<
From version < 104.2 >
edited by Xiaoling
on 2022/09/09 10:26
To version < 100.1 >
edited by Xiaoling
on 2022/07/11 14:11
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -16,7 +16,6 @@
16 16  
17 17  = 1.  Introduction =
18 18  
19 -
20 20  == 1.1 ​ What is NDDS75 Distance Detection Sensor ==
21 21  
22 22  (((
... ... @@ -57,7 +57,6 @@
57 57  
58 58  == 1.2 ​ Features ==
59 59  
60 -
61 61  * NB-IoT Bands: B1/B3/B8/B5/B20/B28 @H-FDD
62 62  * Ultra low power consumption
63 63  * Distance Detection by Ultrasonic technology
... ... @@ -72,9 +72,9 @@
72 72  * 8500mAh Battery for long term use
73 73  
74 74  
73 +
75 75  == 1.3  Specification ==
76 76  
77 -
78 78  (% style="color:#037691" %)**Common DC Characteristics:**
79 79  
80 80  * Supply Voltage: 2.1v ~~ 3.6v
... ... @@ -103,9 +103,9 @@
103 103  * Max transmit power: 350mA@3.3v
104 104  
105 105  
104 +
106 106  == ​1.4  Applications ==
107 107  
108 -
109 109  * Smart Buildings & Home Automation
110 110  * Logistics and Supply Chain Management
111 111  * Smart Metering
... ... @@ -117,8 +117,6 @@
117 117  ​
118 118  
119 119  
120 -
121 -
122 122  == 1.5  Pin Definitions ==
123 123  
124 124  
... ... @@ -128,10 +128,8 @@
128 128  
129 129  = 2.  Use NDDS75 to communicate with IoT Server =
130 130  
131 -
132 132  == 2.1  How it works ==
133 133  
134 -
135 135  (((
136 136  The NDDS75 is equipped with a NB-IoT module, the pre-loaded firmware in NDDS75 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 NDDS75.
137 137  )))
... ... @@ -157,7 +157,6 @@
157 157  
158 158  === 2.2.1 Test Requirement ===
159 159  
160 -
161 161  (((
162 162  To use NDDS75 in your city, make sure meet below requirements:
163 163  )))
... ... @@ -167,7 +167,7 @@
167 167  * Your operator is able to distribute the data received in their NB-IoT network to your IoT server.
168 168  
169 169  (((
170 -Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.  The NDDS75 will use CoAP((% style="color:red" %)120.24.4.116:5683)(%%) or raw UDP((% style="color:red" %)120.24.4.116:5601)(%%) or MQTT((% style="color:red" %)120.24.4.116:1883)(%%)or TCP((% style="color:red" %)120.24.4.116:5600)(%%)protocol to send data to the test server.
163 +Below figure shows our testing structure. Here we have NB-IoT network coverage by China Mobile, the band they use is B8.  The NDDS75 will use CoAP((% style="color:red" %)120.24.4.116:5683)(%%) or raw UDP((% style="color:red" %)120.24.4.116:5601)(%%) or MQTT((% style="color:red" %)120.24.4.116:1883)(%%)or TCP((% style="color:red" %)120.24.4.116:5600)(%%)protocol to send data to the test server
171 171  )))
172 172  
173 173  
... ... @@ -177,7 +177,6 @@
177 177  
178 178  === 2.2.2 Insert SIM card ===
179 179  
180 -
181 181  (((
182 182  Insert the NB-IoT Card get from your provider.
183 183  )))
... ... @@ -193,7 +193,6 @@
193 193  
194 194  === 2.2.3 Connect USB – TTL to NDDS75 to configure it ===
195 195  
196 -
197 197  (((
198 198  (((
199 199  User need to configure NDDS75 via serial port to set the (% style="color:blue" %)**Server Address** / **Uplink Topic** (%%)to define where and how-to uplink packets. NDDS75 support AT Commands, user can use a USB to TTL adapter to connect to NDDS75 and use AT Commands to configure it, as below.
... ... @@ -202,7 +202,6 @@
202 202  
203 203  [[image:image-20220709092052-2.png]]
204 204  
205 -
206 206  **Connection:**
207 207  
208 208   (% style="background-color:yellow" %)USB TTL GND <~-~-~-~-> GND
... ... @@ -226,9 +226,8 @@
226 226  
227 227  [[image:1657329814315-101.png]]
228 228  
229 -
230 230  (((
231 -(% style="color:red" %)**Note: the valid AT Commands can be found at: **(%%)**[[https:~~/~~/www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0>>https://www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0]]**
220 +(% style="color:red" %)Note: the valid AT Commands can be found at: (%%)[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/]]
232 232  )))
233 233  
234 234  
... ... @@ -235,10 +235,9 @@
235 235  
236 236  === 2.2.4 Use CoAP protocol to uplink data ===
237 237  
227 +(% 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/]]
238 238  
239 -(% 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/]]**
240 240  
241 -
242 242  (((
243 243  **Use below commands:**
244 244  )))
... ... @@ -251,25 +251,17 @@
251 251  )))
252 252  * (((
253 253  (% style="color:blue" %)**AT+URI=5,11,"mqtt",11,"coap",12,"0",15,"c=text1",23,"0" ** (%%) ~/~/Set COAP resource path
254 -
255 -
256 -
257 257  )))
258 258  
259 259  (((
260 260  For parameter description, please refer to AT command set
261 -
262 -
263 263  )))
264 264  
265 265  [[image:1657330452568-615.png]]
266 266  
267 267  
268 -
269 269  (((
270 270  After configure the server address and (% style="color:green" %)**reset the device**(%%) (via AT+ATZ ), NDDS75 will start to uplink sensor values to CoAP server.
271 -
272 -
273 273  )))
274 274  
275 275  [[image:1657330472797-498.png]]
... ... @@ -328,31 +328,25 @@
328 328  
329 329  === 2.2.8 Change Update Interval ===
330 330  
331 -
332 332  User can use below command to change the (% style="color:green" %)**uplink interval**.
333 333  
334 334  * (% style="color:blue" %)**AT+TDC=600      ** (%%)~/~/ Set Update Interval to 600s
335 335  
336 336  (((
337 -(% style="color:red" %)**NOTE 1: By default, the device will send an uplink message every 1 hour.**
316 +(% style="color:red" %)**NOTE:**
317 +)))
338 338  
339 -
319 +(((
320 +(% style="color:red" %)1. By default, the device will send an uplink message every 1 hour.
340 340  )))
341 341  
342 -(% style="color:red" %)**NOTE 2: When the firmware version is v1.3.2 and later firmware:**
343 343  
344 -(% style="color:red" %)**By default, the device will send an uplink message every 2 hours. Each Uplink Include 8 set of records in this 2 hour (15 minute interval / record).**
345 345  
346 -
347 -
348 348  == 2.3  Uplink Payload ==
349 349  
350 -
351 -=== 2.3.1  Before Firmware 1.3.2 ===
352 -
353 -
354 354  In this mode, uplink payload includes in total 14 bytes
355 355  
329 +
356 356  (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:440px" %)
357 357  |=(% style="width: 60px;" %)(((
358 358  **Size(bytes)**
... ... @@ -366,9 +366,8 @@
366 366  
367 367  [[image:1657331036973-987.png]]
368 368  
369 -
370 370  (((
371 -The payload is **ASCII** string, representative same HEX:
344 +The payload is ASCII string, representative same HEX:
372 372  )))
373 373  
374 374  (((
... ... @@ -379,11 +379,11 @@
379 379  Device ID: 0x724031556159 = 724031556159
380 380  )))
381 381  * (((
382 -Version:  0x0064=100=1.0.0
355 +Version: 0x0064=100=1.0.0
383 383  )))
384 384  
385 385  * (((
386 -BAT:  0x0c6c = 3180 mV = 3.180V
359 +BAT: 0x0c6c = 3180 mV = 3.180V
387 387  )))
388 388  * (((
389 389  Signal: 0x19 = 25
... ... @@ -396,48 +396,14 @@
396 396  
397 397  
398 398  
399 -
400 400  
401 401  )))
402 402  
403 -=== **2.3.2  Since firmware v1.3.2** ===
404 -
405 -
406 -In this mode, uplink payload includes 69 bytes in total by default.
407 -
408 -Each time the device uploads a data package, 8 sets of recorded data will be attached. Up to 32 sets of recorded data can be uploaded.
409 -
410 -(% border="2" style="background-color:#ffffcc; color:green; width:896px" %)
411 -|(% style="width:95px" %)**Size(bytes)**|(% style="width:84px" %)**8**|(% style="width:44px" %)2|(% style="width:48px" %)2|(% style="width:123px" %)1|(% style="width:55px" %)1|(% style="width:80px" %)1|(% style="width:77px" %)2|(% style="width:94px" %)4|(% style="width:77px" %)2|(% style="width:116px" %)4
412 -|(% style="width:95px" %)**Value**|(% style="width:84px" %)Device ID|(% style="width:44px" %)Ver|(% style="width:48px" %)BAT|(% style="width:123px" %)Signal Strength|(% style="width:55px" %)MOD|(% style="width:80px" %)Interrupt|(% style="width:77px" %)Distance|(% style="width:94px" %)Timestamp|(% style="width:77px" %)Distance|(% style="width:116px" %)Timestamp.......
413 -
414 -If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NDDS75 uplink data.
415 -
416 -[[image:image-20220908175246-1.png]]
417 -
418 -
419 -The payload is ASCII string, representative same HEX:
420 -
421 -0x(% style="color:red" %)f867787050213317(% style="color:blue" %)0084(% style="color:green" %)0cf4(% style="color:red" %)1e(% style="color:blue" %)01(% style="color:green" %)00(% style="color:red" %)**//00396319bb32//**00396319baf0//**00396319ba3c**//00396319b988//**00396319b8d4**//00396319b820//**00396319b76c**//00396319b6b8//**00396319b604**//(%%) where:
422 -
423 -* (% style="color:green" %)Device ID: f867787050213317 = f867787050213317
424 -* (% style="color:red" %)Version: 0x0084=132=1.3.2
425 -* (% style="color:green" %)BAT: 0x0cf4 = 3316 mV = 3.316V
426 -* (% style="color:blue" %)Singal: 0x1e = 30
427 -* (% style="color:red" %)Mod: 0x01 = 1
428 -* Interrupt: 0x00= 0
429 -* Distance: 0x0039= 57 = 57
430 -* Time stamp : 0x6315537b =1662342011  ([[Unix Epoch Time>>url:http://www.epochconverter.com/]])
431 -* Distance,Time stamp : 00396319baf0
432 -* (% style="color:red" %) 8 sets of recorded data: Distance,Time stamp : //**00396319ba3c**//,.......
433 -
434 -
435 435  == 2.4  Payload Explanation and Sensor Interface ==
436 436  
437 437  
438 438  === 2.4.1  Device ID ===
439 439  
440 -
441 441  (((
442 442  By default, the Device ID equal to the last 6 bytes of IMEI.
443 443  )))
... ... @@ -444,12 +444,10 @@
444 444  
445 445  (((
446 446  User can use (% style="color:blue" %)**AT+DEUI**(%%) to set Device ID
447 -
448 -
449 449  )))
450 450  
451 451  (((
452 -(% style="color:blue" %)**Example :**
389 +**Example:**
453 453  )))
454 454  
455 455  (((
... ... @@ -457,26 +457,13 @@
457 457  )))
458 458  
459 459  (((
460 -The Device ID is stored in a none-erase area, Upgrade the firmware or run (% style="color:blue" %)**AT+FDR**(%%) won't erase Device ID.
397 +The Device ID is stored in a none-erase area, Upgrade the firmware or run **AT+FDR** won't erase Device ID.
461 461  )))
462 462  
463 463  
464 -(% style="color:red" %)**NOTE: When the firmware version is v1.3.2 and later firmware:**
465 465  
466 -(% style="color:red" %)**By default, the Device ID equal to the last 15 bits of IMEI.**
467 -
468 -User can use (% style="color:blue" %)**AT+DEUI**(%%) to set Device ID
469 -
470 -
471 -(% style="color:blue" %)**Example :**
472 -
473 -AT+DEUI=868411056754138
474 -
475 -
476 -
477 477  === 2.4.2  Version Info ===
478 478  
479 -
480 480  (((
481 481  Specify the software version: 0x64=100, means firmware version 1.00.
482 482  )))
... ... @@ -489,7 +489,6 @@
489 489  
490 490  === 2.4.3  Battery Info ===
491 491  
492 -
493 493  (((
494 494  Ex1: 0x0B45 = 2885mV
495 495  )))
... ... @@ -502,7 +502,6 @@
502 502  
503 503  === 2.4.4  Signal Strength ===
504 504  
505 -
506 506  (((
507 507  NB-IoT Network signal Strength.
508 508  )))
... ... @@ -535,7 +535,6 @@
535 535  
536 536  === 2.4.5  Distance ===
537 537  
538 -
539 539  Get the distance. Flat object range 280mm - 7500mm.
540 540  
541 541  (((
... ... @@ -558,7 +558,6 @@
558 558  
559 559  === 2.4.6  Digital Interrupt ===
560 560  
561 -
562 562  (((
563 563  Digital Interrupt refers to pin (% style="color:blue" %)**GPIO_EXTI**(%%), and there are different trigger methods. When there is a trigger, the NDDS75 will send a packet to the server.
564 564  )))
... ... @@ -593,7 +593,6 @@
593 593  
594 594  === 2.4.7  ​+5V Output ===
595 595  
596 -
597 597  (((
598 598  NDDS75 will enable +5V output before all sampling and disable the +5v after all sampling. 
599 599  )))
... ... @@ -601,14 +601,10 @@
601 601  
602 602  (((
603 603  The 5V output time can be controlled by AT Command.
604 -
605 -
606 606  )))
607 607  
608 608  (((
609 609  (% style="color:blue" %)**AT+5VT=1000**
610 -
611 -
612 612  )))
613 613  
614 614  (((
... ... @@ -619,7 +619,6 @@
619 619  
620 620  == 2.5  Downlink Payload ==
621 621  
622 -
623 623  By default, NDDS75 prints the downlink payload to console port.
624 624  
625 625  [[image:image-20220709100028-1.png]]
... ... @@ -670,55 +670,9 @@
670 670  
671 671  
672 672  
673 -== 2.6  Distance alarm function(Since firmware v1.3.2) ==
587 +== 2.6  ​LED Indicator ==
674 674  
675 675  
676 -(% style="color:blue" %)** ➢ AT Command:**
677 -
678 -(% style="color:#037691" %)** AT+ LDDSALARM=min,max**
679 -
680 -² When min=0, and max≠0, Alarm higher than max
681 -
682 -² When min≠0, and max=0, Alarm lower than min
683 -
684 -² When min≠0 and max≠0, Alarm higher than max or lower than min
685 -
686 -
687 -(% style="color:blue" %)** Example:**
688 -
689 -**AT+ LDDSALARM=260,2000**  ~/~/ Alarm when distance lower than 260.
690 -
691 -
692 -
693 -== 2.7  Set the number of data to be uploaded and the recording time ==
694 -
695 -
696 -(% style="color:blue" %)** ➢ AT Command:**
697 -
698 -(% style="color:#037691" %)** AT+TR=900** (%%) ~/~/ The unit is seconds, and the default is to record data once every 900 seconds.( The minimum can be set to 180 seconds)
699 -
700 -(% style="color:#037691" %)** AT+NOUD=8** (%%) ~/~/  The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
701 -
702 -
703 -
704 -== 2.8  Read or Clear cached data ==
705 -
706 -
707 -(% style="color:blue" %)** ➢ AT Command:**
708 -
709 -(% style="color:#037691" %)** AT+CDP ** (%%) ~/~/ Read cached data
710 -
711 -
712 -[[image:image-20220908175333-2.png]]
713 -
714 -
715 -(% style="color:#037691" %)** AT+CDP=0**  (%%) ~/~/ Clear cached data
716 -
717 -
718 -
719 -== 2.9  ​LED Indicator ==
720 -
721 -
722 722  The NDDS75 has an internal LED which is to show the status of different state.
723 723  
724 724  
... ... @@ -733,29 +733,29 @@
733 733  
734 734  
735 735  
736 -== 2.10  ​Firmware Change Log ==
604 +== 2.7  ​Firmware Change Log ==
737 737  
738 738  
739 739  (((
740 -Download URL & Firmware Change log:  [[https:~~/~~/www.dropbox.com/sh/3hb94r49iszmstx/AADvSJcXxahEUfxqKWVnZx-La?dl=0>>https://www.dropbox.com/sh/3hb94r49iszmstx/AADvSJcXxahEUfxqKWVnZx-La?dl=0]]
608 +Download URL & Firmware Change log
741 741  )))
742 742  
743 743  (((
744 -
612 +[[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/Firmware/>>url:https://www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/Firmware/]]
745 745  )))
746 746  
615 +
747 747  (((
748 -Upgrade Instruction: [[Upgrade Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
617 +Upgrade Instruction: [[Upgrade_Firmware>>||anchor="H5.1200BHowtoUpgradeFirmware"]]
749 749  )))
750 750  
751 751  
752 752  
753 -== 2.11  ​Battery Analysis ==
622 +== 2.8  ​Battery Analysis ==
754 754  
624 +=== 2.8.1  ​Battery Type ===
755 755  
756 -=== 2.11.1  ​Battery Type ===
757 757  
758 -
759 759  (((
760 760  The NDDS75 battery is a combination of an 8500mAh Li/SOCI2 Battery and a Super Capacitor. The battery is none-rechargeable battery type with a low discharge rate (<2% per year). This type of battery is commonly used in IoT devices such as water meter.
761 761  )))
... ... @@ -778,9 +778,8 @@
778 778  
779 779  
780 780  
781 -=== 2.11.2  Power consumption Analyze ===
649 +=== 2.8.2  Power consumption Analyze ===
782 782  
783 -
784 784  (((
785 785  Dragino battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval.
786 786  )))
... ... @@ -817,9 +817,8 @@
817 817  
818 818  
819 819  
820 -=== 2.11.3  ​Battery Note ===
687 +=== 2.8.3  ​Battery Note ===
821 821  
822 -
823 823  (((
824 824  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 transmit LoRa, then the battery life may be decreased.
825 825  )))
... ... @@ -826,9 +826,8 @@
826 826  
827 827  
828 828  
829 -=== 2.11.4  Replace the battery ===
695 +=== 2.8.4  Replace the battery ===
830 830  
831 -
832 832  (((
833 833  The default battery pack of NDDS75 includes a ER26500 plus super capacitor. If user can't find this pack locally, they can find ER26500 or equivalence without the SPC1520 capacitor, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes).
834 834  )))
... ... @@ -837,7 +837,6 @@
837 837  
838 838  = 3. ​ Access NB-IoT Module =
839 839  
840 -
841 841  (((
842 842  Users can directly access the AT command set of the NB-IoT module.
843 843  )))
... ... @@ -844,8 +844,6 @@
844 844  
845 845  (((
846 846  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/]] 
847 -
848 -
849 849  )))
850 850  
851 851  [[image:1657333200519-600.png]]
... ... @@ -854,13 +854,11 @@
854 854  
855 855  = 4.  Using the AT Commands =
856 856  
857 -
858 858  == 4.1  Access AT Commands ==
859 859  
721 +See this link for detail: [[https:~~/~~/www.dragino.com/downloads/index.php?dir=NB-IoT/NDDS75/>>url:http://www.dragino.com/downloads/index.php?dir=NB-IoT/NBSN50/]]
860 860  
861 -See this link for detail:  [[https:~~/~~/www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0>>https://www.dropbox.com/sh/aaq2xcl0bzfu0yd/AAAEAHRa7Io_465ds4Y7-F3aa?dl=0]]
862 862  
863 -
864 864  AT+<CMD>?  : Help on <CMD>
865 865  
866 866  AT+<CMD>         : Run <CMD>
... ... @@ -900,23 +900,7 @@
900 900  
901 901  AT+SERVADDR  : Server Address
902 902  
903 -AT+TR      : Get or Set record time"
904 904  
905 -AT+APN     : Get or set the APN
906 -
907 -AT+FBAND   : Get or Set whether to automatically modify the frequency band
908 -
909 -AT+DNSCFG  : Get or Set DNS Server
910 -
911 -AT+GETSENSORVALUE   : Returns the current sensor measurement
912 -
913 -AT+NOUD      : Get or Set the number of data to be uploaded
914 -
915 -AT+CDP     : Read or Clear cached data
916 -
917 -AT+LDDSALARM : Get or Set alarm of distance
918 -
919 -
920 920  (% style="color:#037691" %)**COAP Management**      
921 921  
922 922  AT+URI            : Resource parameters
... ... @@ -950,7 +950,6 @@
950 950  
951 951  = ​5.  FAQ =
952 952  
953 -
954 954  == 5.1 ​ How to Upgrade Firmware ==
955 955  
956 956  
... ... @@ -963,7 +963,7 @@
963 963  )))
964 964  
965 965  (((
966 -(% style="color:red" %)**Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update.**
809 +(% style="color:red" %)Notice, NDDS75 and LDDS75 share the same mother board. They use the same connection and method to update.
967 967  )))
968 968  
969 969  
... ... @@ -970,7 +970,6 @@
970 970  
971 971  = 6.  Trouble Shooting =
972 972  
973 -
974 974  == 6.1  ​Connection problem when uploading firmware ==
975 975  
976 976  
... ... @@ -986,7 +986,6 @@
986 986  
987 987  == 6.2  AT Command input doesn't work ==
988 988  
989 -
990 990  (((
991 991  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.
992 992  
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1019 1019  (((
1020 1020  
1021 1021  
1022 -
1023 1023  (% style="color:#037691" %)**Dimension and weight**:
1024 1024  
1025 1025  * Device Size: 13.0 x 5 x 4.5 cm
... ... @@ -1037,6 +1037,5 @@
1037 1037  
1038 1038  = 9.  Support =
1039 1039  
1040 -
1041 1041  * 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.
1042 1042  * 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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