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1 (% style="text-align:center" %)
2 [[image:image-20220616085956-1.jpeg||height="609" width="609"]]
3
4
5
6
7 **Table of Contents:**
8
9 {{toc/}}
10
11
12 (% class="wikigeneratedid" id="H" %)
13 (((
14
15 )))
16
17 = 1. Introduction =
18
19 == 1.1 What is PG1302 LoRaWAN Concentrator? ==
20
21
22 (((
23 The PG1302 is a (% style="color:blue" %)**multi-channel high-performance transmitter/receiver**(%%) designed to simultaneously receive several LoRa packets using random spreading factors on random channels. Its goal is to enable robust connection between a central wireless data concentrator and a massive amount of wireless end-points spread over a very wide range of distances.
24 )))
25
26 (((
27 The PG1302 is designed to use with Raspberry Pi to build smart metering fixed networks and Internet of Things applications with up to 5000 nodes per km2 in a moderately interfered environment.
28 )))
29
30 (((
31 PG1302 is fully compatible with (% style="color:blue" %)**RPi3/4 or Tinker Board**(%%), users can use the pre-build OS from Dragino to set up and easy to use the module by Web UI. Or install the raw LoRaWAN driver in the existing OS.
32 )))
33
34
35 == 1.2 Features ==
36
37
38 * Base on Semtech SX1302 solution
39 * Support Raspberry Pi 3B/3B+/4, TinkerBoard2/2S, Orange Pi Pc/PC PLUS.
40 * Up to -140dBm sensitivity
41 * Support 3.3v and 5v.
42 * Mini-PCIe Interface
43 * Converter board to support Raspberry Pi
44
45 == 1.3 General Interfaces for PG1302 ==
46
47
48 * SPI interface for LoRa
49 * Power Input: 5v, 1A
50 * 1 x I-PEX for LoRa
51 * Working Temperature: -40 ℃ ~~ 80℃
52
53 == 1.4 Pin Mapping ==
54
55
56 [[image:image-20240122140551-1.png]]
57
58
59 == 1.5 LEDs ==
60
61
62 (((
63 TX: Blink when transmit a packet
64 RX: Blink when receiving a packet
65 Config: Always ON
66 )))
67
68
69 == 1.6 Power Consumption ==
70
71
72 <300mA @ 3.3v.
73
74 Detail Test Report see [[this link>>https://www.dropbox.com/sh/89virm4y0b02c7i/AAA-cgQEsSc8gNGFYAB0qZ_Za?dl=0]]
75
76
77 == 1.7 Antenna Installation ==
78
79
80 Left:  **GPS antenna**
81
82 Right:  **LoRa Antenna**
83
84 [[image:https://www.thethingsnetwork.org/forum/uploads/default/original/3X/6/2/624619afa8d75a2c21bfd1e3687afaa75ad61cbc.jpeg||alt="PG1302_70"]]
85
86
87
88
89
90 == 1.8 Applications ==
91
92
93 * Smart Buildings & Home Automation
94 * Logistics and Supply Chain Management
95 * Smart Metering
96 * Smart Agriculture
97 * Smart Cities
98 * Smart Factory
99
100 = 2. Example: Set up as LoRaWAN gateway =
101
102 == 2.1 System structure ==
103
104
105 (((
106 This example is an example to show how to set up the PG1302 + RPi as a LoRaWAN gateway to use with [[TheThingsNetwork>>url:http://www.thethingsnetwork.org/]](TTN) LoRaWAN server. Set up method for other server are similar.
107
108
109 )))
110
111 [[image:1651743698677-436.png||height="457" width="686"]]
112
113
114 == 2.2 Hardware Installation ==
115
116
117 (% style="color:red" %)**Important Notice: Please power the RPI with 5V,3A cable.**
118
119 [[image:image-20220621104746-1.png||height="351" width="415"]]
120
121
122 = 3. Install the software. =
123
124
125 **Raspberry Pi 3B/3B+/4B/5B**
126
127 * Flash SD card with Dragino pre-build image which supports Web UI.
128 * Install [[Dragino-FWD>>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20All%20Gateway%20models/PG1302/#H5.2.2.A0Selecttheappropriatedeviceversiontodownload:]] in existing RPi OS.
129
130 **TinkerBoard2/2S, **
131
132 * Install [[Dragino-FWD>>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20All%20Gateway%20models/PG1302/#H5.2.2.A0Selecttheappropriatedeviceversiontodownload:]] in the existing OS.
133
134 **Orange Pi PC/PC PLUS.**
135
136 * Install [[Dragino-FWD>>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20All%20Gateway%20models/PG1302/#H5.2.2.A0Selecttheappropriatedeviceversiontodownload:]] in the existing OS.
137
138 = 4. Flash with pre-build image =
139
140 == 4.1 Download the dragino image for RPI ==
141
142
143 (((
144 Download PG1302_for_Rpi4_64_with_webui from: [[https:~~/~~/www.dropbox.com/sh/f6nbldh1qbspya5/AACgL6pDkwdBQO1BQqq_Nubwa?dl=0>>https://www.dropbox.com/sh/f6nbldh1qbspya5/AACgL6pDkwdBQO1BQqq_Nubwa?dl=0]]
145 )))
146
147
148 == 4.2 Flash the image to an SD card ==
149
150
151 Flash the image to the SD card:
152
153 [[image:1651744119133-233.png||height="373" width="621"]]
154
155
156 (% style="color:red" %)**Note: Download the flash tool following this link:**[[https:~~/~~/www.balena.io/etcher/>>https://www.balena.io/etcher/]]
157
158
159 == 4.3 Access the Linux console ==
160
161
162 (((
163 Connect the RPI Ethernet port to your router, RPi will obtain an IP address from your router. In the router's management portal, you should be able to find what IP address the router has assigned to the RPI. You can use this IP to connect the WEB UI or SSH access of RPI. Make sure your PC and the RPI is in the same network, then use a SSH tool (such as [[putty>>url:http://www.chiark.greenend.org.uk/~~sgtatham/putty/download.html]]) to access it. Below are screenshots
164 )))
165
166
167 [[image:1651744193675-591.png||height="450" width="466"]]
168
169 The account details for Web Login are:
170
171 (((
172 **~ (% style="color:#0000ff" %)User Name: root(%%)**
173 )))
174
175 (((
176 **~ (% style="color:#0000ff" %)Password:   dragino(%%)**
177 )))
178
179 (((
180
181 )))
182
183 (((
184 **~ (% style="color:#0000ff" %)Backup account(%%)**
185 )))
186
187 (((
188 **~ (% style="color:#0000ff" %)Pi/dragino(%%)**
189
190
191 )))
192
193 After logging in, you will be in the Linux console and type the command here.
194
195 [[image:1651744358515-107.png||height="366" width="581"]]
196
197
198 == 4.4 Access the WebUI of RPi4 ==
199
200 === 4.4.1 Home page ===
201
202
203 (((
204 Open a browser on the PC and type the RPI ip address **http:~/~/IP_ADDRESS ** (If the IP is assigned by the uplink router)
205 You will see the login interface of RPI as shown below.
206 The account details for Web Login are:
207 )))
208
209 (((
210 **~ (% style="color:#0000ff" %)User Name: root(%%)**
211 (% style="color:#0000ff" %)** Password:   dragino**
212
213
214 )))
215
216 [[image:1651744457761-993.png||height="352" width="621"]]
217
218
219 === 4.4.2 LoRa Page ===
220
221
222 This page shows the LoRa Radio Settings. There are a set of default frequency band according to LoRaWAN protocol, and user can customize the band* as well.
223
224
225 [[image:1651744554845-970.png||height="328" width="621"]]
226
227
228 Different PG1302 hardware version can support different frequency range:
229
230 * (% style="color:red" %)**868: valid frequency: 863Mhz ~~ 870Mhz. for bands EU868, RU864, IN865 or KZ865.**
231 * (% style="color:red" %)**915: valid frequency: 902Mhz ~~ 928Mhz. for bands US915, AU915, AS923 or KR920**
232
233 After user choose the frequency plan, he can see the actually frequency in used by checking the (% style="color:#037691" %)**page LogRead ~-~-> LoRa Log**
234
235 (% style="color:red" %)**Note *: [[See this instruction for how to customize frequency band>>doc:Main.How to customized LoRaWAN frequency band.WebHome]]**
236
237
238 === 4.4.3 LoRaWAN Page ===
239
240 ==== 4.4.3.1 Semtech UDP ====
241
242
243 [[image:1651744767914-283.png||height="352" width="621"]]
244
245
246 (% style="color:red" %)**Note *: [[See this instruction for how to configure TTN>>doc:Main.Notes for TTN.WebHome]].**
247
248
249 ==== 4.4.3.2 Basic Station ====
250
251
252 [[image:1651744890629-683.png||height="380" width="621"]]
253
254
255 (% style="color:red" %)**Note *: [[See this instruction for how to configure AWS-loT-Core>>doc:Main.AWS IoT Core for LoRaWAN.WebHome]].**
256
257
258 === 4.4.4 LogRead ===
259
260 ==== 4.4.4.1 LoRa Log ====
261
262
263 [[image:1651744955955-452.png||height="571" width="621"]]
264
265
266 Show the frequency for LoRa Radio and traffics.
267
268
269 ==== 4.4.4.2 System Log ====
270
271
272 Show system log.
273
274 [[image:1651745003470-264.png||height="477" width="621"]]
275
276
277 ==== 4.4.4.3 Record Log ====
278
279
280 **Record the system log.**
281
282 [[image:1651745069814-662.png||height="144" width="621"]]
283
284
285 = 5. Install stand-alone LoRa Packet Forwarder =
286
287 == 5.1 Choose the right installation package for your OS ==
288
289
290 (((
291 **draginofwd-32bit (RPI, Orange PI)**
292
293 **Download URL:** https:~/~/www.dragino.com/downloads/downloads/LoRa_Gateway/PG1302/software/draginofwd-32bit.deb
294
295 **Linux Command:** wget https:~/~/www.dragino.com/downloads/downloads/LoRa_Gateway/PG1302/software/draginofwd-32bit.deb && dpkg -i draginofwd-32bit.deb
296
297
298 **dragino-64bit (RPI, Orange PI)**
299
300 **Download URL: **https:~/~/www.dragino.com/downloads/downloads/LoRa_Gateway/PG1302/software/draginofwd-64bit.deb
301 )))
302
303 **Linux Command: **wget https:~/~/www.dragino.com/downloads/downloads/LoRa_Gateway/PG1302/software/draginofwd-64bit.deb && dpkg -i draginofwd-64bit.deb
304
305
306 **dragino-tiker-32bit (Tinker Board)**
307
308 **Download URL: **https:~/~/www.dragino.com/downloads/downloads/LoRa_Gateway/PG1302/software/draginofwd-tinker-32bit.deb
309
310 **Linux Command: **wget https:~/~/www.dragino.com/downloads/downloads/LoRa_Gateway/PG1302/software/draginofwd-tinker-32bit.deb && dpkg -i draginofwd-tinker-32bit.deb
311
312
313 **Install details:**
314
315 [[image:image-20220928181226-1.png||height="218" width="1100"]]
316
317
318 RPI in this example is RPI model 4B with fresh Raspbian OS install.
319
320 (% class="box" %)
321 (((
322 **~ pi@raspberrypi:~~$ cat /etc/os-release
323 PRETTY_NAME="Raspbian GNU/Linux 8 (jessie)"
324 NAME="Raspbian GNU/Linux"
325 VERSION_ID="8"
326 VERSION="8 (jessie)"
327 ID=raspbian
328 ID_LIKE=debian
329 HOME_URL="http:~/~/www.raspbian.org/"
330 SUPPORT_URL="http:~/~/www.raspbian.org/RaspbianForums"
331 BUG_REPORT_URL="http:~/~/www.raspbian.org/RaspbianBugs"**
332
333
334 )))
335
336
337 == 5.2 Select the mode of connection to the server ==
338
339
340 The Dragino LoRa Packet Forware supports the Semtech UDP and Basic Station mode.
341
342 The User can choose one of the methods as the connection mode.
343
344
345 **~1. Semtech UDP Mode  ~-~-> 5.2.1**
346
347 **2. Basic Station Mode  ~-~-> 5.2.2**
348
349
350 === 5.2.1 Semtech UDP Mode ===
351
352
353 ==== **a). Get a gateway EUI from the device ETH MAC.** ====
354
355
356 In RPI, run the below command to get a Gateway ID
357
358 (% class="box infomessage" %)
359 (((
360 **~ ifconfig eth0**
361 )))
362
363 [[image:1651745210205-512.png||height="130" width="621"]]
364
365
366 (((
367 (((
368 We got the ether (eth0 MAC) address is b8:27:eb:49:62:bc). Add ffff at the end and remove “:” to get the gateway ID: b827ebxxxxbcffff.  Input this to TTN v3. Make sure to select legacy packet forwarder.
369
370
371
372 ==== **b). Input this Gateway EUI to the TTN-Stack** ====
373
374
375 )))
376 )))
377
378 [[image:1651745267862-321.png||height="526" width="621"]]
379
380 [[image:1651745306744-481.png||height="478" width="621"]]
381
382
383
384 ==== **c). After Register, the status should show not connected as below:** ====
385
386
387 [[image:1651745366987-458.png||height="363" width="621"]]
388
389
390
391 ==== **d). Enable SPI and I2C on your device** ====
392
393
394 **the below example is using Raspberry 4B.**
395
396
397 Run (% style="background-color:yellow" %) **sudo raspi-config**(%%) to open the config window
398
399 [[image:1651745476754-240.png||height="234" width="629"]]
400
401
402 [[image:image-20220505181135-1.png]]
403
404
405 [[image:image-20220505181135-2.png||height="229" width="622"]]
406
407
408
409 ==== **e). Access the root account:** ====
410
411 (((
412 [[image:1651745583363-614.png||height="151" width="732"]]
413
414
415
416 )))
417
418 ==== **f). Modify the configuration of FWD** ====
419
420
421 (((
422 After installation, user can find the configuration file in** (% style="color:#0000ff" %)/etc/lora/ (%%)**Replace the gateway ID we got above to the (% style="color:#0000ff" %)**gateway_ID** (%%)in file (% style="color:#0000ff" %)**local_conf.json.**
423 )))
424
425 (((
426 The default LoRaWAN server points to localhost, user need to put the correct server address to the server_address field in file (% style="color:#0000ff" %)**local_conf.json**(%%), like below.
427
428
429 the User can find the lora configuration directory in (% style="color:#0000ff" %)**/etc/lora/**(%%) there are the cfg-302 directory and the global_conf.json, and local_conf.json files.
430
431 /etc/lora/
432 ├── cfg-302  ~-~--> global configuration file
433 ├── devskey  ~-~--> Database
434 ├── global_conf.json  ~-~--> Frequency plan for current applications
435 └── local_conf.json  ~-~--> Local fwd configuration
436
437 At default, the users need to change two configurations file: global_conf.json and local_conf.json.
438
439
440 ===== **1.) Configure gateway EUI and server address, port for fwd** =====
441
442
443 )))
444
445 [[image:1651745709709-887.png||height="820" width="621"]]
446
447
448 **Note: Users can find the TTN v3 server address from [[Server Addresses ~| The Things Stack for LoRaWAN (thethingsindustries.com)>>url:https://www.thethingsindustries.com/docs/getting-started/server-addresses/#deployments]]**
449
450
451 ===== **2). Override the global_conf.json file by selecting the appropriate frequency plan for your region in cfg-302** =====
452
453
454 the default frequency band is US915 in the (% style="color:#0000ff" %)**global_conf.json**(%%) file.
455
456 [[image:1651745838008-820.png||height="650" width="621"]]
457
458
459 If the user wants to change to other frequency bands, the User can copy the file from(% style="color:#0000ff" %)** /etc/lora/cfg-302**(%%) ** **and put it into** (% style="color:#0000ff" %)/etc/lora/global_conf.json(%%).**
460
461 **//eg: cp /etc/lora/cfg-302/EU-global_conf.json /etc/lora/global_conf.json //**
462
463
464
465 ====== **Selecting the appropriate frequency plan for your region in cfg-302.** ======
466
467 [[image:1651745867516-322.png||height="83" width="740"]]
468
469
470 ====== **Override the global_conf.json** ======
471
472 (% class="box infomessage" %)
473 (((
474 **cp /etc/lora/cfg-302/EU-global_conf.json /etc/lora/global_conf.json**
475 )))
476
477 [[image:1651745984006-868.png||height="87" width="745"]]
478
479
480 ==== (% style="color:inherit; font-family:inherit; font-size:23px" %)**g). Running the Fwd Server**(%%) ====
481
482
483 (((
484 Run the below command to restart the dragino_fwd:
485 )))
486
487 (((
488 (% class="box infomessage" %)
489 (((
490 **sudo systemctl start draginofwd**
491 )))
492 )))
493
494 (((
495 debug check the ruing status of fwd:
496 )))
497
498 (((
499 (% class="box infomessage" %)
500 (((
501 **sudo systemctl status draginofwd**
502 )))
503 )))
504
505 [[image:1651746045057-414.png||height="193" width="729"]]
506
507
508 Wait for a few minutes, the gateway will be online/active on the TTN-Stack.
509
510 [[image:1651746078253-168.png||height="372" width="621"]]
511
512
513
514 Get the draginofwd real-time running log:
515
516 (% class="box infomessage" %)
517 (((
518 **~ sudo journalctl -u draginofwd -f**
519 )))
520
521 [[image:1651746111963-838.png||height="184" width="730"]]
522
523
524
525 If there are LoRaWAN nodes transmitting nearby, we can see the traffic in (% style="color:#037691" %)**TTN v3 –> Gateway ~-~-> Live data**
526
527 [[image:1651746139304-966.png||height="326" width="621"]]
528
529
530 ==== **h). Commands to handle service** ====
531
532 * (% style="color:#0000ff" %)**Stop** (%%)dragino_fwd service:  sudo systemctl stop draginofwd
533 * (% style="color:#0000ff" %)**Disable**(%%) dragino_fwd auto run after boot: sudo systemctl disable draginofwd
534 * (% style="color:#0000ff" %)**Start** (%%)dragino_fwd : sudo systemctl start draginofwd
535 * (% style="color:#0000ff" %)**Auto run**(%%) dragino_fwd after boot:  sudo systemctl enable draginofwd
536 * (% style="color:#0000ff" %)**Show status** (%%)of dragino_fwd:  sudo systemctl status draginofwd
537
538 === 5.2.2 Basic Station Mode. ===
539
540
541 ==== **a). Get a gateway EUI from the device ETH MAC.** ====
542
543
544 In RPI, run the below command to get a Gateway EUI
545
546 (% class="box infomessage" %)
547 (((
548 **~ ifconfig eth0**
549 )))
550
551 [[image:1651745210205-512.png||height="130" width="621"]]
552
553
554 (((
555 (((
556 We got the ether (eth0 MAC) address is b8:27:eb:49:62:bc). Add ffff at the end and remove “:” to get the gateway ID: b827ebxxxxbcffff.  Input this to TTN v3. Make sure to select legacy packet forwarder.
557 )))
558 )))
559
560
561
562 ==== **b). Register the gateway with the Basic Station Mode on the TTN-Stack** ====
563
564
565 [[image:image-20230329164417-5.png]]
566
567
568
569 ==== **c). Download the gateway API keys, and then upload them to the gateway.** ====
570
571
572 [[image:image-20230329164704-6.png]]
573
574
575 ==== **d). The status Shows disconnect.** ====
576
577
578 [[image:image-20230329165619-7.png||height="568" width="948"]]
579
580
581 ==== **e.) Uploda API keys into the gateway** ====
582
583
584 the User can find the Basic Station configuration directory in (% style="color:#0000ff" %)**/etc/station/**(%%) there is the station.conf files, and ttnstack directory.
585
586 //**directory tree:**//
587
588 ///etc/station/
589 ├── station.conf 
590 └── ttnstack  ~-~--> ** ttnstack configuration file directory**
591 ├── cups.trust  ~-~-->  ttnstack auth file
592 ├── cups.uri  ~-~-->  ttnstack server URI file
593 └── station.conf  ~-~-~-~-> backup configuration file//
594
595
596
597 **and then upload the downloaded keys to this directory((% style="color:#0000ff" %)/etc/station/(%%))**
598
599 eg:
600
601 /etc/station/
602 ├── cups.key  ~-~--> uploaded by you
603 ├── lns.key  ~-~--> uploaded by you
604 ├── station.conf
605
606
607 ==== **f). Configure gateway EUI and server address** ====
608
609
610 [[image:image-20230329195650-10.png]]
611
612
613 After the user enters the correct parameters, the server will be run automatically
614
615
616 Tree Directory:
617
618 /etc/station/
619 ├── cups.key
620 ├── cups.trust
621 ├── cups.uri
622 ├── lns.key
623 ├── start-configure.sh
624 ├── station.conf
625 └── ttnstack
626 ├── cups.trust
627 ├── cups.uri
628 └── station.conf
629
630
631 ==== **g). Check station running log** ====
632
633
634 tail -f /var/log/station.log
635
636
637 [[image:image-20230329201624-11.png]]
638
639
640
641 = 6. Add GPS support in PG1302 =
642
643 The PG1302 supports GPS:
644
645 [[image:image-20240118160132-1.png||height="270" width="338"]]
646
647
648 * **The users can find the GPS device in Raspberry: /dev/ttyS0 or /dev/ttyAMA0**
649
650 [[image:image-20240118160407-2.png||height="71" width="458"]]
651
652
653 * **Check the GPS output: cat /dev/ttyS0**
654
655 [[image:image-20240118160454-3.png]]
656
657
658 * **Add the GPS to the Semtech UDP package forwarder configuration.**
659
660 [[image:image-20240118160928-4.png||height="426" width="464"]]
661
662
663 * **Test GPS function**
664
665 **~ 1.) Stop IoT service: systemctl stop draginofwd**
666
667
668 **~ 2.) Run the fwd command and check the output**
669
670
671 [[image:image-20240118161109-5.png]]
672
673
674 **~ 3.) Trouble Shooting:**
675
676 If you get many WARNING outputs, which should be the GPS location is invalid, you need to adjust the GPS location, it is recommended to put it outdoors
677
678
679 [[image:image-20240118161333-6.png]]
680
681
682 The user can check the PG1302 board GPS LED status to check the location,
683
684 GPS location is valid  ~-~--> GPS LED will light up
685
686 GPS location is invalid ~-~--> GPS LED will light down
687
688
689 [[image:image-20240118162033-7.png]]
690
691
692
693 = 7. Trouble Shooting =
694
695 (% class="wikigeneratedid" %)
696 7.1 Failed to start the concentrator how to debug
697
698
699 --When the problem "failed to start the concentrator" occurs, the user needs to check whether the I2C and SPI are enabled,--
700
701 --Users can enter the following command to check whether I2C is detected, and the detection of **"60"** is correct.--
702
703 (% class="box infomessage" %)
704 (((
705 --**i2cdetect -y 1**--
706 )))
707
708 **Note: This method has been removed because the i2c had been removed on the latest PG1302.**
709
710
711
712 Check whether the SPI path of the configuration file is correct,
713
714 (% class="box infomessage" %)
715 (((
716 **cat /etc/lora/global_conf.json **
717 )))
718
719 (% class="wikigeneratedid" %)
720 [[image:image-20230518092732-2.png||height="378" width="691"]]
721
722
723
724 = 8. Order Info =
725
726
727 Part Number: (% style="color:#0000ff" %)**PG1302-XX**   (%%) Or  Part Number: (% style="color:#0000ff" %)**PG1302-PI-XX   **(%%)(Include RPi converter board for RPI 3/4)
728
729 **~ (% style="color:#0000ff" %)XX:(%%)**
730
731 * (% style="color:red" %)**868** (%%)(For Bands: EU868,IN865)
732 * (% style="color:red" %)**915** (%%)(For Bands: US915,AU915,AS923,KR920)
733 * (% style="color:red" %)**470** (%%)(For Band: CN470)
734
735 = 9. Packing Info =
736
737
738 (((
739 **PG1302 Package Includes**:
740 )))
741
742 (((
743 * PG1302 x 1
744 * LoRa Antenna x 1
745 )))
746
747
748
749 (((
750 **PG1302-PI Package Includes**:
751 )))
752
753 * PG1302 x 1
754 * LoRa Antenna x 1
755 * RPi3/4 converter PCB
756 * Screws to hole converter PCB on RPI.
757
758 **PG1302-PI Dimension and weight: **
759
760 * Device Size: 18 x 8 x 4 cm
761 * Weight: 150g
762
763 = 10. Support =
764
765
766 (((
767 If you are experiencing issues and can't solve, you can send mail to [[support@dragino.com>>mailto:support@dragino.com]].
768 )))
769
770 (((
771 With your question as detail as possible. We will reply and help you in the shortest.
772 )))
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