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Last modified by Xiaoling on 2023/05/26 14:19
From version 72.1
edited by Edwin Chen
on 2022/07/03 00:02
Change comment: There is no comment for this version
To version 166.2
edited by Xiaoling
on 2022/11/14 11:41
Change comment: There is no comment for this version

Summary

Details

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Title
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1 -LA66 LoRaWAN Module
1 +LA66 LoRaWAN Shield User Manual
Author
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1 -XWiki.Edwin
1 +XWiki.Xiaoling
Content
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1 -{{box cssClass="floatinginfobox" title="**Contents**"}}
1 +
2 +
3 +**Table of Contents:**
4 +
2 2  {{toc/}}
3 -{{/box}}
4 4  
5 -= LA66 LoRaWAN Module =
6 6  
7 -== What is LA66 LoRaWAN Module ==
8 8  
9 -(% style="color:blue" %)**Dragino LA66**(%%) is a small wireless LoRaWAN module that offers a very compelling mix of long-range, low power consumption, and secure data transmission. It is designed to facilitate developers to quickly deploy industrial-level LoRaWAN and IoT solutions. It helps users to turn the idea into a practical application and make the Internet of Things a reality. It is easy to create and connect your things everywhere.
10 10  
11 -(% style="color:blue" %)**LA66**(%%) is a ready-to-use module that includes the (% style="color:blue" %)**LoRaWAN v1.0.4 protocol**(%%). The LoRaWAN stack used in LA66 is used in more than 1 million LoRaWAN End Devices deployed world widely. This mature LoRaWAN stack greatly reduces the risk to make stable LoRaWAN Sensors to support different LoRaWAN servers and different countries' standards. External MCU can use AT command to call LA66 and start to transmit data via the LoRaWAN protocol.
10 += 1.  LA66 LoRaWAN Shield =
12 12  
12 +
13 +== 1.1  Overview ==
14 +
15 +
16 +(((
17 +[[image:image-20220715000826-2.png||height="145" width="220"]]
18 +)))
19 +
20 +(((
21 +
22 +)))
23 +
24 +(((
25 +(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%) is the Arduino shield base on LA66. Users can use LA66 LoRaWAN Shield to rapidly add LoRaWAN or peer-to-peer LoRa wireless function to  Arduino projects.
26 +)))
27 +
28 +(((
29 +(((
30 +(% style="color:blue" %)**LA66**(%%) is a ready-to-use module that includes the (% style="color:blue" %)**LoRaWAN v1.0.3 protocol**(%%). The LoRaWAN stack used in LA66 is used in more than 1 million LoRaWAN End Devices deployed world widely.  This mature LoRaWAN stack greatly reduces the risk to make stable LoRaWAN Sensors to support different LoRaWAN servers and different countries' standards. External MCU can use AT command to call LA66 and start to transmit data via the LoRaWAN protocol.
31 +)))
32 +)))
33 +
34 +(((
35 +(((
13 13  Each LA66 module includes a (% style="color:blue" %)**world-unique OTAA key**(%%) for LoRaWAN registration.
37 +)))
38 +)))
14 14  
40 +(((
41 +(((
15 15  Besides the support of the LoRaWAN protocol, LA66 also supports (% style="color:blue" %)**open-source peer-to-peer LoRa Protocol**(%%) for the none-LoRaWAN application.
43 +)))
44 +)))
16 16  
46 +(((
47 +(((
17 17  LA66 is equipped with (% style="color:blue" %)**TCXO crystal**(%%) which ensures the module can achieve stable performance in extreme temperatures.
49 +)))
50 +)))
18 18  
19 19  
20 -== Features ==
21 21  
22 -* Support LoRaWAN v1.0.4 protocol
54 +== 1.2  Features ==
55 +
56 +
57 +* Arduino Shield base on LA66 LoRaWAN module
58 +* Support LoRaWAN v1.0.3 protocol
23 23  * Support peer-to-peer protocol
24 24  * TCXO crystal to ensure RF performance on low temperature
25 -* SMD Antenna pad and i-pex antenna connector
61 +* SMA connector
26 26  * Available in different frequency LoRaWAN frequency bands.
27 27  * World-wide unique OTAA keys.
28 28  * AT Command via UART-TTL interface
... ... @@ -29,8 +29,11 @@
29 29  * Firmware upgradable via UART interface
30 30  * Ultra-long RF range
31 31  
32 -== Specification ==
33 33  
69 +
70 +== 1.3  Specification ==
71 +
72 +
34 34  * CPU: 32-bit 48 MHz
35 35  * Flash: 256KB
36 36  * RAM: 64KB
... ... @@ -49,288 +49,357 @@
49 49  * LoRa Rx current: <9 mA
50 50  * I/O Voltage: 3.3v
51 51  
52 -== AT Command ==
53 53  
54 -AT Command is valid over Main TXD and Main RXD. Serial Baud Rate is 9600. AT commands can be found in AT Command documents.
55 55  
93 +== 1.4  Pin Mapping & LED ==
56 56  
57 -== Dimension ==
58 58  
59 -[[image:image-20220517072526-1.png]]
96 +[[image:image-20220817085048-1.png||height="533" width="734"]]
60 60  
61 61  
62 -== Pin Mapping ==
63 63  
64 -[[image:image-20220523101537-1.png]]
100 +~1. The LED lights up red when there is an upstream data packet
101 +2. When the network is successfully connected, the green light will be on for 5 seconds
102 +3. Purple light on when receiving downlink data packets
65 65  
66 -== Land Pattern ==
67 67  
68 -[[image:image-20220517072821-2.png]]
105 +[[image:image-20220820112305-1.png||height="515" width="749"]]
69 69  
70 70  
71 -== Order Info ==
72 72  
73 -Part Number: **LA66-XXX**
109 +== 1.5  Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
74 74  
75 -**XX**: The default frequency band
76 76  
77 -* **AS923**: LoRaWAN AS923 band
78 -* **AU915**: LoRaWAN AU915 band
79 -* **EU433**: LoRaWAN EU433 band
80 -* **EU868**: LoRaWAN EU868 band
81 -* **KR920**: LoRaWAN KR920 band
82 -* **US915**: LoRaWAN US915 band
83 -* **IN865**: LoRaWAN IN865 band
84 -* **CN470**: LoRaWAN CN470 band
85 -* **PP**: Peer to Peer LoRa Protocol
112 +**Show connection diagram：**
86 86  
87 87  
88 -= LA66 LoRaWAN Shield =
115 +[[image:image-20220723170210-2.png||height="908" width="681"]]
89 89  
90 -== Overview ==
91 91  
92 -LA66 LoRaWAN Shield is the Arduino shield base on LA66. Users can use LA66 LoRaWAN Shield to rapidly add LoRaWAN or peer-to-peer LoRa wireless function to  Arduino projects.
93 93  
119 +(% style="color:blue" %)**1.  open Arduino IDE**
94 94  
95 -== Features ==
96 96  
97 -* Arduino Shield base on LA66 LoRaWAN module
98 -* Support LoRaWAN v1.0.4 protocol
99 -* Support peer-to-peer protocol
100 -* TCXO crystal to ensure RF performance on low temperature
101 -* SMA connector
102 -* Available in different frequency LoRaWAN frequency bands.
103 -* World-wide unique OTAA keys.
104 -* AT Command via UART-TTL interface
105 -* Firmware upgradable via UART interface
106 -* Ultra-long RF range
122 +[[image:image-20220723170545-4.png]]
107 107  
108 -== Specification ==
109 109  
110 -* CPU: 32-bit 48 MHz
111 -* Flash: 256KB
112 -* RAM: 64KB
113 -* Input Power Range: 1.8v ~~ 3.7v
114 -* Power Consumption: < 4uA.
115 -* Frequency Range: 150 MHz ~~ 960 MHz
116 -* Maximum Power +22 dBm constant RF output
117 -* High sensitivity: -148 dBm
118 -* Temperature:
119 -** Storage: -55 ~~ +125℃
120 -** Operating: -40 ~~ +85℃
121 -* Humidity:
122 -** Storage: 5 ~~ 95% (Non-Condensing)
123 -** Operating: 10 ~~ 95% (Non-Condensing)
124 -* LoRa Tx Current: <90 mA at +17 dBm, 108 mA at +22 dBm
125 -* LoRa Rx current: <9 mA
126 -* I/O Voltage: 3.3v
127 127  
128 -== Pin Mapping & LED ==
126 +(% style="color:blue" %)**2.  Open project**
129 129  
130 -== Example: Use AT Command to communicate with LA66 module via Arduino UNO. ==
131 131  
132 -== Example: Join TTN network and send an uplink message, get downlink message. ==
129 +LA66-LoRaWAN-shield-AT-command-via-Arduino-UNO source code link: [[https:~~/~~/www.dropbox.com/sh/hgtycj0go4tka2r/AAACRRIRriMAudB2m3ThH7Sba?dl=0 >>https://www.dropbox.com/sh/hgtycj0go4tka2r/AAACRRIRriMAudB2m3ThH7Sba?dl=0]]
133 133  
134 -== Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in DataCake. ==
131 +[[image:image-20220726135239-1.png]]
135 135  
136 -== Upgrade Firmware of LA66 LoRaWAN Shield ==
137 137  
138 -=== what needs to be used ===
139 139  
140 -1.LA66 LoRaWAN Shield that needs to be upgraded
135 +(% style="color:blue" %)**3.  Click the button marked 1 in the figure to compile, and after the compilation is complete, click the button marked 2 in the figure to upload**
141 141  
142 -2.Arduino
143 143  
144 -3.USB TO TTL
138 +[[image:image-20220726135356-2.png]]
145 145  
146 -[[image:image-20220602100052-2.png]]
147 147  
148 -=== Wiring Schematic ===
149 149  
150 -[[image:image-20220602101311-3.png]]
142 +(% style="color:blue" %)**4.  After the upload is successful, open the serial port monitoring and send the AT command**
151 151  
152 -LA66 LoRaWAN Shield  >>>>>>>>>>>>USB TTL
153 153  
154 -GND  >>>>>>>>>>>>GND
145 +[[image:image-20220723172235-7.png||height="480" width="1027"]]
155 155  
156 -TXD  >>>>>>>>>>>>TXD
157 157  
158 -RXD  >>>>>>>>>>>>RXD
159 159  
160 -JP6 of LA66 LoRaWAN Shield needs to be connected with yellow jumper cap
149 +== 1.6  Example: Join TTN network and send an uplink message, get downlink message. ==
161 161  
162 -Connect to the PC after connecting the wires
163 163  
164 -[[image:image-20220602102240-4.png]]
152 +(% style="color:blue" %)**1.  Open project**
165 165  
166 -=== Upgrade steps ===
167 167  
168 -==== Dial the SW1 of the LA66 LoRaWAN Shield to the ISP's location as shown in the figure below ====
155 +Join-TTN-network source code link: [[https:~~/~~/www.dropbox.com/sh/hgtycj0go4tka2r/AAACRRIRriMAudB2m3ThH7Sba?dl=0 >>https://www.dropbox.com/sh/hgtycj0go4tka2r/AAACRRIRriMAudB2m3ThH7Sba?dl=0]]
169 169  
170 -[[image:image-20220602102824-5.png]]
171 171  
172 -==== Press the RST switch on the LA66 LoRaWAN Shield once ====
158 +[[image:image-20220723172502-8.png]]
173 173  
174 -[[image:image-20220602104701-12.png]]
175 175  
176 -==== Open the upgrade application software ====
177 177  
178 -Software download link:  [[https:~~/~~/www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/>>https://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Utility/LSN50N/]]
162 +(% style="color:blue" %)**2.  Same steps as 1.5,after opening the serial port monitoring, it will automatically connect to the network and send packets**
179 179  
180 -[[image:image-20220602103227-6.png]]
181 181  
182 -[[image:image-20220602103357-7.png]]
165 +[[image:image-20220723172938-9.png||height="652" width="1050"]]
183 183  
184 -===== Select the COM port corresponding to USB TTL =====
185 185  
186 -[[image:image-20220602103844-8.png]]
187 187  
188 -===== Select the bin file to burn =====
169 +== 1.7  Example: Log Temperature Sensor(DHT11) and send data to TTN, show it in Node-RED. ==
189 189  
190 -[[image:image-20220602104144-9.png]]
191 191  
192 -[[image:image-20220602104251-10.png]]
172 +(% style="color:blue" %)**1.  Open project**
193 193  
194 -[[image:image-20220602104402-11.png]]
195 195  
196 -===== Click to start the download =====
175 +Log-Temperature-Sensor-and-send-data-to-TTN source code link: [[https:~~/~~/www.dropbox.com/sh/hgtycj0go4tka2r/AAACRRIRriMAudB2m3ThH7Sba?dl=0>>https://www.dropbox.com/sh/hgtycj0go4tka2r/AAACRRIRriMAudB2m3ThH7Sba?dl=0]]
197 197  
198 -[[image:image-20220602104923-13.png]]
199 199  
200 -===== The following figure appears to prove that the burning is in progress =====
178 +[[image:image-20220723173341-10.png||height="581" width="1014"]]
201 201  
202 -[[image:image-20220602104948-14.png]]
203 203  
204 -===== The following picture appears to prove that the burning is successful =====
205 205  
206 -[[image:image-20220602105251-15.png]]
182 +(% style="color:blue" %)**2.  Same steps as 2.5,after opening the serial port monitoring, it will automatically connect to the network and send packets**
207 207  
208 -(% class="wikigeneratedid" %)
209 -= =
210 210  
211 -== Order Info ==
185 +[[image:image-20220723173950-11.png||height="665" width="1012"]]
212 212  
213 -Part Number: **LA66-LoRaWAN-Shield-XXX**
214 214  
215 -**XX**: The default frequency band
216 216  
217 -* **AS923**: LoRaWAN AS923 band
218 -* **AU915**: LoRaWAN AU915 band
219 -* **EU433**: LoRaWAN EU433 band
220 -* **EU868**: LoRaWAN EU868 band
221 -* **KR920**: LoRaWAN KR920 band
222 -* **US915**: LoRaWAN US915 band
223 -* **IN865**: LoRaWAN IN865 band
224 -* **CN470**: LoRaWAN CN470 band
225 -* **PP**: Peer to Peer LoRa Protocol
226 226  
227 227  
228 -(% class="wikigeneratedid" %)
229 -== Package Info ==
191 +(% style="color:blue" %)**3.  Integration into Node-red via TTNV3**
230 230  
231 -* LA66 LoRaWAN Shield x 1
232 -* RF Antenna x 1
233 233  
194 +For the usage of Node-RED, please refer to: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Node-RED/>>http://wiki.dragino.com/xwiki/bin/view/Main/Node-RED/]]
234 234  
235 235  
197 +[[image:image-20220723175700-12.png||height="602" width="995"]]
236 236  
237 237  
238 -= LA66 USB LoRaWAN Adapter =
239 239  
240 -LA66 USB LoRaWAN Adapter is the USB Adapter for LA66, it combines a USB TTL Chip and LA66 module which can easy to test the LoRaWAN feature by using PC or embedded device which has USB Interface.
201 +== 1.8  Example: How to join helium ==
241 241  
242 -Before use, please make sure that the computer has installed the CP2102 driver
243 243  
244 -== Pin Mapping & LED ==
204 +(% style="color:blue" %)**1.  Create a new device.**
245 245  
246 -== Example Send & Get Messages via LoRaWAN in PC ==
247 247  
248 -Connect the LA66 LoRa Shield to the PC
207 +[[image:image-20220907165500-1.png||height="464" width="940"]]
249 249  
250 -[[image:image-20220602171217-1.png||height="615" width="915"]]
251 251  
252 -Open the serial port tool
253 253  
254 -[[image:image-20220602161617-8.png]]
211 +(% style="color:blue" %)**2.  Save the device after filling in the necessary information.**
255 255  
256 -[[image:image-20220602161718-9.png||height="529" width="927"]]
257 257  
258 -Press the reset switch RST on the LA66 LoRa Shield.
214 +[[image:image-20220907165837-2.png||height="375" width="809"]]
259 259  
260 -The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
261 261  
262 -[[image:image-20220602161935-10.png]]
263 263  
264 -send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
218 +(% style="color:blue" %)**3.  Use AT commands.**
265 265  
266 -example: AT+SENDB=01,02,8,05820802581ea0a5
267 267  
268 -[[image:image-20220602162157-11.png]]
221 +[[image:image-20220602100052-2.png||height="385" width="600"]]
269 269  
270 -Check to see if TTN received the message
271 271  
272 -[[image:image-20220602162331-12.png||height="547" width="1044"]]
273 273  
274 -== Example Send & Get Messages via LoRaWAN in RPi ==
225 +(% style="color:#0000ff" %)**4.  Use command AT+CFG to get device configuration**
275 275  
276 -Connect the LA66 LoRa Shield to the RPI
277 277  
278 -[[image:image-20220602171233-2.png||height="592" width="881"]]
228 +[[image:image-20220907170308-3.png||height="556" width="617"]]
279 279  
280 -Log in to the RPI's terminal and connect to the serial port
281 281  
282 -[[image:image-20220602153146-3.png]]
283 283  
284 -Press the reset switch RST on the LA66 LoRa Shield.
285 -The following picture appears to prove that the LA66 LoRa Shield successfully entered the network
232 +(% style="color:blue" %)**5.  Network successfully.**
286 286  
287 -[[image:image-20220602154928-5.png]]
288 288  
289 -send instructions: AT+SENDB=<confirn_status>,<Fport>,<data_len>,<data>
235 +[[image:image-20220907170436-4.png]]
290 290  
291 -example: AT+SENDB=01,02,8,05820802581ea0a5
292 292  
293 -[[image:image-20220602160339-6.png]]
294 294  
295 -Check to see if TTN received the message
239 +(% style="color:blue" %)**6.  Send uplink using command**
296 296  
297 -[[image:image-20220602160627-7.png||height="468" width="1013"]]
298 298  
299 -=== Install Minicom ===
242 +[[image:image-20220912084334-1.png]]
300 300  
301 -Enter the following command in the RPI terminal
302 302  
303 -apt update
245 +[[image:image-20220912084412-3.png]]
304 304  
305 -[[image:image-20220602143155-1.png]]
306 306  
307 -apt install minicom
308 308  
309 -[[image:image-20220602143744-2.png]]
249 +[[image:image-20220907170744-6.png||height="242" width="798"]]
310 310  
311 -=== Send PC's CPU/RAM usage to TTN via script. ===
312 312  
313 -==== Take python as an example： ====
314 314  
315 -===== Preconditions: =====
253 +== 1.9  Upgrade Firmware of LA66 LoRaWAN Shield ==
316 316  
317 -1.LA66 USB LoRaWAN Adapter works fine
318 318  
319 -2.LA66 USB LoRaWAN Adapter  is registered with TTN
256 +=== 1.9.1  Items needed for update ===
320 320  
321 -===== Steps for usage =====
322 322  
323 -1.Press the reset switch RESET on the LA66 USB LoRaWAN Adapter
259 +1. LA66 LoRaWAN Shield
260 +1. Arduino
261 +1. USB TO TTL Adapter
324 324  
325 -2.Run the script and see the TTN
263 +[[image:image-20220602100052-2.png||height="385" width="600"]]
326 326  
327 -[[image:image-20220602115852-3.png]]
328 328  
329 329  
267 +=== 1.9.2  Connection ===
330 330  
331 -== Example: LA66 USB Module got a message from LA66 LoRa Shield and send the sensor data to NodeRed. ==
332 332  
270 +[[image:image-20220602101311-3.png||height="276" width="600"]]
333 333  
334 -== Upgrade Firmware of LA66 USB LoRaWAN Adapter ==
335 335  
336 -
273 +(((
274 +(% style="color:blue" %)**LA66 LoRaWAN Shield**(%%)  **<->** (% style="color:blue" %)**USB TTL**
275 +)))
276 +
277 +(((
278 +(% style="background-color:yellow" %)**GND  <-> GND
279 +TXD  <->  TXD
280 +RXD  <->  RXD**
281 +)))
282 +
283 +
284 +Put a jumper cap on JP6 of LA66 LoRaWAN Shield. ( the jumper is to power on LA66 module)
285 +
286 +Connect USB TTL Adapter to PC after connecting the wires
287 +
288 +
289 +[[image:image-20220602102240-4.png||height="304" width="600"]]
290 +
291 +
292 +
293 +=== 1.9.3  Upgrade steps ===
294 +
295 +
296 +
297 +==== (% style="color:blue" %)**1.  Switch SW1 to put in ISP position**(%%) ====
298 +
299 +
300 +[[image:image-20220602102824-5.png||height="306" width="600"]]
301 +
302 +
303 +
304 +
305 +==== (% style="color:blue" %)**2.  Press the RST switch once**(%%) ====
306 +
307 +
308 +[[image:image-20220817085447-1.png]]
309 +
310 +
311 +
312 +
313 +==== (% style="color:blue" %)**3.  Open the Upgrade tool (Tremo Programmer) in PC and Upgrade**(%%) ====
314 +
315 +
316 +
317 +(((
318 +(% style="color:blue" %)**1.  Software download link:  **(%%)**[[https:~~/~~/www.dropbox.com/sh/j0qyc7a9ejit7jk/AACtx2tK4gEv6YFXMIVUM4dLa?dl=0>>https://www.dropbox.com/sh/j0qyc7a9ejit7jk/AACtx2tK4gEv6YFXMIVUM4dLa?dl=0]]**
319 +)))
320 +
321 +
322 +[[image:image-20220602103227-6.png]]
323 +
324 +
325 +[[image:image-20220602103357-7.png]]
326 +
327 +
328 +
329 +(% class="wikigeneratedid" id="HSelecttheCOMportcorrespondingtoUSBTTL" %)
330 +(% style="color:blue" %)**2.  Select the COM port corresponding to USB TTL**
331 +
332 +
333 +[[image:image-20220602103844-8.png]]
334 +
335 +
336 +
337 +(% class="wikigeneratedid" id="HSelectthebinfiletoburn" %)
338 +(% style="color:blue" %)**3.  Select the bin file to burn**
339 +
340 +
341 +[[image:image-20220602104144-9.png]]
342 +
343 +
344 +[[image:image-20220602104251-10.png]]
345 +
346 +
347 +[[image:image-20220602104402-11.png]]
348 +
349 +
350 +
351 +(% class="wikigeneratedid" id="HClicktostartthedownload" %)
352 +(% style="color:blue" %)**4.  Click to start the download**
353 +
354 +
355 +[[image:image-20220602104923-13.png]]
356 +
357 +
358 +
359 +(% class="wikigeneratedid" id="HThefollowingfigureappearstoprovethattheburningisinprogress" %)
360 +(% style="color:blue" %)**5.  Check update process**
361 +
362 +
363 +[[image:image-20220602104948-14.png]]
364 +
365 +
366 +
367 +(% class="wikigeneratedid" id="HThefollowingpictureappearstoprovethattheburningissuccessful" %)
368 +(% style="color:blue" %)**The following picture shows that the burning is successful**
369 +
370 +
371 +[[image:image-20220602105251-15.png]]
372 +
373 +
374 +
375 += 2.  FAQ =
376 +
377 +
378 +== 2.1  How to Compile Source Code for LA66? ==
379 +
380 +
381 +Compile and Upload Code to ASR6601 Platform ：[[Instruction>>Main.User Manual for LoRaWAN End Nodes.LA66 LoRaWAN Module.Compile and Upload Code to ASR6601 Platform.WebHome]]
382 +
383 +
384 +
385 +== 2.2  Where to find Peer-to-Peer firmware of LA66? ==
386 +
387 +
388 +Instruction for LA66 Peer to Peer firmware :[[ Instruction >>doc:.Instruction for LA66 Peer to Peer firmware.WebHome]]
389 +
390 +
391 +
392 += 3.  Order Info =
393 +
394 +
395 +**Part Number:**   (% style="color:blue" %)**LA66-LoRaWAN-Shield-XXX** (%%)
396 +
397 +
398 +(% style="color:blue" %)**XXX**(%%): The default frequency band
399 +
400 +* (% style="color:red" %)**AS923**(%%):  LoRaWAN AS923 band
401 +* (% style="color:red" %)**AU915**(%%):  LoRaWAN AU915 band
402 +* (% style="color:red" %)**EU433**(%%):  LoRaWAN EU433 band
403 +* (% style="color:red" %)**EU868**(%%):  LoRaWAN EU868 band
404 +* (% style="color:red" %)**KR920**(%%):  LoRaWAN KR920 band
405 +* (% style="color:red" %)**US915**(%%):  LoRaWAN US915 band
406 +* (% style="color:red" %)**IN865**(%%):  LoRaWAN IN865 band
407 +* (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
408 +* (% style="color:red" %)**PP**(%%):  Peer to Peer LoRa Protocol
409 +
410 +
411 +
412 += 4.  Reference =
413 +
414 +
415 +* Hardware Design File for LA66 LoRaWAN Shield : [[Download>>https://www.dropbox.com/sh/a3wbmdcvqjxaqw5/AADZfvAiykJTK624RgMquH86a?dl=0]]
416 +
417 +
418 +
419 += 5.  FCC Statement =
420 +
421 +
422 +(% style="color:red" %)**FCC Caution:**
423 +
424 +Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
425 +
426 +This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
427 +
428 +
429 +(% style="color:red" %)**IMPORTANT NOTE: **
430 +
431 +(% style="color:red" %)**Note:**(%%) 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:
432 +
433 +—Reorient or relocate the receiving antenna.
434 +
435 +—Increase the separation between the equipment and receiver.
436 +
437 +—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
438 +
439 +—Consult the dealer or an experienced radio/TV technician for help.
440 +
441 +
442 +(% style="color:red" %)**FCC Radiation Exposure Statement: **
443 +
444 +This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.This equipment should be installed and operated with minimum distance 20cm between the radiator& your body. 
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