Last modified by Mengting Qiu on 2024/04/02 16:44
<
From version < 115.14 >
edited by Xiaoling
on 2022/07/09 17:55
To version < 119.3 >
edited by Xiaoling
on 2022/08/22 15:05
>
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Summary

Details

Page properties
Content
... ... @@ -17,21 +17,35 @@
17 17  
18 18  = 1.  Introduction =
19 19  
20 +
20 20  == 1.1 ​ What is N95S31B NB-IoT Sensor Node ==
21 21  
22 22  (((
23 23  
24 24  
26 +(((
25 25  The Dragino N95S31B is a (% style="color:blue" %)**NB-IoT Temperature and Humidity Sensor**(%%) for Internet of Things solution. It is used to measure the (% style="color:blue" %)**surrounding environment temperature and relative air humidity precisely**(%%), and then upload to IoT server via NB-IoT network*.
28 +)))
26 26  
30 +(((
27 27  The temperature & humidity sensor used in N95S31B is SHT31, which is fully calibrated, linearized, and temperature compensated digital output from Sensirion, it provides a strong reliability and long-term stability. The SHT31 is fixed in a (% style="color:blue" %)**waterproof anti-condensation casing **(%%)for long term use.
32 +)))
28 28  
34 +(((
29 29  N95S31B supports different uplink methods include (% style="color:blue" %)**TCP, MQTT, UDP and CoAP**(%%) for different application requirement.
36 +)))
30 30  
38 +(((
31 31  N95S31B is powered by(% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), It is designed for long term use up to several years. (Real-world battery life depends on the use environment, update period. Please check related Power Analyze report).
40 +)))
32 32  
42 +(((
43 +
44 +)))
33 33  
46 +(((
34 34  ~* make sure you have NB-IoT coverage locally.
48 +)))
35 35  
36 36  
37 37  )))
... ... @@ -42,6 +42,7 @@
42 42  
43 43  == 1.2 ​ Features ==
44 44  
59 +
45 45  * NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
46 46  * Monitor Temperature & Humidity via SHT31
47 47  * AT Commands to change parameters
... ... @@ -64,6 +64,8 @@
64 64  * Supply Voltage: 2.1v ~~ 3.6v
65 65  * Operating Temperature: -40 ~~ 85°C
66 66  
82 +
83 +
67 67  (% style="color:#037691" %)**NB-IoT Spec:**
68 68  
69 69  * - B1 @H-FDD: 2100MHz
... ... @@ -73,9 +73,10 @@
73 73  * - B20 @H-FDD: 800MHz
74 74  * - B28 @H-FDD: 700MHz
75 75  
76 -(% style="color:#037691" %)**Battery:**
77 77  
78 78  
95 +(% style="color:#037691" %)**Battery:**
96 +
79 79  * Li/SOCI2 un-chargeable battery
80 80  * Capacity: 8500mAh
81 81  * Self Discharge: <1% / Year @ 25°C
... ... @@ -87,6 +87,7 @@
87 87  
88 88  == ​1.4  Applications ==
89 89  
108 +
90 90  * Smart Buildings & Home Automation
91 91  * Logistics and Supply Chain Management
92 92  * Smart Metering
... ... @@ -98,15 +98,20 @@
98 98  ​
99 99  
100 100  
101 -== 1.5  Pin Definitions ==
102 102  
121 +== 1.5  Pin Definitions & Switch ==
122 +
123 +
103 103  N95S31B use the mother board from NBSN95 which as below.
104 104  
126 +
105 105  [[image:image-20220709144723-1.png]]
106 106  
107 107  
130 +
108 108  === 1.5.1 Jumper JP2 ===
109 109  
133 +
110 110  Power on Device when put this jumper.
111 111  
112 112  
... ... @@ -113,14 +113,20 @@
113 113  
114 114  === 1.5.2 BOOT MODE / SW1 ===
115 115  
140 +
141 +(((
116 116  1) ISP: upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run.
143 +)))
117 117  
145 +(((
118 118  2) Flash: work mode, device starts to work and send out console output for further debug
147 +)))
119 119  
120 120  
121 121  
122 122  === 1.5.3 Reset Button ===
123 123  
153 +
124 124  Press to reboot the device.
125 125  
126 126  
... ... @@ -127,6 +127,7 @@
127 127  
128 128  === 1.5.4 LED ===
129 129  
160 +
130 130  It will flash:
131 131  
132 132  1. When boot the device in flash mode
... ... @@ -133,8 +133,11 @@
133 133  1. Send an uplink packet
134 134  
135 135  
167 +
168 +
136 136  = 2.  Use N95S31B to communicate with IoT Server =
137 137  
171 +
138 138  == 2.1  How it works ==
139 139  
140 140  
... ... @@ -151,7 +151,7 @@
151 151  
152 152  )))
153 153  
154 -[[image:1657350248151-650.png]]
188 +[[image:1657520100595-569.png]]
155 155  
156 156  (((
157 157  
... ... @@ -167,26 +167,49 @@
167 167  [[image:image-20220709150546-2.png]]
168 168  
169 169  
204 +
170 170  === 2.2.1 Test Requirement ===
171 171  
172 172  
208 +(((
173 173  To use N95S31B in your city, make sure meet below requirements:
210 +)))
174 174  
175 -* Your local operator has already distributed a NB-IoT Network there.
176 -* The local NB-IoT network used the band that N95S31B supports.
177 -* Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
212 +* (((
213 +Your local operator has already distributed a NB-IoT Network there.
214 +)))
215 +* (((
216 +The local NB-IoT network used the band that N95S31B supports.
217 +)))
218 +* (((
219 +Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
220 +)))
178 178  
222 +(((
179 179  Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.
224 +)))
180 180  
226 +(((
181 181  N95S31B supports different communication protocol such as :
228 +)))
182 182  
183 183  (((
184 -* CoAP  ((% style="color:red" %)120.24.4.116:5683(%%))
185 -* raw UDP  ((% style="color:red" %)120.24.4.116:5601(%%))
186 -* MQTT  ((% style="color:red" %)120.24.4.116:1883(%%))
187 -* TCP  ((% style="color:red" %)120.24.4.116:5600(%%))
231 +* (((
232 +CoAP  ((% style="color:red" %)120.24.4.116:5683(%%))
233 +)))
234 +* (((
235 +raw UDP  ((% style="color:red" %)120.24.4.116:5601(%%))
236 +)))
237 +* (((
238 +MQTT  ((% style="color:red" %)120.24.4.116:1883(%%))
239 +)))
240 +* (((
241 +TCP  ((% style="color:red" %)120.24.4.116:5600(%%))
242 +)))
188 188  
244 +(((
189 189  We will show how to use with each protocol. The IP addresses above are our test server. User need to change to point their corresponding server.
246 +)))
190 190  
191 191  
192 192  )))
... ... @@ -197,6 +197,7 @@
197 197  
198 198  === 2.2.3  Insert SIM card ===
199 199  
257 +
200 200  (((
201 201  Insert the NB-IoT Card get from your provider.
202 202  )))
... ... @@ -212,14 +212,18 @@
212 212  
213 213  === 2.2.4  Connect USB – TTL to N95S31B to configure it ===
214 214  
273 +
215 215  (((
216 216  (((
217 217  User need to configure N95S31B via serial port to set the (% style="color:blue" %)**Server Address** / **Uplink Topic** (%%)to define where and how-to uplink packets. N95S31B support AT Commands, user can use a USB to TTL adapter to connect to N95S31B and use AT Commands to configure it, as below.
277 +
278 +
218 218  )))
219 219  )))
220 220  
221 221  [[image:1657351312545-300.png]]
222 222  
284 +
223 223  **Connection:**
224 224  
225 225   (% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
... ... @@ -243,8 +243,9 @@
243 243  
244 244  [[image:1657329814315-101.png]]
245 245  
308 +
246 246  (((
247 -(% style="color:red" %)Note: the valid AT Commands can be found at:  (%%)[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/N95S31B/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/N95S31B/]]
310 +(% style="color:red" %)**Note: the valid AT Commands can be found at:  **(%%)**[[https:~~/~~/www.dropbox.com/sh/mlpd6l05bogvaf6/AABwAJLMttqG7i~~-~~-AyZcQkoua?dl=0>>https://www.dropbox.com/sh/mlpd6l05bogvaf6/AABwAJLMttqG7i--AyZcQkoua?dl=0]]**
248 248  )))
249 249  
250 250  
... ... @@ -251,9 +251,10 @@
251 251  
252 252  === 2.2.5  Use CoAP protocol to uplink data ===
253 253  
254 -(% style="color:red" %)Note: if you don't have CoAP server, you can refer this link to set up one: (%%)[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/>>http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]]
255 255  
318 +(% style="color:red" %)**Note: if you don't have CoAP server, you can refer this link to set up one: **(%%)**[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/>>http://wiki.dragino.com/xwiki/bin/view/Main/Set%20up%20CoAP%20Server/]]**
256 256  
320 +
257 257  (((
258 258  **Use below commands:**
259 259  )))
... ... @@ -292,6 +292,8 @@
292 292  * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5601   ** (%%) ~/~/ to set UDP server address and port
293 293  * (% style="color:blue" %)**AT+CFM=1       ** (%%) ~/~/ If the server does not respond, this command is unnecessary
294 294  
359 +
360 +
295 295  [[image:1657352391268-297.png]]
296 296  
297 297  
... ... @@ -301,6 +301,7 @@
301 301  
302 302  === 2.2.7  Use MQTT protocol to uplink data ===
303 303  
370 +
304 304  N95S31B supports only plain MQTT now it doesn't support TLS and other related encryption.
305 305  
306 306  * (% style="color:blue" %)**AT+PRO=3   ** (%%) ~/~/Set to use MQTT protocol to uplink
... ... @@ -311,11 +311,14 @@
311 311  * (% style="color:blue" %)**AT+PUBTOPIC=f9527                               **(%%)~/~/Set the sending topic of MQTT
312 312  * (% style="color:blue" %)**AT+SUBTOPIC=Ns9527          **(%%) ~/~/Set the subscription topic of MQTT
313 313  
381 +
382 +
314 314  [[image:1657352634421-276.png]]
315 315  
316 316  
317 317  [[image:1657352645687-385.png]]
318 318  
388 +
319 319  (((
320 320  To save battery life, N95S31B will establish a subscription before each uplink and close the subscription 3 seconds after uplink successful. Any downlink commands from server will only arrive during the subscription period.
321 321  )))
... ... @@ -329,11 +329,14 @@
329 329  
330 330  === 2.2.8  Use TCP protocol to uplink data ===
331 331  
402 +
332 332  This feature is supported since firmware version v110
333 333  
334 334  * (% style="color:blue" %)**AT+PRO=4   ** (%%) ~/~/ Set to use TCP protocol to uplink
335 335  * (% style="color:blue" %)**AT+SERVADDR=120.24.4.116,5600   **(%%) ~/~/ to set TCP server address and port
336 336  
408 +
409 +
337 337  [[image:1657352898400-901.png]]
338 338  
339 339  
... ... @@ -343,6 +343,7 @@
343 343  
344 344  === 2.2.9  Change Update Interval ===
345 345  
419 +
346 346  User can use below command to change the (% style="color:green" %)**uplink interval**.
347 347  
348 348  * (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
... ... @@ -356,53 +356,88 @@
356 356  == 2.3  Uplink Payload ==
357 357  
358 358  
359 -NBSN95 has different working mode for the connections of different type of sensors. This section describes these modes. User can use the AT Command (% style="color:blue" %)**AT+MOD**(%%) to set NBSN95 to different working modes.
433 +(((
434 +N95S31B has different working mode for the connections of different type of sensors. This section describes these modes. User can use the AT Command (% style="color:blue" %)**AT+MOD**(%%) to set NBSN95 to different working modes.
435 +)))
360 360  
361 361  
438 +(((
362 362  For example:
440 +)))
363 363  
364 - (% style="color:blue" %)**AT+CFGMOD=2 ** (%%)~/~/will set the NBSN95 to work in MOD=2 distance mode which target to measure distance via Ultrasonic Sensor.
442 +(((
443 + (% style="color:blue" %)**AT+CFGMOD=2 ** (%%)~/~/will set the N95S31B to work in MOD=2 distance mode which target to measure distance via Ultrasonic Sensor.
444 +)))
365 365  
366 366  
447 +(((
367 367  The uplink payloads are composed in  ASCII String. For example:
449 +)))
368 368  
451 +(((
369 369  0a cd 00 ed 0a cc 00 00 ef 02 d2 1d (total 24 ASCII Chars) . Representative the actually payload:
453 +)))
370 370  
455 +(((
371 371  0x 0a cd 00 ed 0a cc 00 00 ef 02 d2 1d Total 12 bytes
457 +)))
372 372  
373 373  
460 +(((
374 374  (% style="color:red" %)**NOTE:**
462 +)))
375 375  
376 376  (% style="color:red" %)
377 -1. All modes share the same Payload Explanation from [[HERE>>path:#Payload_Explain]].
378 -1. By default, the device will send an uplink message every 1 hour.
465 +1. (((
466 +**All modes share the same Payload Explanation from [[HERE>>||anchor="H2.3A0UplinkPayload"]].**
467 +)))
468 +1. (((
469 +**By default, the device will send an uplink message every 1 hour.**
379 379  
380 380  
381 381  
473 +
474 +)))
475 +
382 382  === 2.3.1  Payload Analyze ===
383 383  
478 +
384 384  N95S31B uplink payload includes in total 21 bytes
385 385  
386 386  
387 -(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:440px" %)
482 +(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:520px" %)
388 388  |=(% style="width: 60px;" %)(((
389 389  **Size(bytes)**
390 -)))|=(% style="width: 60px;" %)**6**|=(% style="width: 35px;" %)2|=(% style="width: 35px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 80px;" %) |=(% style="width: 99px;" %) |=(% style="width: 77px;" %)**2**|=(% style="width: 60px;" %)**1**
391 -|(% style="width:97px" %)**Value**|(% style="width:83px" %)[[Device ID>>||anchor="H2.4.1A0A0DeviceID"]]|(% style="width:41px" %)[[Ver>>||anchor="H2.4.2A0VersionInfo"]]|(% style="width:46px" %)[[BAT>>||anchor="H2.4.3A0BatteryInfo"]]|(% style="width:123px" %)[[Signal Strength>>||anchor="H2.4.4A0SignalStrength"]]|(% style="width:123px" %)MOD 0X01|(% style="width:99px" %)(((
485 +)))|=(% style="width: 50px;" %)**6**|=(% style="width: 25px;" %)2|=(% style="width: 25px;" %)**2**|=(% style="width: 70px;" %)**1**|=(% style="width: 55px;" %)1|=(% style="width: 115px;" %)5|=(% style="width: 60px;" %)**2**|=(% style="width: 60px;" %)**2**
486 +|(% style="width:97px" %)**Value**|(% style="width:83px" %)[[Device ID>>||anchor="H2.3.2A0DeviceID"]]|(% style="width:41px" %)[[Ver>>||anchor="H2.3.3A0VersionInfo"]]|(% style="width:46px" %)[[BAT>>||anchor="H2.3.4A0BatteryInfo"]]|(% style="width:123px" %)[[Signal Strength>>||anchor="H2.3.5A0SignalStrength"]]|(% style="width:123px" %)MOD 0X01|(% style="width:99px" %)(((
487 +(((
392 392  Reserve/ Same as NBSN95 CFGMOD=1
489 +)))
393 393  
491 +(((
394 394  No function here.
493 +)))
395 395  )))|(% style="width:77px" %)(((
396 -[[Temperature >>||anchor="H2.4.5A0Distance"]]
495 +(((
496 +[[Temperature >>||anchor="H2.3.6A0Temperature26Humidity"]]
497 +)))
397 397  
499 +(((
398 398  By SHT31
501 +)))
399 399  )))|(% style="width:80px" %)(((
400 -[[Humidity>>||anchor="H2.4.6A0DigitalInterrupt"]]
503 +(((
504 +[[Humidity>>||anchor="H2.3.6A0Temperature26Humidity"]]
505 +)))
401 401  
507 +(((
402 402  By SHT31
403 403  )))
510 +)))
404 404  
405 405  (((
513 +
514 +
406 406  (((
407 407  If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NB sensor uplink data.
408 408  )))
... ... @@ -435,6 +435,7 @@
435 435  
436 436  === 2.3.2  Device ID ===
437 437  
547 +
438 438  (((
439 439  By default, the Device ID equal to the last 6 bytes of IMEI.
440 440  )))
... ... @@ -460,14 +460,25 @@
460 460  === 2.3.3  Version Info ===
461 461  
462 462  
573 +(((
463 463  These bytes include the hardware and software version.
575 +)))
464 464  
577 +(((
465 465  Higher byte: Specify hardware version: always 0x00 for N95S31B
579 +)))
466 466  
581 +(((
467 467  Lower byte: Specify the software version: 0x6E=110, means firmware version 110
583 +)))
468 468  
585 +(((
586 +
587 +)))
469 469  
589 +(((
470 470  For example: 0x00 6E: this device is N95S31B with firmware version 110.
591 +)))
471 471  
472 472  (((
473 473  
... ... @@ -476,6 +476,7 @@
476 476  
477 477  === 2.3.4  Battery Info ===
478 478  
600 +
479 479  (((
480 480  Ex1: 0x0B45 = 2885mV
481 481  )))
... ... @@ -488,6 +488,7 @@
488 488  
489 489  === 2.3.5  Signal Strength ===
490 490  
613 +
491 491  (((
492 492  NB-IoT Network signal Strength.
493 493  )))
... ... @@ -520,6 +520,7 @@
520 520  
521 521  === 2.3.6  Temperature & Humidity ===
522 522  
646 +
523 523  The device will be able to get the SHT31 temperature and humidity data now and upload to IoT Server.
524 524  
525 525  [[image:image-20220709161741-3.png]]
... ... @@ -538,8 +538,9 @@
538 538  
539 539  == 2.4  Downlink Payload ==
540 540  
541 -By default, NDDS75 prints the downlink payload to console port.
542 542  
666 +By default, N95S31B prints the downlink payload to console port.
667 +
543 543  [[image:image-20220709100028-1.png]]
544 544  
545 545  
... ... @@ -576,7 +576,7 @@
576 576  )))
577 577  
578 578  (((
579 -If payload = 0x04FF, it will reset the NDDS75
704 +If payload = 0x04FF, it will reset the N95S31B
580 580  )))
581 581  
582 582  
... ... @@ -590,6 +590,7 @@
590 590  
591 591  == 2.5  ​Battery Analysis ==
592 592  
718 +
593 593  === 2.5.1  ​Battery Type ===
594 594  
595 595  
... ... @@ -617,8 +617,9 @@
617 617  
618 618  === 2.5.2  Power consumption Analyze ===
619 619  
746 +
620 620  (((
621 -The file **DRAGINO_N95S31B-Power-Analyzer.pdf** from [[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/N95S31B/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/N95S31B/]] describes a detail measurement to analyze the power consumption in different case. User can use it for design guideline for their project.
748 +The file **DRAGINO_N95S31B-Power-Analyzer.pdf** from [[https:~~/~~/www.dropbox.com/sh/mlpd6l05bogvaf6/AABwAJLMttqG7i~~-~~-AyZcQkoua?dl=0>>https://www.dropbox.com/sh/mlpd6l05bogvaf6/AABwAJLMttqG7i--AyZcQkoua?dl=0]] describes a detail measurement to analyze the power consumption in different case. User can use it for design guideline for their project.
622 622  )))
623 623  
624 624  (((
... ... @@ -628,6 +628,7 @@
628 628  
629 629  === 2.5.3  ​Battery Note ===
630 630  
758 +
631 631  (((
632 632  The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to uplink data, then the battery life may be decreased.
633 633  )))
... ... @@ -650,6 +650,7 @@
650 650  
651 651  = 3. ​ Access NB-IoT Module =
652 652  
781 +
653 653  (((
654 654  Users can directly access the AT command set of the NB-IoT module.
655 655  )))
... ... @@ -656,6 +656,8 @@
656 656  
657 657  (((
658 658  The AT Command set can refer the BC35-G NB-IoT Module AT Command: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/>>url:https://www.dragino.com/downloads/index.php?dir=datasheet/other_vendors/BC35-G/]] 
788 +
789 +
659 659  )))
660 660  
661 661  [[image:1657333200519-600.png]]
... ... @@ -664,11 +664,13 @@
664 664  
665 665  = 4.  Using the AT Commands =
666 666  
798 +
667 667  == 4.1  Access AT Commands ==
668 668  
669 -See NBSN95 AT Command in this link for detail:  [[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NBSN95/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/NBSN95/]]
670 670  
802 +See NBSN95 AT Command in this link for detail:  [[https:~~/~~/www.dropbox.com/sh/jao1xt9kw5r3yq4/AAAMpJkZzExF2JLbRWxGoQ9Na?dl=0>>https://www.dropbox.com/sh/jao1xt9kw5r3yq4/AAAMpJkZzExF2JLbRWxGoQ9Na?dl=0]]
671 671  
804 +
672 672  AT+<CMD>?  : Help on <CMD>
673 673  
674 674  AT+<CMD>         : Run <CMD>
... ... @@ -742,6 +742,7 @@
742 742  
743 743  = ​5.  FAQ =
744 744  
878 +
745 745  == 5.1 ​ How to Upgrade Firmware ==
746 746  
747 747  
... ... @@ -756,13 +756,16 @@
756 756  (((
757 757  
758 758  
759 -(% style="color:red" %)Notice, N95S31B and LSN50v2 share the same mother board. They use the same connection and method to update.
893 +(((
894 +(% style="color:red" %)**Notice, N95S31B and LSN50v2 share the same mother board. They use the same connection and method to update.**
760 760  )))
896 +)))
761 761  
762 762  
763 763  
764 764  = 6.  Trouble Shooting =
765 765  
902 +
766 766  == 6.1  ​Connection problem when uploading firmware ==
767 767  
768 768  
... ... @@ -778,6 +778,7 @@
778 778  
779 779  == 6.2  AT Command input doesn't work ==
780 780  
918 +
781 781  (((
782 782  In the case if user can see the console output but can't type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn't send (% style="color:green" %)**ENTER**(%%) while press the send key, user need to add ENTER in their string.
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827 827  
828 828  = 9.  Support =
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830 830  * 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.
831 831  * 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]]
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