~ 60 °C working range. For example: [[Energizer L92>>url:https://data.energizer.com/pdfs/l92.pdf]]
733
734
735 = 8. Order Info =
736
737
738 **Part Number: (% style="color:blue" %)LDS02-XXX(%%)**
739
740 (% style="color:blue" %)**XXX:**(%%) The default frequency band
741
742 * (% style="color:red" %)**EU433**(%%): frequency  bands EU433
743 * (% style="color:red" %)**EU868**(%%): frequency  bands EU868
744 * (% style="color:red" %)**KR920**(%%): frequency  bands KR920
745 * (% style="color:red" %)**CN470**(%%): frequency bands CN470
746 * (% style="color:red" %)**AS923**(%%): frequency  bands AS923
747 * (% style="color:red" %)**AU915**(%%): frequency bands AU915
748 * (% style="color:red" %)**US915**(%%): frequency bands  US915
749 * (% style="color:red" %)**IN865**(%%):  frequency bands  IN865
750 * (% style="color:red" %)**CN779**(%%): frequency bands CN779
751
752 = 9. Packing Info =
753
754
755 (((
756 **Package Includes**:
757 )))
758
759 * (((
760 LDS02 x 1
761 )))
762
763 (((
764 **Dimension and weight**:
765 )))
766
767 * (((
768 Device Size: 69.2 x 29.2 x 14.8 mm
769
770
771 )))
772
773 = 10. Support =
774
775
776 * 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.
777
778 * 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:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].

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