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Version 103.1 by Edwin Chen on 2022/11/29 14:07
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1 (% style="text-align:center" %)
2 [[image:image-20221028134937-1.jpeg||height="466" width="466"]]
3
4 (((
5
6
7
8 )))
9
10 **Table of Contents：**
11
12 {{toc/}}
13
14
15
16
17
18
19 = **1. Introduction** =
20
21 == **1.1 What is LG01v2** ==
22
23
24 (((
25 (((
26 The LG01v2 is an (% style="color:green" %)**open-source single channel LoRa Gateway**(%%). It lets you bridge LoRa wireless network to an IP network via (% style="color:green" %)**WiFi , Ethernet or Cellular Network**(%%) (via Optional 4G module). The LoRa wireless allows users to send data and reach extremely long ranges at low data rates.
27
28 LG01v2 is specially design for peer to peer LoRa protocol instead of LoRaWAN protocol. The LG01v2 use single channel LoRa module to minimize the deployment cost for a private p2p LoRa wireless network.
29 )))
30
31 (((
32 LG01v2 uses Open Source Linux system. User can modify the Linux part and develop customize software base on it. It has (% style="color:green" %)1.2Ghz Quad-Core CPU(%%) , (% style="color:green" %)4GB eMMC storage(%%) and (% style="color:green" %)512MB RAM(%%) for most application.
33
34 LG01v2 supports (% style="color:green" %)**remote management**(%%). System Integrator can easy to remote monitor the gateway and maintain it.
35 )))
36
37
38 == **1.2 Specifications** ==
39
40
41 (% style="color:#037691" %)**Hardware System:**
42
43 * CPU: Quad-core Cortex-A7 1.2Ghz
44 * RAM: 512MB
45 * eMMC: 4GB
46
47 (% style="color:#037691" %)**Interface:**
48
49 * 10M/100M RJ45 Ports x 1
50 * WiFi 802.11 b/g/n
51
52 (% style="color:#037691" %)**Operating Condition:**
53
54 * Work Temperature: -20 ~~ 65°C
55 * Storage Temperature: -20 ~~ 65°C
56 * Power Input: 5V, 2A, DC
57
58
59 == **1.3 Features** ==
60
61
62 * Open Source Debian system
63 * Managed by Web GUI, SSH via WAN or WiFi
64 * Remote Management
65 * Auto-provisioning for batch deployment and management
66 * LoRa Gateway
67 * Built-in  (% style="color:#037691" %)//**Node-Red**// (%%)local Application server
68
69
70 == **1.4 Block Diagram** ==
71
72
73
74 == **1.5 LED Indicators** ==
75
76
77 LG01-V2 has totally four LEDs, They are:
78
79
80 (% style="color:blue" %)//**➢ Power LED**//(%%)//: This RED LED will be solid if the device is properly powered//
81
82 (% style="color:blue" %)//**➢ ETH LED**//(%%)//:  This RGB LED will blink GREEN when the ETH port is connecting//
83
84 (% style="color:blue" %)//**➢ SYS LED**//(%%)//:  This RGB LED will show different colors in different states~://
85
86 // ✓ **SOLID GREEN:** The device is alive with a LoRaWAN server connection.//
87
88 // ✓ **BLINKING GREEN:** a) Device has internet connection but no LoRaWAN Connection. or b) Device is in booting stage, in this stage, it will BLINKING GREEN for several seconds and then with BLINKING GREEN together//
89
90 // ✓** SOLID RED:** Device doesn't have an Internet connection.//
91
92 (% style="color:blue" %)//**➢ WIFI LED**//(%%)//: This LED shows the WIFI interface connection status.//
93
94
95 == **1.6 Button Intruction** ==
96
97
98 LG01-V2 has a black toggle button, which is:
99
100
101 (% style="color:blue" %)**//➢ //Long press 4-5s  : **(%%)the gateway will reload the Network and Initialize wifi configuration
102
103 // **LED status: ** ETH LED will BLINKIND BULE Until the reload is finished.//
104
105
106 (% style="color:blue" %)//**➢ **//**Long press more than 10s:**(%%)**    **//the gateway will restore the factory settings.//
107
108 //**LED status: ** ETH LED will SOLID BULE Until the restore is finished.//
109
110
111 = **2. Quick Start** =
112
113
114 The LG01-V2 supports network access via Ethernet or Wi-Fi connection and runs without a network.
115
116 In most cases, the first thing you need to do is make the LG01-v2 accessible to the network.
117
118
119 == **2.1 Connects to the network and accesses the gateway Web UI** ==
120
121 == **2.1.1 connect the network.** ==
122
123
124 === (% style="color:blue" %)**Method 1**(%%):  Connect via Ethernet with DHCP IP from the router ===
125
126
127 Connect the LG01-V2 Ethernet port to your router and LG01-V2 can 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 LG01-V2.
128
129 You can also use this IP to connect.
130
131
132 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20All%20Gateway%20models/HP0C/WebHome/image-20220622100129-1.png?width=1263&height=332&rev=1.1||alt="image-20220622100129-1.png"]]
133
134
135 === (% style="color:blue" %)**Method 2**(%%):  Connect via WiFi with DHCP IP from the router ===
136
137
138 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20All%20Gateway%20models/HP0C/WebHome/image-20220622100542-2.png?width=1256&height=369&rev=1.1||alt="image-20220622100542-2.png"]]
139
140
141 Fill in the WiFi information by checking the box and clicking (% style="color:red" %)**Save&Apply**
142
143
144 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20All%20Gateway%20models/HP0C/WebHome/image-20220622102702-6.png?rev=1.1||alt="image-20220622102702-6.png"]]
145
146
147 **Wi-Fi configuration successful**
148
149
150 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20All%20Gateway%20models/HP0C/WebHome/image-20220622102847-7.png?rev=1.1||alt="image-20220622102847-7.png"]]
151
152
153 = **3. Web Configure Pages** =
154
155 == **3.1 Home** ==
156
157
158 //Shows the system running status~://
159
160 [[image:image-20221104155612-1.png||height="497" width="942"]]
161
162
163 == **3.2 Network Settings** ==
164
165 === **3.2.1 Network ~-~-> WiFi** ===
166
167
168 [[image:image-20221104155654-2.png||height="319" width="813"]]
169
170
171 === **3.4.2 Network ~-~-> System Status** ===
172
173
174 [[image:image-20221104155724-3.png||height="679" width="861"]]
175
176
177 === **3.4.3 Network ~-~-> Firewall** ===
178
179
180 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20All%20Gateway%20models/HP0C/WebHome/image-20220616115351-6.png?width=661&height=244&rev=1.1||alt="image-20220616115351-6.png"]]
181
182
183 == **3.5 System** ==
184
185 === **3.5.1  System ~-~-> System Overview** ===
186
187
188 Shows the system info:
189
190 [[image:image-20221104155907-4.png]]
191
192
193 === **3.5.2 System ~-~-> Backup/Restore** ===
194
195
196 [[image:image-20221104155928-5.png||height="334" width="880"]]
197
198
199 = (% id="cke_bm_1978S" style="display:none" %)** **(%%)**4. Build in Server** =
200
201
202 The default factory version of LG01-V2 is installed with the built-in Applicant server: (% style="color:blue" %)**Node-Red**
203
204
205 [[image:image-20221104155949-6.png||height="315" width="1023"]]
206
207
208 (% style="color:red" %)**Note:**
209
210 **Path**: System ~-~-> Built-in Server
211
212
213 (% style="color:blue" %)**Troubleshooting：**
214
215 **~ 1. URL does not jump properly**
216
217 For the Node-Red, you can use the local IP address and the port is 1880 to access it.
218
219
220 == **4.1 Application Server ~-~- Node-Red** ==
221
222
223 You can access the gateway's built-in AS server of (% style="color:blue" %)**Node-Red **(%%)via the URL((% style="background-color:yellow" %)__**//http:~/~/<hostname>:1880 or http:~/~/<local-IPV4-address>//**__(%%)) in your browser.
224
225
226 Such as (% style="background-color:yellow" %)__**//http:~/~/dragino-54ff12:1880  or http:~/~/<Local-IPV4-Address>//**__
227
228
229 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20All%20Gateway%20models/HP0C/WebHome/image-20220725172124-3.png?width=843&height=610&rev=1.1||alt="image-20220725172124-3.png"]]
230
231
232 = **5. How to configure the Lora Gateway** =
233
234 == **5.1 Configure and Debug LoRa wireless of LG01v2** ==
235
236
237 Users can access the Lora configuration page by running the following command, then select the option **''serial port setup"**:
238
239 (% class="box infomessage" %)
240 (((
241 **root@dragino-2406ef:~~# minicom -s**
242 )))
243
244 [[image:image-20221029174637-2.png||height="410" width="524"]]
245
246
247 And then, change the setting:
248
249 (% class="box infomessage" %)
250 (((
251 **Serial Device :** **/dev/ttyUSB0**
252
253 **Bps/Par/Bits : 9600 8N1**
254 )))
255
256
257 (% style="color:red" %)**Note: Enter the corresponding letter to change the configuration, like A,B,C**
258
259
260 (% style="color:red" %)[[image:image-20221029174703-3.png]]
261
262
263 Enter **AT+CFG **in the interface to get the configuration,
264
265
266 (% class="box infomessage" %)
267 (((
268 **AT+FRE=868.100,868.100  ~-~--> TX and RX frequency
269 AT+GROUPMOD=0,0  ~-~-->  TX and RX group
270 AT+BW=0,0  ~-~-->  TX and RX Bandwidth
271 AT+SF=12,12  ~-~-->  TX and RX Spreading Factor
272 AT+POWER=14  ~-~-->  TX Power Range
273 AT+CRC=1,1  ~-~-->  TX and RX CRC Type
274 AT+HEADER=0,0  ~-~-->  TX and RX Header Type
275 AT+CR=1,1  ~-~-->  TX and RX Coding Rate
276 AT+IQ=0,0  ~-~-->  TX and RX InvertIQ
277 AT+PREAMBLE=8,8  ~-~-->  TX and RX Preamble Length
278 AT+SYNCWORD=0  ~-~-->  Syncword(0: private，1: public)
279 AT+RXMOD=65535,0  ~-~-->  Rx Timeout and Reply mode
280 AT+RXDAFORM=1**                              
281 )))
282
283
284 == **5.2 Example: LG01v2** ==
285
286 === **5.2.1 Introduce for the example:** ===
287
288
289 [[image:image-20221104102736-3.png||height="282" width="723"]]
290
291
292 In this example, there are two devices:
293
294 * **LA66 Shield + UNO + DHT11**: The UNO will get the temperature and humidity and broadcast the value via LoRa protocol.
295 * **LG01v2** : LG01v2 is set to listening the LoRa Channel which LA66 is broadcasting. When LG01v2 get the data from LA66, LG01v2 will plot the data in built-in IoT server.
296
297
298 === **5.2.2 Set Up LA66 Shield + UNO** ===
299
300
301 ==== **Set up LA66 Module** ====
302
303
304 LA66 Module is loaded with the firmware **[[LA66 Peer-to-Peer firmware>>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20LoRaWAN%20Shield%20User%20Manual/Instruction%20for%20LA66%20Peer%20to%20Peer%20firmware/]] **and user can use AT Command to set up LA66 with below parameters:
305
306 (((
307 (% style="color:red" %)**LA66 Shield as Sender: **
308
309 (% class="box infomessage" %)
310 (((
311 **LA66 Shield configuration:**
312
313 AT+FRE=868.100,868.100  ~-~--> TX and RX frequency set: 868100000
314 AT+BW=0,0  ~-~--> TX and RX Bandwidth set: 125kHz
315 AT+SF=12,12  ~-~--> TX and RX Spreading Factor set: SF12
316 AT+POWER=14  ~-~--> TX Power Range set: 14dBm
317 AT+CRC=1,1  ~-~--> TX and RX CRC Type
318 AT+HEADER=0,0  ~-~--> TX and RX Header Type
319 AT+CR=1,1  ~-~--> TX and RX Coding Rate
320 AT+IQ=0,0  ~-~--> TX and RX InvertIQ
321 AT+PREAMBLE=8,8  ~-~--> TX and RX Preamble Length set: 8
322 AT+SYNCWORD=0  ~-~-->  Syncword**(0: private，1: public)**
323 AT+RXMOD=6,0  ~-~-->  Rx Timeout and Reply mode
324 )))
325 )))
326
327
328
329 ==== **Set up Arduino UNO** ====
330
331 (% id="cke_bm_1033249S" style="display:none" %)** **
332
333 **Hardware Connection**
334
335 (% class="box infomessage" %)
336 (((
337 **The DHT11 sensor connects to the LA66 Shield:**
338
339 **VCC  <~-~--> 3.3V (Red line)**
340 **DATA <~-~--> PIN8 (Purple line)**
341 **GND  <~-~--> GND (White line)**
342 )))
343
344 [[image:image-20221108170731-5.png||height="588" width="441"]]
345
346
347
348 ===== **1. Open Arduino IDE** =====
349
350
351 [[image:image-20221108172149-6.png||height="650" width="542"]]
352
353
354
355 ===== **2. Open project** =====
356
357
358 Users can download Arduino files from this link: [[attach:Log-Temperature-Sensor-and-send-data-to-Node-red.ino||target="_blank"]]
359
360 Then click Compile and Upload to LA66 Shield,
361
362 [[image:image-20221108172432-7.png]]
363
364
365
366 ===== **3. Open the Serial Monitor to check the LA66 Shield data** =====
367
368
369 The UNO will now reads the temperature and humidity data from the sensor and broadcast it via LoRa wireless,
370
371 [[image:image-20221108174840-8.png||height="731" width="671"]]
372
373
374
375 Sending out data as below.
376
377 [[image:image-20221108175113-9.png||height="556" width="998"]]
378
379
380 === **5.2.3 Set Up LG01v2** ===
381
382
383 Configure LG01v2 LoRa channel parameters so it can get data from LA66 Shield
384
385 (% style="color:red; font-weight:bold" %)**LG01v**(% style="color:red" %)**2 as Receiver: (configured as AT+RXMOD=65535,2)**
386
387 (% class="box infomessage" %)
388 (((
389 **LG01-V2 configuration:**
390
391 AT+FRE=868.100,868.100  ~-~--> TX and RX frequency set: 868100000
392 AT+BW=0,0  ~-~--> TX and RX Bandwidth set: 125kHz
393 AT+SF=12,12  ~-~--> TX and RX Spreading Factor set: SF12
394 AT+POWER=14  ~-~--> TX Power Range set: 14dBm
395 AT+CRC=1,1  ~-~--> TX and RX CRC Type
396 AT+HEADER=0,0  ~-~--> TX and RX Header Type
397 AT+CR=1,1  ~-~--> TX and RX Coding Rate
398 AT+IQ=0,0  ~-~--> TX and RX InvertIQ
399 AT+PREAMBLE=8,8  ~-~--> TX and RX Preamble Length set: 8
400 AT+SYNCWORD=0  ~-~-->  Syncword**(0: private，1: public)**
401 AT+RXMOD=65535,0  ~-~-->  Rx Timeout and Reply mode, RX window always open
402 )))
403
404
405 === **5.2.4 Test result** ===
406
407
408 After the above configuration is complete, users can send test simulation data to check whether the configuration is correct, In LA66 sheild serial console send:(% style="color:red" %)**(AT+SEND=1,hello world,2,3).**
409 )))
410
411 When LG01v2 replies with ACK when it receives a packet sent by LA66 sheild.
412
413 [[image:image-20221108164413-2.png]]
414
415
416
417 In the real-time log of LG01v2：
418
419 [[image:image-20221108170314-3.png]]
420
421
422 === **5.2.5 Plot data chart in LG01v2** ===
423
424
425 User can plot the temperature and humidity chat via LG01v2 built-in IoT server.
426
427 User can import this example in Node-Red: [[attach:Log-Temperature-Sensor-and-send-data-to-node-red.json||target="_blank"]]
428
429 [[image:image-20221108180334-10.png||height="651" width="1141"]]
430
431
432 The temperature and humidity chart is displayed in the built-in node-red UI
433
434 **Browser input: (% style="background-color:yellow" %)__//http:~/~/<local-IPV4-address>//__(%%)**
435
436 [[image:image-20221108180458-11.png||height="402" width="1137"]]
437
438
439 = (% style="color:inherit; font-family:inherit; font-size:29px" %)**6. How users can access LG01**(%%)**v(% style="color:inherit; font-family:inherit; font-size:29px" %)2 using serial USB(%%)** =
440
441
442 (% style="color:blue" %)**USB TTL to LG01-V2  Connection:**
443
444
445 Port 1 of the UART on the LG01-V2 is GND
446
447 (% class="box infomessage" %)
448 (((
449 **TXD  <~-~--> UART RXD (Gray line)**
450
451 **RXD  <~-~--> UART TXD (White line)**
452
453 **GND <~-~--> GND (Black line)**
454 )))
455
456
457 **LG01-V2 UART connection photo**
458
459 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20All%20Gateway%20models/HP0C/WebHome/image-20220804163015-1.png?width=466&height=621&rev=1.1||alt="image-20220804163015-1.png"]]
460
461
462
463 In the PC, you can use the serial port tool(such as [[putty>>url:http://www.chiark.greenend.org.uk/~~sgtatham/putty/download.html]] in Windows), you need to set the serial baud rate to (% style="color:blue" %)**115200**(%%) to access the serial console for LG01v2. LG01v2 will output system info once power on as below:
464
465
466 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20All%20Gateway%20models/HP0C/WebHome/image-20220804164928-3.png?width=332&height=320&rev=1.1||alt="image-20220804164928-3.png"]]
467
468
469 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20All%20Gateway%20models/HP0C/WebHome/image-20220804164747-2.png?width=594&height=622&rev=1.1||alt="image-20220804164747-2.png"]]
470
471
472 = **7. FAQ** =
473
474 == **7.1 How does LG01-V2 communicate with Lora shield (LoRa.h)** ==
475
476
477 This example describes how to use LG01-V2, LoRa Shield to set up a LoRa network,
478
479 [[image:image-20221103152238-8.png||height="251" width="654"]]
480
481
482 (% style="color:red" %)**Prerequisites: The configurations of LG01-V2 and Lora shield must match**
483
484 **LG01-V2 configuration:**
485
486 (% class="box infomessage" %)
487 (((
488 AT+FRE=868.100,868.100  ~-~--> TX and RX frequency set: 868100000
489 AT+BW=0,0  ~-~--> TX and RX Bandwidth set: 125kHz
490 AT+SF=12,12  ~-~--> TX and RX Spreading Factor set: SF12
491 AT+POWER=14  ~-~--> TX Power Range
492 AT+CRC=1,1  ~-~--> TX and RX CRC Type
493 AT+HEADER=0,0  ~-~--> TX and RX Header Type
494 AT+CR=1,1  ~-~--> TX and RX Coding Rate
495 AT+IQ=0,0  ~-~--> TX and RX InvertIQ
496 AT+PREAMBLE=8,8  ~-~--> TX and RX Preamble Length set: 8
497 AT+SYNCWORD=0  ~-~-->  Syncword**(0: private，1: public), **the corresponding Lora shield syncword is 0x12
498 AT+RXMOD=65535,0  ~-~-->  Rx Timeout and Reply mode,RX window always open
499 AT+RXDAFORM=1    
500 )))
501
502
503
504 **Lora shield configuration:**
505
506 Lora Shield example: [[attach:LoRa_Shield_Sketch_For_MQTT.ino||target="_blank"]] , [[attach:arduino-LoRa-master.zip||target="_blank"]]
507
508 [[image:image-20221101161318-2.png]]
509
510
511
512 **Test LG01-V2 to receive Lora Shield data:**
513
514 [[image:image-20221101161951-3.png]]
515
516
517
518 **Test the LG01-V2 to send data:**
519
520 [[image:image-20221101162527-4.png]]
521
522
523 == **7.2 How does LG01-V2 communicate with Heltec LoRa Node** ==
524
525
526 This example describes how to use LG01-V2 and Heltec LoRa Node to set up a LoRa network,
527
528 [[image:image-20221112161111-2.png||height="258" width="692"]]
529
530 (% style="color:red" %)**Prerequisites: The configurations of LG01-V2 and Lora shield must match**
531
532
533 **LG01-V2 configuration:**
534
535 (% class="box infomessage" %)
536 (((
537 AT+FRE=868.100,868.100  ~-~--> TX and RX frequency set: 868100000
538 AT+BW=0,0  ~-~--> TX and RX Bandwidth set: 125kHz
539 AT+SF=12,12  ~-~--> TX and RX Spreading Factor set: SF12
540 AT+POWER=14  ~-~--> TX Power Range
541 AT+CRC=1,1  ~-~--> TX and RX CRC Type
542 AT+HEADER=0,0  ~-~--> TX and RX Header Type
543 AT+CR=1,1  ~-~--> TX and RX Coding Rate
544 AT+IQ=0,0  ~-~--> TX and RX InvertIQ
545 AT+PREAMBLE=8,8  ~-~--> TX and RX Preamble Length set: 8
546 AT+SYNCWORD=0  ~-~-->  Syncword**(0: private，1: public), **the corresponding Lora shield syncword is 0x12
547 AT+RXMOD=65535,0  ~-~-->  Rx Timeout and Reply mode,RX window always open
548 AT+RXDAFORM=1  ~-~--> RX data format**（0: Hex ,1: String）**
549 )))
550
551
552 After we upload the sketch to Heltec LoRa Node, we can see below output from Arduino.
553
554 Lora Shield example: [[attach:LoRa_send_trial.ino||target="_blank"]]
555
556 [[image:image-20221112162733-3.png||height="524" width="927"]]
557
558
559 And we can see the logread of gateway as below, means the packet arrive gateway:
560
561 [[image:image-20221112163119-4.png||height="808" width="560"]]
562
563
564 = (% style="color:inherit; font-family:inherit; font-size:29px" %)**8. Supports**(%%) =
565
566
567 (((
568 **//If you are experiencing issues and can't solve them, you can send mail to [[support@dragino.com>>mailto:support@dragino.com]].//**
569 )))
570
571 (((
572 **//With your question as detailed as possible. We will reply and help you in the shortest.//**
573
574
575 = **9. Reference** =
576
577
578 * Install Tago Core: Refer **Install Tago Core in LPS8v2** in[[ Instruction>>doc:Main.Tago\.IO.WebHome]].
579 * [[Advance OS Reference Guide for LPS8v2>>doc:Main.Armbian OS instruction.WebHome]].
580
581
582 )))
583
584 = **10. Order Info** =
585
586
587 (% style="color:#0000ff" %)**LPS8v2-XXX-YYY**
588
589 (% style="color:#0000ff" %)**XXX**(% style="color:black" %): Frequency Band
590
591 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
592 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
593 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
594 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
595 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
596 * (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
597
598 (% style="color:#0000ff" %)**YYY**(% style="color:black" %): 4G Cellular Option
599
600 * (% style="color:red" %)**E**(%%):  EMEA, Korea, Thailand, India.
601 * (% style="color:red" %)**A**(%%):  North America/ Rogers/AT&T/T-Mobile.
602 * (% style="color:red" %)**AU**(%%): Latin America, New Zeland, Taiwan
603 * (% style="color:red" %)**J**(%%):  Japan, DOCOMO/SoftBank/ KDDI
604
605 More info about valid bands, please see [[EC25-E product page>>url:https://www.quectel.com/product/ec25.htm]].
606
607
608 = **10. Manufacturer Info** =
609
610
611 **Shenzhen Dragino Technology Development co. LTD**
612
613 Room 202, Block B, BCT Incubation Bases (BaoChengTai),  No.8 CaiYunRoad
614
615 LongCheng Street, LongGang District ; Shenzhen 518116,China
616
617
618 = **11. FCC Warning** =
619
620
621 (((
622 This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
623 )))
624
625 (((
626 ~-~- Reorient or relocate the receiving antenna.
627 )))
628
629 (((
630 ~-~- Increase the separation between the equipment and receiver.
631 )))
632
633 (((
634 ~-~- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
635 )))
636
637 (((
638 ~-~- Consult the dealer or an experienced radio/TV technician for help.
639 )))
640
641
642 (((
643 Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
644 )))
645
646
647 (((
648 The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.
649
650
651
652 )))