<
From version < 82.1 >
edited by Xiaoling
on 2022/05/06 15:35
To version < 57.1 >
edited by Xiaoling
on 2022/05/06 10:12
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6 6  
7 7  
8 8  
9 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif]]
9 9  
10 10  
11 11  
12 12  **PG1302 LoRaWAN Concentrator User Manual**
13 13  
15 +[[image:1651796979665-130.png]]
14 14  
17 +Document Version: 1.0.0
15 15  
19 +Image Version: v1.0
16 16  
17 17  
18 -{{toc/}}
19 19  
20 20  
21 -----
24 +{{toc numbered="true"/}}
22 22  
23 -(% class="wikigeneratedid" id="H" %)
24 -(((
25 -
26 -)))
27 27  
28 -=== 1. Introduction ===
29 29  
30 -==== 1.1 What is PG1302 LoRaWAN Concentrator? ====
31 31  
32 -(((
33 -The PG1302 is a 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.
34 -)))
29 +~1. Introduction
35 35  
36 -(((
31 + 1.1 What is PG1302 LoRaWAN Concentrator?
32 +
33 +The PG1302 is a 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.
34 +
35 +
37 37  The PG1302 is design to use with Raspberry Pi to build smart metering fixed networks and Internet of Things applications with up to 5000 nodes per km2 in moderately interfered environment.
38 -)))
39 39  
40 -(((
38 +
41 41  PG1302 is fully compatible with RPi3/4, 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 exist OS.
42 -)))
43 43  
44 44  (((
45 45  (((
... ... @@ -47,7 +47,7 @@
47 47  )))
48 48  )))
49 49  
50 -==== 1.2 Features ====
47 +1.2 Features
51 51  
52 52  * Base on Semtech SX1302 solution
53 53  * Support Raspberry Pi 3B/3B+/4
... ... @@ -56,20 +56,20 @@
56 56  * Mini-PCIe Interface
57 57  * Converter board to support Raspberry Pi
58 58  
59 -==== 1.3 General Interfaces ====
56 +1.3 General Interfaces
60 60  
61 61  * SPI interface for LoRa
62 62  * Power Input: 5v, 1A
63 63  * 1 x I-PEX for LoRa
64 64  
65 -==== 1.4 Pin Mapping ====
62 +1.4 Pin Mapping
66 66  
67 67   [[image:1651743282627-547.png||height="402" width="425"]]
68 68  
66 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image006.gif]]
69 69  
68 +1.5 LEDs
70 70  
71 -==== 1.5 LEDs ====
72 -
73 73   TX: Blink when transmit a packet
74 74  
75 75   RX: Blink when receive a packet
... ... @@ -76,14 +76,12 @@
76 76  
77 77   Config: Always ON
78 78  
76 +1.6 Power Consumption
79 79  
80 -==== 1.6 Power Consumption ====
81 -
82 82   TBD
83 83  
80 +1.7 Applications
84 84  
85 -==== 1.7 Applications ====
86 -
87 87  * Smart Buildings & Home Automation
88 88  * Logistics and Supply Chain Management
89 89  * Smart Metering
... ... @@ -91,20 +91,19 @@
91 91  * Smart Cities
92 92  * Smart Factory
93 93  
94 -=== 2. Example: Set up as LoRaWAN gateway. ===
89 +2. Example: Set up as LoRaWAN gateway.
95 95  
96 -==== 2.1 System structure ====
91 + 2.1 System structure
97 97  
98 - 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.
93 + This example is an example to show how to set up the PG1302 + RPi as a LoRaWAN gateway to use with [[TheThingsNetwork>>http://www.thethingsnetwork.org/]](TTN) LoRaWAN server.. Set up method for other  server are similar。
99 99  
100 - Set up method for other server are similar.
101 -
102 102  (% style="text-align:center" %)
103 103  [[image:1651743698677-436.png||height="457" width="686"]]
104 104  
105 105  
99 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image008.gif]]
106 106  
107 -==== 2.2 Hardware Installation ====
101 +2.2 Hardware Installation
108 108  
109 109  **~ Important Notice: **Please power the RPI with 5V,3A cable.
110 110  
... ... @@ -111,54 +111,44 @@
111 111  (% style="text-align:center" %)
112 112  [[image:1651743803032-803.png]]
113 113  
108 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image010.gif]]
114 114  
110 +3. Install the software?
115 115  
116 -=== 3. Install the software? ===
117 -
118 118   There are two ways to install software in RPi4 to use PG1302.
119 119  
120 120  * Flash SD card with Dragino pre-build image which support Web UI.
121 121  * Install lora packet forwarder in existing RPi OS.
122 122  
123 -=== 4. Flash with pre-build image ===
117 +4. Flash with pre-build image
124 124  
125 -==== 4.1 Download the dragino image for RPI ====
119 + 4.1 Download the dragino image for RPI
126 126  
127 127   Download PG1302_for_Rpi4_64_with_webui from
128 128  
129 129   [[https:~~/~~/www.dropbox.com/sh/f6nbldh1qbspya5/AACgL6pDkwdBQO1BQqq_Nubwa?dl=0>>https://www.dropbox.com/sh/f6nbldh1qbspya5/AACgL6pDkwdBQO1BQqq_Nubwa?dl=0]]
130 130  
125 +4.2 Flash the image to SD card
131 131  
132 -==== 4.2 Flash the image to SD card ====
127 + Flash the image to SD card:
133 133  
134 - Flash the image to SD card:
135 -
136 136  (% style="text-align:center" %)
137 137  [[image:1651744119133-233.png||height="373" width="621"]]
138 138  
139 - Note: Download the flash tool following this link
132 + [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image012.jpg]]Note: Download the flash tool following this link
140 140  
141 141   [[https:~~/~~/www.balena.io/etcher/>>https://www.balena.io/etcher/]]
142 142  
136 +4.3 Access the Linux console.
143 143  
144 -==== 4.3 Access the Linux console ====
138 + 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.
145 145  
146 -(((
147 - 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
148 -)))
140 + 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
149 149  
150 -(((
151 - 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.
152 -)))
153 -
154 -(((
155 - 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
156 -)))
157 -
158 -
159 159  (% style="text-align:center" %)
160 160  [[image:1651744193675-591.png||height="450" width="466"]]
161 161  
145 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image014.jpg]]
162 162  
163 163   The account details for Web Login are:
164 164  
... ... @@ -177,18 +177,18 @@
177 177  (% style="text-align:center" %)
178 178  [[image:1651744358515-107.png||height="366" width="581"]]
179 179  
164 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image018.jpg]] 4.4 Access the WebUI of RPi4.
180 180  
181 -==== 4.4 Access the WebUI of RPi4. ====
166 + 4.4.1 Home page
182 182  
183 -===== 4.4.1 Home page =====
168 + Open a browser on the PC and type the RPI ip address
184 184  
185 - Open a browser on the PC and type the RPI ip address
170 + [[http:~~/~~/IP_ADDRESS** **>>url:http://192.168.1.xx/]] (If the IP is assigned by uplink router)
186 186  
187 - [[http:~~/~~/IP_ADDRESS** **>>url:http://192.168.1.xx/]] (If the IP is assigned by uplink router)
188 188  
189 - You will see the login interface of RPI as shown below.
173 + You will see the login interface of RPI as shown below.
190 190  
191 - The account details for Web Login are:
175 + The account details for Web Login are:
192 192  
193 193  **~ User Name: root**
194 194  
... ... @@ -197,8 +197,9 @@
197 197  (% style="text-align:center" %)
198 198  [[image:1651744457761-993.png||height="352" width="621"]]
199 199  
184 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image020.jpg]]
200 200  
201 -===== 4.4.2 LoRa Page =====
186 +4.4.2 LoRa Page
202 202  
203 203   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.
204 204  
... ... @@ -205,6 +205,7 @@
205 205  (% style="text-align:center" %)
206 206  [[image:1651744554845-970.png||height="328" width="621"]]
207 207  
193 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image022.jpg]]
208 208  
209 209   Different PG1302 hardware version can support different frequency range:
210 210  
... ... @@ -222,61 +222,71 @@
222 222   [[http:~~/~~/wiki.dragino.com/index.php?title=Customized_Frequency_Band_for_Gateway>>url:http://wiki.dragino.com/index.php?title=Customized_Frequency_Band_for_Gateway]]
223 223  
224 224  
225 -===== 4.4.3 LoRaWAN Page =====
211 +4.4.3 LoRaWAN Page
226 226  
227 -====== 4.4.3.1 Semtech UDP ======
213 + 4.4.3.1 Semtech UDP
228 228  
229 229  
230 230  (% style="text-align:center" %)
231 231  [[image:1651744767914-283.png||height="352" width="621"]]
232 232  
233 - Note *: See this instruction for how to configure TTN.
234 234  
235 - [[https:~~/~~/wiki.dragino.com/index.php?title=Notes_for_TTN>>url:https://wiki.dragino.com/index.php?title=Notes_for_TTN||style="background-color: rgb(255, 255, 255);"]]
220 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image024.jpg]]
236 236  
222 + Note *: See this instruction for how to configure TTN.
237 237  
238 -====== 4.4.3.2 Basic Station ======
224 + [[https:~~/~~/wiki.dragino.com/index.php?title=Notes_for_TTN>>url:https://wiki.dragino.com/index.php?title=Notes_for_TTN]]
239 239  
226 +
227 +4.4.3.2 Basic Station
228 +
240 240  (% style="text-align:center" %)
241 241  [[image:1651744890629-683.png||height="380" width="621"]]
242 242  
243 - Note *: See this instruction for how to configure TTN.
232 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image026.jpg]]
244 244  
245 - [[https:~~/~~/wiki.dragino.com/index.php?title=Notes_for_AWS-IoT-Core>>url:https://wiki.dragino.com/index.php?title=Notes_for_AWS-IoT-Core]]
234 + Note *: See this instruction for how to configure TTN.
246 246  
236 + [[https:~~/~~/wiki.dragino.com/index.php?title=Notes_for_AWS-IoT-Core>>url:https://wiki.dragino.com/index.php?title=Notes_for_AWS-IoT-Core]]
247 247  
248 -===== 4.4.4 LogRead =====
249 249  
250 -====== 4.4.4.1 LoRa Log ======
239 +4.4.4 LogRead
251 251  
241 + 4.4.4.1 LoRa Log
242 +
252 252  (% style="text-align:center" %)
253 253  [[image:1651744955955-452.png||height="571" width="621"]]
254 254  
255 - Show the frequency for LoRa Radio and traffics.
246 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image028.jpg]]
256 256  
248 + Show the frequency for LoRa Radio and traffics.
257 257  
258 -====== 4.4.4.2 System Log ======
259 259  
260 - Show system log.
251 +4.4.4.2 System Log
261 261  
253 + Show system log.
254 +
262 262  (% style="text-align:center" %)
263 263  [[image:1651745003470-264.png||height="477" width="621"]]
264 264  
265 265  
259 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image030.jpg]]
266 266  
267 -====== 4.4.4.3 Record Log ======
261 +4.4.4.3 Record Log
268 268  
269 -**~ Record the system log.**
270 270  
264 +**Record the system log.**
265 +
271 271  (% style="text-align:center" %)
272 272  [[image:1651745069814-662.png||height="144" width="621"]]
273 273  
269 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image032.jpg]]
274 274  
275 -=== 5. Install stand alone LoRa Packet Forwarder. ===
271 +5. Install stand alone LoRa Packet Forwarder.
276 276  
277 -==== 5.1 OS requirement ====
273 + 5.1 OS requirement
278 278  
279 - RPI in this example is RPI model 4B with fresh Raspbian OS install.
275 + RPI in this example is RPI model 4B with fresh Raspbian OS install.
280 280  
281 281   pi@raspberrypi:~~$ cat /etc/os-release
282 282  
... ... @@ -299,36 +299,39 @@
299 299   BUG_REPORT_URL="http:~/~/www.raspbian.org/RaspbianBugs"
300 300  
301 301  
302 -==== 5.2 Get Gateway ID in Raspberry and input this in TTN v3. ====
298 +5.2 Get Gateway ID in Raspberry and input this in TTN v3.
303 303  
304 - In RPI, run below command to get a Gateway ID
300 + In RPI, run below command to get a Gateway ID
305 305  
306 - (% class="mark" %)ifconfig eth0
302 + ifconfig eth0
307 307  
308 308  (% style="text-align:center" %)
309 309  [[image:1651745210205-512.png||height="130" width="621"]]
310 310  
307 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image034.gif]]
311 311  
312 - 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.
309 + 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.
313 313  
314 - Make sure to select legacy packet forwarder.
315 -
316 316  (% style="text-align:center" %)
317 317  [[image:1651745267862-321.png||height="526" width="621"]]
318 318  
314 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image036.jpg]]
319 319  
316 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image038.jpg]]
320 320  
321 321  (% style="text-align:center" %)
322 322  [[image:1651745306744-481.png||height="478" width="621"]]
323 323  
324 -After set up, the status should show not connected as below:
325 -
326 326  (% style="text-align:center" %)
327 327  [[image:1651745366987-458.png||height="363" width="621"]]
328 328  
324 +After set up, the status should show not connected as below:
329 329  
330 -===== 5.2.1 Download and install LoRaWAN packet forwarder =====
326 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image040.jpg]]
331 331  
328 +5.2.1 Download and install LoRaWAN packet forwarder
329 +
330 +
332 332   Enable SPI and I2C first:
333 333  
334 334   a)SPI needs to be enabled on the Raspberry Pi
... ... @@ -345,14 +345,20 @@
345 345  (% style="text-align:center" %)
346 346  [[image:image-20220505181135-2.png]]
347 347  
347 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image044.jpg]]
348 348  
349 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image046.jpg]]
349 349  
350 350  
352 +
353 +
354 +
351 351   In RPI , Fist: Enter root account:
352 352  
353 353  (% style="text-align:center" %)
354 354  [[image:1651745583363-614.png]]
355 355  
360 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image048.jpg]]
356 356  
357 357   and then run:
358 358  
... ... @@ -365,6 +365,7 @@
365 365  (% style="text-align:center" %)
366 366  [[image:1651745611629-818.png]]
367 367  
373 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image050.gif]]
368 368  
369 369   This will download the packet forwarder package from Dragino Server to RPI, and start install the package.
370 370  
... ... @@ -373,8 +373,9 @@
373 373  (% style="text-align:center" %)
374 374  [[image:1651745657252-173.png||height="426" width="621"]]
375 375  
382 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image052.jpg]]
376 376  
377 -===== 5.2.2 Config Gateway ID, Frequency Band and Server address =====
384 +5.5.2 Config Gateway ID, Frequency Band and Server address
378 378  
379 379   After installation, user can find the configuration file in** /etc/lora/ **Replace the gateway ID we got above to the **gateway_ID** in file **local_conf.json**
380 380  
... ... @@ -383,6 +383,7 @@
383 383  (% style="text-align:center" %)
384 384  [[image:1651745709709-887.png||height="820" width="621"]]
385 385  
393 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image054.jpg]]
386 386  
387 387   User can find the TTN v3 server address from:
388 388  
... ... @@ -394,6 +394,7 @@
394 394  (% style="text-align:center" %)
395 395  [[image:1651745838008-820.png||height="650" width="621"]]
396 396  
405 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image056.jpg]]
397 397  
398 398  * If user want to change to other frequency bands, User can copy the file from **/etc/lora/cfg-302 **and put it into** /etc/lora/global_conf.json.**
399 399  
... ... @@ -410,21 +410,17 @@
410 410  (% style="text-align:center" %)
411 411  [[image:1651745984006-868.png]]
412 412  
422 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image060.jpg]]
413 413  
414 414  * If user wants to change to other LoRaWAN server, modify the **global_conf.json** file.
415 415  
416 -(% class="wikigeneratedid" %)
417 -(((
418 -
419 -)))
426 +5.2.3 Check result
420 420  
421 -===== 5.2.3 Check result =====
422 -
423 423   Run below command to restart the dragino_fwd:
424 424  
425 - sudo systemctl stop draginofwd
430 + sudo systemctl stop draginofwd
426 426  
427 - sudo systemctl start draginofwd
432 + sudo systemctl start draginofwd
428 428  
429 429   debug check the ruing status of fwd:
430 430  
... ... @@ -433,6 +433,7 @@
433 433  (% style="text-align:center" %)
434 434  [[image:1651746045057-414.png]]
435 435  
441 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image062.jpg]]
436 436  
437 437   The dragino_fwd will start with the new gateway ID and TTN v3 should show the connection ok:
438 438  
... ... @@ -439,15 +439,17 @@
439 439  (% style="text-align:center" %)
440 440  [[image:1651746078253-168.png||height="372" width="621"]]
441 441  
448 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image064.jpg]]
442 442  
443 443  
444 444   We can check dragino_fwd running states in RPi by running:
445 445  
446 - //**sudo journalctl -u draginofwd -f**//
453 + sudo journalctl -u draginofwd -f
447 447  
448 448  (% style="text-align:center" %)
449 449  [[image:1651746111963-838.png]]
450 450  
458 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image066.gif]]
451 451  
452 452  
453 453   If there are LoRaWAN nodes transmits nearby, we can see the traffic in TTN v3 –> Gateway ~-~-> Live data
... ... @@ -455,10 +455,10 @@
455 455  (% style="text-align:center" %)
456 456  [[image:1651746139304-966.png||height="326" width="621"]]
457 457  
466 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image068.jpg]]
458 458  
468 +5.2.4 Commands to handle service
459 459  
460 -===== 5.2.4 Commands to handle service =====
461 -
462 462  * **Stop** dragino_fwd service:  sudo systemctl stop draginofwd
463 463  * **Disable** dragino_fwd auto run after boot: sudo systemctl disable draginofwd
464 464  * **Start** dragino_fwd : sudo systemctl start draginofwd
... ... @@ -465,24 +465,24 @@
465 465  * **Auto run** dragino_fwd after boot:  sudo systemctl enable draginofwd
466 466  * **Show status** of dragino_fwd:  sudo systemctl status draginofwd
467 467  
468 -=== 6. Order Info ===
476 +6. Order Info
469 469  
470 - Part Number: **PG1302-XX**  Or Part Number: **PG1302-PI-XX   **(Include RPi converter board for RPI 3/4)
478 + Part Number: **PG1302-XX**  Or Part Number: **PG1302-PI-XX   **(Include RPi converter board for RPI 3/4)
471 471  
472 -**~ XX:**
480 +**~ XX:**
473 473  
474 474  * 868 (For Bands: EU868,IN865)
475 475  * 915 (For Bands: US915,AU915,AS923,KR920)
476 476  * 470 (For Band: CN470)
477 477  
478 -=== 7. Packing Info ===
486 +7. Packing Info
479 479  
480 -**~ PG1302 Package Includes**:
488 +**~ PG1302 Package Includes**:
481 481  
482 482  * PG1302 x 1
483 483  * LoRa Antenna x 1
484 484  
485 -**~ PG1302-PI Package Includes**:
493 +**~ PG1302-PI Package Includes**:
486 486  
487 487  * PG1302 x 1
488 488  * LoRa Antenna x 1
... ... @@ -489,7 +489,7 @@
489 489  * RPi3/4 converter PCB
490 490  * Screws to hole converter PCB on RPI.
491 491  
492 -=== 8. Reference ===
500 +8. Reference
493 493  
494 494  * Datasheet, User Manual & Software Download:
495 495  
... ... @@ -496,9 +496,12 @@
496 496   [[https:~~/~~/www.dropbox.com/sh/f6nbldh1qbspya5/AACgL6pDkwdBQO1BQqq_Nubwa?dl=0>>url:https://www.dropbox.com/sh/f6nbldh1qbspya5/AACgL6pDkwdBQO1BQqq_Nubwa?dl=0]]
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498 498  
499 -=== 9. Support ===
507 +9. Support
500 500  
501 501  * 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.
502 502  * 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
503 503  
504 504   [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]]
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