Last modified by Xiaoling on 2025/04/24 17:18
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11 **Table of Contents:**
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13 {{toc/}}
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16 (((
17 (% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||height="15" role="presentation" title="Click and drag to move" width="15"]]
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28 = 1.  Introduction =
29
30 == 1.1 ​ What is LSN50V2-D2x LoRaWAN Temperature Sensor ==
31
32
33 (((
34 The Dragino LSN50v2-D2x is a (% style="color:#4472c4" %)**LoRaWAN Temperature Sensor**(%%) for Internet of Things solution. It can be used to measure the (% style="color:#4472c4" %)**temperature of air, liquid or object**(%%), and then upload to IoT server via LoRaWAN wireless protocol.
35 )))
36
37 (((
38 The temperature sensor used in LSN50v2-D2x can (% style="color:#4472c4" %)**measure -55°C ~~ 125°C with accuracy ±0.5°C (max ±2.0 °C)**.
39 )))
40
41 (((
42 LSN50v2-D2x supports (% style="color:#4472c4" %)**temperature alarm feature,**(%%) user can set temperature alarm for instant notice.
43 )))
44
45 (((
46 LSN50v2-D2x has max 3 probes which measure maximum 3 temperature points.
47 )))
48
49 (((
50 LSN50v2-D2x is powered by (% style="color:#4472c4" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 10 years. (Actually Battery life depends on the use environment, update period. Please check related Power Analyze report).
51 )))
52
53 (((
54 Each LSN50v2-D2x is pre-load with a set of unique keys for LoRaWAN registration, register these keys to local LoRaWAN server and it will auto connect after power on.
55 )))
56
57
58 [[image:1655889313568-879.png]]
59
60
61 == 1.2  Specifications ==
62
63
64 (% style="color:#037691" %)**Common DC Characteristics:**
65
66 * Supply Voltage: built in 8500mAh Li-SOCI2 battery
67 * Operating Temperature: -40 ~~ 85°C
68
69 (% style="color:#037691" %)**Temperature Sensor:**
70
71 * Range: -55 to + 125°C
72 * Accuracy ±0.5°C (max ±2.0 °C).
73
74 (% style="color:#037691" %)**LoRa Spec:**
75
76 * Frequency Range,
77 ** Band 1 (HF): 862 ~~ 1020 Mhz
78 * 168 dB maximum link budget.
79 * High sensitivity: down to -148 dBm.
80 * Bullet-proof front end: IIP3 = -12.5 dBm.
81 * Excellent blocking immunity.
82 * Built-in bit synchronizer for clock recovery.
83 * Preamble detection.
84 * 127 dB Dynamic Range RSSI.
85 * Automatic RF Sense and CAD with ultra-fast AFC.
86 * LoRaWAN 1.0.3 Specification
87
88 (% style="color:#037691" %)**Power Consumption**
89
90 * Sleeping Mode: 20uA
91 * LoRaWAN Transmit Mode: 125mA @ 20dBm 44mA @ 14dBm
92
93 (% style="display:none" %)
94
95
96 == ​1.3  Features ==
97
98
99 * LoRaWAN v1.0.3 Class A
100 * Ultra-low power consumption
101 * 1 ~~ 3 External Temperature Probes
102 * Measure range -55°C ~~ 125°C
103 * Temperature alarm
104 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
105 * AT Commands to change parameters
106 * Uplink on periodically or Interrupt
107 * Downlink to change configure
108 * 8500mAh Battery for long term use
109
110 (% style="display:none" %)
111
112
113 == 1.4 ​ Applications ==
114
115
116 * Wireless Alarm and Security Systems
117 * Home and Building Automation
118 * Automated Meter Reading
119 * Industrial Monitoring and Control
120 * Long range Irrigation Systems,etc.
121
122 (% style="display:none" %)
123
124
125 == 1.5  Hardware Variant ==
126
127
128 (% border="1" cellspacing="5" style="background-color:#f7faff; width:500px" %)
129 |=(% style="width: 108px;background-color:#4F81BD;color:white" %)Model|=(% style="width: 158px;background-color:#4F81BD;color:white" %)Photo|=(% style="width: 234px;background-color:#4F81BD;color:white" %)Probe Info
130 |(% style="width:108px" %)LSN50v2 D20|(% style="width:138px" %)[[image:1655890296240-127.png]]|(% style="width:203px" %)(((
131 1 x DS28B20 Probe
132
133 Cable Length : 2 meters
134
135 sensor cable is made by Silica Gel for higher temperature tolerance.
136 )))
137 |(% style="width:108px" %)LSN50v2 D22|(% style="width:138px" %)[[image:1655890630424-253.png]]|(% style="width:203px" %)(((
138 2 x DS28B20 Probes
139
140 Cable lengths total 1.5meters per probe
141
142 Cable Drawing: [[See This Link>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSN50v2-D20/Cable_Drawing/&file=CAB0-35IC-K21G-210811.pdf]]
143 )))
144 |(% style="width:108px" %)(((
145 LSN50v2 D23
146 )))|(% style="width:138px" %)[[image:1655890438492-321.png]]|(% style="width:203px" %)(((
147 3 x DS28B20 Probes
148
149 Cable lengths total 1.5meters per probe
150
151 Cable Drawing: [[See This Link>>url:https://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSN50v2-D20/Cable_Drawing/&file=CAB0-35IC-K31G-210811.pdf]]
152 )))
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154 (% style="display:none" %)
155
156
157 == 1.6  Pin Definitions and Switch ==
158
159
160 **Base on LSN50v2 v2.3.a**
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162 (% class="wikigeneratedid" %)
163 [[image:1655890786311-614.png||height="392" width="762"]]
164
165
166 === 1.6.1 Pin Definition ===
167
168
169 The device is pre-configured to connect to temperature sensor. The other pins are not used. If user want to know more about other pins, please refer the user manual of LSn50v2 at: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/>>url:http://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/]]
170
171
172 === 1.6.2 Jumper JP2 ===
173
174
175 Power on Device when put this jumper.
176
177
178 === 1.6.3 BOOT MODE / SW1 ===
179
180
181 ~1. ISP:  upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run.
182
183 2. Flash:  work mode, device starts to work and send out console output for further debug
184
185
186 === 1.6.4 Reset Button ===
187
188
189 Press to reboot the device.
190
191
192 === 1.6.5 LED ===
193
194
195 It will flash:
196
197 1.  When boot the device in flash mode
198
199 2.  Send an uplink packet
200
201
202 == 1.7  Hardware Change log ==
203
204
205 LSN50v2-D20 v1.0:  Release.
206
207
208 = 2.  How to use LSN50v2-D2x? =
209
210 == 2.1  How it works ==
211
212
213 (((
214 (((
215 The LSN50v2-D2x is working as LoRaWAN OTAA Class A end node. Each LSN50v2-D2x is shipped with a worldwide unique set of OTAA and ABP keys. User needs to input the OTAA or ABP keys in the LoRaWAN network server to register. Open the enclosure and power on the LSN50v2-D2x, it will join the LoRaWAN network and start to transmit data. The default period for each uplink is 20 minutes.
216 )))
217 )))
218
219
220 == 2.2  ​Quick guide to connect to LoRaWAN server (OTAA) ==
221
222
223 (((
224 Here is an example for how to join the [[TTN LoRaWAN >>url:http://www.thethingsnetwork.org/]]Server. Below is the network structure, in this demo we use [[DLOS8>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/160-dlos8.html]] as LoRaWAN gateway.
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226 (% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:1655891470063-521.png]](% title="Click and drag to resize" %)​[[image:1655952600869-544.png]]
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229 (% title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)​(%%)​
230
231 (((
232 The DLOS8 is already set to connect to [[TTN >>url:https://www.thethingsnetwork.org/]]. What the rest we need to is register the LSN50V2-D20 to TTN:
233
234
235 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LSN50V2-D2x.
236
237 Each LSN50V2-D2x is shipped with a sticker with the default device EUI as below:
238 )))
239
240 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS25-LBLDS25-LS--LoRaWAN_LiDAR_Distance_Auto-Clean_Sensor_User_Manual/WebHome/image-20230426084152-1.png?width=502&height=233&rev=1.1||alt="图片-20230426084152-1.png"]]
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242 (% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:image-20230426083947-2.png]](% title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)​(%%)​
243
244 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
245
246 **Create the application.**
247
248 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SAC01L_LoRaWAN_Temperature%26Humidity_Sensor_User_Manual/WebHome/image-20250423093843-1.png?width=756&height=264&rev=1.1||alt="image-20250423093843-1.png"]]
249
250 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111305-2.png?width=1000&height=572&rev=1.1||alt="image-20240907111305-2.png"]]
251
252
253 **Add devices to the created Application.**
254
255 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111659-3.png?width=977&height=185&rev=1.1||alt="image-20240907111659-3.png"]]
256
257 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907111820-5.png?width=975&height=377&rev=1.1||alt="image-20240907111820-5.png"]]
258
259
260 **Enter end device specifics manually.**
261
262 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907112136-6.png?width=697&height=687&rev=1.1||alt="image-20240907112136-6.png"]]
263
264
265 **Add DevEUI and AppKey.**
266
267 **Customize a platform ID for the device.**
268
269 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LTC2-LB--LoRaWAN_Temperature_Transmitter_User_Manual/WebHome/image-20240907112427-7.png?rev=1.1||alt="image-20240907112427-7.png"]]
270
271
272 (% style="color:blue" %)**Step 2**(%%):** Add decoder.**
273
274 In TTN, user can add a custom payload so it shows friendly reading.
275
276 Click this link to get the decoder: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder/tree/main/>>url:https://github.com/dragino/dragino-end-node-decoder/tree/main/]]
277
278 Below is TTN screen shot:
279
280 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS25-LBLDS25-LS--LoRaWAN_LiDAR_Distance_Auto-Clean_Sensor_User_Manual/WebHome/image-20241009140556-1.png?width=1184&height=488&rev=1.1||alt="image-20241009140556-1.png" height="488" width="1184"]]
281
282 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS25-LBLDS25-LS--LoRaWAN_LiDAR_Distance_Auto-Clean_Sensor_User_Manual/WebHome/image-20241009140603-2.png?width=1168&height=562&rev=1.1||alt="image-20241009140603-2.png"]](% title="Click and drag to resize" %)​
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284 (% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​
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286 (% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)​
287
288 (% style="color:blue" %)**Step 3**(%%): Power on LSN50v2-D2x
289
290 [[image:1655891678689-137.png]]
291
292 (% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(%%)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]][[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)​(%%)​LSN50V2-D2x will auto join to TTN network via the LoRaWAN coverage by DLOS8. After join success, LSN50V2-D2x will start to uplink temperature value to server.
293
294 (% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% title="Click and drag to resize" %)​(% style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](%%)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% title="Click and drag to resize" %)​​
295
296 == 2.3  ​Uplink Payload ==
297
298 === 2.3.1  Payload Analyze ===
299
300
301 (((
302 Normal Upload Payload:
303 )))
304
305 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
306 |=(% style="width: 74.5px;background-color:#4F81BD;color:white" %)(((
307 **Size(bytes)**
308 )))|=(% style="width: 60px;background-color:#4F81BD;color:white" %)2|=(% style="width: 120px;background-color:#4F81BD;color:white" %)2|=(% style="width: 60px;background-color:#4F81BD;color:white" %)2|=(% style="width: 65px;background-color:#4F81BD;color:white" %)1|=(% style="width: 65px;background-color:#4F81BD;color:white" %)**2**|=(% style="width: 65px;background-color:#4F81BD;color:white" %)2
309 |(% style="width:65px" %)Value|(((
310 [[Battery>>||anchor="HBattery:"]]
311 )))|(% style="width:91px" %)(((
312 [[Temp_ Red or Temp _White>>||anchor="HTemperatureREDorTemperatureWhite:"]]
313 )))|(% style="width:61px" %)(((
314 ignore
315 )))|(% style="width:91px" %)(((
316 [[Alarm Flag>>||anchor="HAlarmFlag26MOD:"]]
317 )))|(% style="width:99px" %)(((
318 [[Temp_White>>||anchor="HTemperatureWhite:"]]
319 )))|(% style="width:97px" %)(((
320 [[Temp_Black>>||anchor="HTemperatureBlack:"]]
321 )))
322
323 [[image:image-20220622180351-1.png||height="589" width="1096"]]
324
325
326 ==== (% style="color:#4472c4" %)**Battery:**(%%) ====
327
328
329 Check the battery voltage.
330
331 Ex1: 0x0B45 = 2885mV
332
333 Ex2: 0x0B49 = 2889mV
334
335
336
337 ==== (% style="color:#4472c4" %)**Temperature RED or Temperature White :**(%%) ====
338
339
340 **This point to the Red probe in LSN50 v2-D20 or the probe of LSN50v2- D22/D23 White**
341
342 [[image:image-20220916152530-2.png]]
343
344
345 **Example**:
346
347 If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
348
349 If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
350
351 (FF3F & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative)
352
353
354
355 ==== (% style="color:#4472c4" %)**Temperature White:**(%%) ====
356
357
358 **This point to the Red probe in LSN50 v2-D22/D23**
359
360
361 **Example**:
362
363 If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
364
365 If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
366
367 (FF3F & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative)
368
369
370
371 ==== (% style="color:#4472c4" %)**Temperature Black:**(%%) ====
372
373
374 **This point to the BLACK probe in LSN50 v2-D23**
375
376
377 **Example**:
378
379 If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
380
381 If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
382
383 (FF3F & 8000：Judge whether the highest bit is 1, when the highest bit is 1, it is negative)
384
385
386
387 ==== (% style="color:#4472c4" %)**Alarm Flag& MOD:**(%%) ====
388
389
390 **Example:**
391
392 If payload & 0x01 = 0x01  **~-~->** This is an Alarm Message
393
394 If payload & 0x01 = 0x00  **~-~->** This is a normal uplink message, no alarm
395
396 If payload >> 2 = 0x00  **~-~->**  means MOD=1, This is a sampling uplink message
397
398 If payload >> 2 = 0x31  **~-~->**  means MOD=31, this message is a reply message for polling, this message contains the alarm settings. see [[this link>>||anchor="HPolltheAlarmsettings:"]] for detail.
399
400
401
402 ==== (% style="color:#4472c4" %)**Decode corresponding probe color：**(%%) ====
403
404
405 **D20:**
406
407 Red <~-~-> C1
408
409 **D22:**
410
411 White <~-~-> C1 Red <~-~-> C2
412
413 **D23:**
414
415 White <~-~->C1 Red <~-~-> C2 Black <~-~-> C3
416
417
418 == 2.3.2  Payload Decoder file ==
419
420
421 (((
422 In TTN, use can add a custom payload so it shows friendly. 
423 )))
424
425 (((
426 In the page **Applications ~-~-> Payload Formats ~-~-> Custom ~-~-> decoder** to add the decoder from:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]
427 )))
428
429
430 (% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​(% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||data-widget="image" draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" tabindex="-1" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% aria-label="Data URI image image widget" contenteditable="false" role="region" style="background-image:url(http://wiki1.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" tabindex="-1" title="Click and drag to resize" %)​
431
432 == 2.4  Temperature Alarm Feature ==
433
434
435 LSN50V2-D20 work flow with Alarm feature.
436
437
438 [[image:image-20220623090437-1.png||height="747" width="1067"]]
439
440
441 (((
442 User can use (% style="color:#4472c4" %)**AT+18ALARM **(%%)command to set the alarm low limit or high limit. Device will check the temperature every minute, if the temperature lower than low limit or greater than high limit. LSN50v2-D20 will send an (% style="color:#4472c4" %)**Alarm packet base on Confirmed Uplink Mode**(%%) to server.
443 )))
444
445
446 Below is an example of the Alarm Packet.
447
448 [[image:image-20220623090437-2.png||height="618" width="1246"]]
449
450
451 == 2.5  ​Configure LSN50v2-D20 ==
452
453
454 LSN50V2-D20 supports configuration via LoRaWAN downlink command or AT Commands.
455
456 * Downlink command instructions for different platform: [[Use Note for Server>>doc:Main.WebHome]](IoT LoRaWAN Server)
457 * AT Command Access Instructions: [[LINK>>||anchor="H4.A0UseATCommand"]]
458
459 There are two parts of commands: General one and Special for this model.
460
461
462 === 2.5.1 General Configure Commands ===
463
464
465 These commands are to configure:
466
467 * General system settings like: uplink interval.
468 * LoRaWAN protocol & radio related command.
469
470 These commands can be found on the wiki:  [[End Device AT Commands and Downlink Commands>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
471
472
473 === 2.5.2 Sensor related commands ===
474
475
476 ==== (% style="color:red" %)**Set Alarm Threshold:**(%%) ====
477
478
479 (% style="color:#4472c4" %)**1.  Set All Probes:**
480
481 (% style="color:#037691" %)**AT+18ALARM=min,max**
482
483 * When min=0, and max≠0, Alarm trigger when higher than max
484 * When min≠0, and max=0, Alarm trigger when lower than min
485 * When min≠0 and max≠0, Alarm trigger when higher than max or lower than min
486
487 **Example:**
488
489 AT+18ALARM=-10,30  ~/~/ Alarm when < -10 or higher than 30.
490
491
492 * (% style="color:#037691" %)**Downlink Payload:**
493
494 0x(0B F6 1E)   ~/~/ Same as AT+18ALARM=-10,30
495
496 (note: 0x1E= 30, 0xF6 means: 0xF6-0x100 = -10)
497
498
499 (% style="color:#4472c4" %)**2.  Set Separate Probe:**
500
501 (% style="color:#037691" %)**AT+18ALARM=min,max,index**
502
503 Index:
504
505 * 1: Temperature_Red
506 * 2: Temperature_White
507 * 3: Temperature_Black
508
509 **Example:**
510
511 AT+18ALARM=-10,30,1   ~/~/ Alarm when temperature_red < -10 or higher than 30.
512
513
514 * (% style="color:#037691" %)**Downlink Payload:**
515
516 0x(0B F6 1E 01)   ~/~/ Same as AT+18ALARM=-10,30,1
517
518 (note: 0x1E= 30, 0xF6 means: 0xF6-0x100 = -10)
519
520
521 ==== (% style="color:red" %)**Set Alarm Interval:**(%%) ====
522
523
524 The shortest time of two Alarm packet. (unit: min)
525
526 * (% style="color:#037691" %)**AT Command:**
527
528 AT+ATDC=30  ~/~/ The shortest interval of two Alarm packets is 30 minutes, Means is there is an alarm packet uplink, there won't be another one in the next 30 minutes.
529
530
531 * (% style="color:#037691" %)**Downlink Payload:**
532
533 0x(0D 00 1E)     **~-~-->** Set AT+ATDC=0x 00 1E = 30 minutes
534
535
536 ==== (% style="color:red" %)**Poll the Alarm settings:**(%%) ====
537
538
539 Send a LoRaWAN downlink to ask device send Alarm settings.
540
541 * (% style="color:#037691" %)**Downlink Payload:**
542
543 0x0E 01
544
545
546 **Example:**
547
548 [[image:1655948182791-225.png]]
549
550
551 **Explain:**
552
553 * Alarm & MOD bit is 0x7C, 0x7C >> 2 = 0x31: Means this message is the Alarm settings message.
554
555 (% style="display:none" %)
556
557
558
559 ==== (% style="color:red" %)**Set Interrupt Mode:**(%%) ====
560
561
562 Feature, Set Interrupt mode for PB14 pin.
563
564 (% style="color:blue" %)**AT Command: AT+INTMOD**
565
566 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
567 |=(% style="width: 148px; background-color: rgb(79, 129, 189); color: white;" %)**Command Example**|=(% style="width: 202px; background-color: rgb(79, 129, 189); color: white;" %)**Function**|=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Response**
568 |(% style="width:148px" %)AT+INTMOD=?|(% style="width:202px" %)Show current interrupt mode|(% style="width:157px" %)(((
569 0
570 OK
571 the mode is 0 =Disable Interrupt
572 )))
573 |(% style="width:148px" %)AT+INTMOD=2|(% style="width:202px" %)(((
574 **0**: Disable Interrupt
575 **1**: Trigger by rising and falling edge
576 **2**: Trigger by falling edge
577 **3**: Trigger by rising edge
578 )))|(% style="width:157px" %)OK
579
580 (% style="color:blue" %)**Downlink Command: 0x06**
581
582 Format: Command Code (0x06) followed by 3 bytes.
583
584 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
585 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
586
587 == 2.6  LED Status ==
588
589
590 LSN50-v2-D20 has an internal LED, it will active in below situation:
591
592 * LED will fast blink 5 times when boot, this means the temperature sensor is detected.
593 * After the fast blinks on boot, the LED will flash once which means device is trying to send Join Packet to the network.
594 * If device successful join LoRaWAN network, the LED will be solid on for 5 seconds.
595
596 (% style="display:none" %)
597
598
599 == 2.7  Button Function ==
600
601
602 (((
603 **Internal RESET button:**
604 )))
605
606 (((
607 Press this button will reboot the device. Device will process OTAA Join to network again.
608 )))
609
610
611 == (% style="color:inherit; font-family:inherit; font-size:26px" %)2.8  ​Firmware Change Log(%%) ==
612
613
614 (((
615 **Firmware download link:  **[[https:~~/~~/www.dropbox.com/sh/bu7piiuwios42as/AACvP3nLaC7_oDpjnYJNBOr7a?dl=0>>https://www.dropbox.com/sh/bu7piiuwios42as/AACvP3nLaC7_oDpjnYJNBOr7a?dl=0]]
616 )))
617
618 (((
619 **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
620
621
622 )))
623
624 = 3. Battery & Power Consumption =
625
626
627 LSN50v2-D2x uses ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
628
629 [[**Battery Info & Power Consumption Analyze**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
630
631
632 = 4.  Use AT Command =
633
634 == 4.1  Access AT Commands ==
635
636
637 User can use a USB to TTL adapter to connect to LSN50V2-D20 to use AT command to configure the device. Example is as below:
638
639 [[image:image-20220623095817-4.png||height="665" width="1032"]]
640
641 (% style="display:none" %) (%%)
642
643 [[image:image-20220623100044-7.png]]
644
645
646 = 5.  FAQ =
647
648 == 5.1 What is the frequency range of LSN50v2-D20? ==
649
650
651 Different LSN50V2-D20 version supports different frequency range, below is the table for the working frequency and recommend bands for each model:
652
653 (% border="1" cellspacing="3" style="width:510px" %)
654 |(% style="background-color:#4f81bd; color:white; width:70px" %)**Version**|(% style="background-color:#4f81bd; color:white; width:70px" %)**LoRa IC**|(% style="background-color:#4f81bd; color:white; width:124px" %)**Working Frequency**|(% style="background-color:#4f81bd; color:white; width:123px" %)**Best Tune Frequency**|(% style="background-color:#4f81bd; color:white; width:123px" %)**Recommend Bands**
655 |(% style="width:70px" %)433|(% style="width:72px" %)SX1278|(% style="width:153px" %)Band2(LF): 410 ~~525 Mhz|(% style="width:163px" %)433Mhz|(% style="width:152px" %)CN470/EU433
656 |(% style="width:70px" %)868|(% style="width:72px" %)SX1276|(% style="width:153px" %)Band1(HF):862~~1020 Mhz|(% style="width:163px" %)868Mhz|(% style="width:152px" %)EU868/IN865/RU864
657 |(% style="width:70px" %)915|(% style="width:72px" %)SX1276|(% style="width:153px" %)Band1(HF):862 ~~1020 Mhz|(% style="width:163px" %)915Mhz|(% style="width:152px" %)(((
658 AS923/AU915/
659 KR920/US915
660 )))
661
662 == 5.2 What is the Frequency Plan? ==
663
664
665 Please refer Dragino End Node Frequency Plan:  [[End Device Frequency Band>>doc:Main.End Device Frequency Band.WebHome]]
666
667
668 == 5.3 How to update the firmware? ==
669
670
671 (((
672 User can upgrade the firmware for:
673 )))
674
675 * (((
676 (((
677 Support new features
678 )))
679 )))
680 * (((
681 (((
682 For bug fix
683 )))
684 )))
685 * (((
686 (((
687 Change LoRaWAN bands.
688 )))
689 )))
690
691 (((
692 Please see this link for how to upgrade: ** **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
693 )))
694
695
696 = 6.  Trouble Shooting =
697
698 == 6.1  AT Command input doesn't work ==
699
700
701 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.
702
703
704 == 6.2  Abnormal temperature ==
705
706
707 When the temperature is displayed as - 0.1, it means that the sensor is not connected.
708
709 Please check whether the wiring is loose/Blocked by the insulation layer of the wire/pin damaged
710
711
712 = 7.  Order Info =
713
714
715 **Part Number:** (% style="color:blue" %)**LSN50V2-D20-XXX (Signal Probe)**
716
717 **~ Or (% style="color:blue" %)LSN50V2-D22-XXX (Dual Probe)(%%)**
718
719 **~ Or (% style="color:blue" %)LSN50V2-D23-XXX (Triple Probe)(%%)**
720
721
722 (% style="color:blue" %)**XXX**(%%)**: **The default frequency band
723
724 * (% style="color:red" %)**AS923 **(%%)**:** LoRaWAN AS923 band
725 * (% style="color:red" %)**AU915 **(%%)**:** LoRaWAN AU915 band
726 * (% style="color:red" %)**EU433 **(%%)**:** LoRaWAN EU433 band
727 * (% style="color:red" %)**EU868 **(%%)**:** LoRaWAN EU868 band
728 * (% style="color:red" %)**KR920 **(%%)**:** LoRaWAN KR920 band
729 * (% style="color:red" %)**US915 **(%%)**:** LoRaWAN US915 band
730 * (% style="color:red" %)**IN865 **(%%)**:**  LoRaWAN IN865 band
731 * (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
732
733 (% style="display:none" %)
734
735
736 = 8. ​ Packing Info =
737
738
739 (((
740 **Package Includes**:
741 )))
742
743 * (((
744 LSN50v2-D2x LoRaWAN Temperature Sensor x 1
745 )))
746
747 (((
748 **Dimension and weight**:
749 )))
750
751 * Device Size: cm
752 * Device Weight: g
753 * Package Size / pcs : cm
754 * Weight / pcs : g
755
756 (% style="display:none" %)
757
758
759 = 9.  ​Support =
760
761
762 * 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.
763
764 * 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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