Version 27.1 by Ellie Zhang on 2023/05/06 14:37

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Ellie Zhang 26.1 1 (% style="text-align:center" %)
2 [[image:S31-B.jpg]]
Edwin Chen 1.1 3
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Ellie Zhang 26.1 5
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Edwin Chen 1.1 7 **Table of Contents:**
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9 {{toc/}}
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15
16 = 1. Introduction =
17
Edwin Chen 2.1 18 == 1.1 What is S31x-LB LoRaWAN Temperature & Humidity Sensor ==
Edwin Chen 1.1 19
20
Xiaoling 14.34 21 (((
Edwin Chen 2.1 22 The Dragino S31x-LB is a (% style="color:blue" %)**LoRaWAN Temperature and Humidity Sensor**(%%) for Internet of Things solution. It is used to measure the (% style="color:blue" %)**surrounding environment temperature and relative air humidity precisely**(%%), and then upload to IoT server via LoRaWAN wireless protocol.
Xiaoling 14.34 23 )))
Edwin Chen 1.1 24
Xiaoling 14.34 25 (((
Edwin Chen 4.1 26 The temperature & humidity sensor used in S31x-LB is SHT31, which is fully calibrated, linearized, and temperature compensated digital output from Sensirion, it provides a strong reliability and long-term stability. The SHT31 is fixed in a (% style="color:blue" %)**waterproof anti-condensation casing**(%%) for long term use.
Xiaoling 14.34 27 )))
Edwin Chen 1.1 28
Xiaoling 14.34 29 (((
Edwin Chen 2.1 30 The LoRa wireless technology used in S31x-LB allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
Xiaoling 14.34 31 )))
Edwin Chen 1.1 32
Xiaoling 14.34 33 (((
Edwin Chen 2.1 34 S31x-LB supports (% style="color:blue" %)**Temperature & Humdity alarm feature,**(%%) user can set temperature alarm for instant notice. S31x-LB supports Datalog feature, it can save the data when there is no LoRaWAN network and uplink when network recover.
Xiaoling 14.34 35 )))
Edwin Chen 1.1 36
Xiaoling 14.34 37 (((
Edwin Chen 2.1 38 S31x-LB has max 3 probes which measure maximum 3 temperature points.
Xiaoling 14.34 39 )))
Edwin Chen 1.1 40
Xiaoling 14.34 41 (((
Edwin Chen 2.1 42 S31x-LB (% style="color:blue" %)**supports BLE configure**(%%) and (% style="color:blue" %)**wireless OTA update**(%%) which make user easy to use.
Xiaoling 14.34 43 )))
Edwin Chen 1.1 44
Xiaoling 14.34 45 (((
Edwin Chen 2.1 46 S31x-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
Xiaoling 14.34 47 )))
Edwin Chen 1.1 48
Xiaoling 14.34 49 (((
Edwin Chen 2.1 50 Each S31x-LB is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
Xiaoling 14.34 51 )))
Edwin Chen 1.1 52
53
54 == 1.2 ​Features ==
55
56 * LoRaWAN 1.0.3 Class A
57 * Ultra-low power consumption
Edwin Chen 5.1 58 * External 3 meters SHT31 probe (For S31-LB)
Edwin Chen 1.1 59 * Measure range -55°C ~~ 125°C
Edwin Chen 5.1 60 * Temperature & Humidity alarm
Edwin Chen 1.1 61 * Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
62 * Support Bluetooth v5.1 and LoRaWAN remote configure
63 * Support wireless OTA update firmware
64 * Uplink on periodically
65 * Downlink to change configure
66 * 8500mAh Battery for long term use
67
Xiaoling 20.2 68
Edwin Chen 1.1 69 == 1.3 Specification ==
70
71
72 (% style="color:#037691" %)**Common DC Characteristics:**
73
74 * Supply Voltage: built in 8500mAh Li-SOCI2 battery , 2.5v ~~ 3.6v
75 * Operating Temperature: -40 ~~ 85°C
76
77 (% style="color:#037691" %)**Temperature Sensor:**
78
Edwin Chen 5.1 79 * Range: -40 to + 80°C
80 * Accuracy: ±0.2 @ 0-90 °C
81 * Resolution: 0.1°C
82 * Long Term Shift: <0.03 °C/yr
Edwin Chen 1.1 83
Edwin Chen 5.1 84 (% style="color:#037691" %)**Humidity Sensor: **
85
86 * Range: 0 ~~ 99.9% RH
87 * Accuracy: ± 2%RH ( 0 ~~ 100%RH)
88 * Resolution: 0.01% RH
89 * Long Term Shift: <0.25 %RH/yr
90
Edwin Chen 1.1 91 (% style="color:#037691" %)**LoRa Spec:**
92
93 * Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
94 * Max +22 dBm constant RF output vs.
95 * RX sensitivity: down to -139 dBm.
96 * Excellent blocking immunity
97
98 (% style="color:#037691" %)**Battery:**
99
100 * Li/SOCI2 un-chargeable battery
101 * Capacity: 8500mAh
102 * Self-Discharge: <1% / Year @ 25°C
103 * Max continuously current: 130mA
104 * Max boost current: 2A, 1 second
105
106 (% style="color:#037691" %)**Power Consumption**
107
108 * Sleep Mode: 5uA @ 3.3v
109 * LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
110
Xiaoling 20.2 111
Edwin Chen 1.1 112 == 1.4 Sleep mode and working mode ==
113
114
115 (% style="color:blue" %)**Deep Sleep Mode: **(%%)Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life.
116
117 (% style="color:blue" %)**Working Mode:** (%%)In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.
118
119
120 == 1.5 Button & LEDs ==
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122
Edwin Chen 6.1 123 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
Edwin Chen 1.1 124
125
Xiaoling 14.13 126 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
Xiaoling 14.11 127 |=(% style="width: 167px;background-color:#D9E2F3;color:#0070C0" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#D9E2F3;color:#0070C0" %)**Function**|=(% style="width: 225px;background-color:#D9E2F3;color:#0070C0" %)**Action**
Edwin Chen 1.1 128 |(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((
129 If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.
130 Meanwhile, BLE module will be active and user can connect via BLE to configure device.
131 )))
132 |(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((
133 (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:#037691" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network.
134 (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
135 Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.
136 )))
Edwin Chen 6.1 137 |(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.
Edwin Chen 1.1 138
Xiaoling 20.2 139
Edwin Chen 1.1 140 == 1.6 BLE connection ==
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142
kai 16.3 143 S31x-LB support BLE remote configure.
Edwin Chen 1.1 144
145
146 BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:
147
148 * Press button to send an uplink
149 * Press button to active device.
150 * Device Power on or reset.
151
152 If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
153
154
155 == 1.7  Hardware Variant ==
156
157
Xiaoling 14.13 158 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
Xiaoling 14.36 159 |=(% style="width: 102px;background-color:#D9E2F3;color:#0070C0" %)Model|=(% style="width: 190px;background-color:#D9E2F3;color:#0070C0" %)Photo|=(% style="width: 218px;background-color:#D9E2F3;color:#0070C0" %)Probe Info
Xiaoling 14.13 160 |(% style="width:102px" %)S31-LB|(% style="width:190px" %) |(% style="width:297px" %)(((
Edwin Chen 6.1 161 1 x SHT31 Probe
Edwin Chen 1.1 162
163 Cable Length : 2 meters
164
165
166 )))
Xiaoling 14.13 167 |(% style="width:102px" %)S31B-LB|(% style="width:190px" %) |(% style="width:297px" %)(((
Edwin Chen 6.1 168 1 x SHT31 Probe
Edwin Chen 1.1 169
Edwin Chen 6.1 170 Installed in device.
Edwin Chen 1.1 171 )))
172
173 (% style="display:none" %)
174
175
176
177 == 1.8 Mechanical ==
178
179
Edwin Chen 6.1 180 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143884058-338.png]]
Edwin Chen 1.1 181
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Edwin Chen 6.1 183 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143899218-599.png]]
Edwin Chen 1.1 184
185
Edwin Chen 6.1 186 [[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675143909447-639.png]]
Edwin Chen 1.1 187
188
Edwin Chen 6.1 189 = 2. Configure S31x-LB to connect to LoRaWAN network =
Edwin Chen 1.1 190
191 == 2.1 How it works ==
192
193
Edwin Chen 6.1 194 The S31x-LB is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and press the button to activate the S31x-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.
Edwin Chen 1.1 195
196
197 == 2.2 ​Quick guide to connect to LoRaWAN server (OTAA) ==
198
199
200 Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.
201
202 The LPS8V2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.
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204
Edwin Chen 6.1 205 (% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from S31x-LB.
Edwin Chen 1.1 206
Edwin Chen 6.1 207 Each S31x-LB is shipped with a sticker with the default device EUI as below:
Edwin Chen 1.1 208
Xiaoling 20.2 209 [[image:image-20230426084152-1.png||height="233" width="502"]]
Edwin Chen 1.1 210
211
212 You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:
213
214
215 (% style="color:blue" %)**Register the device**
216
Xiaoling 14.13 217 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/1654935135620-998.png?rev=1.1||alt="1654935135620-998.png"]]
Edwin Chen 1.1 218
219
220 (% style="color:blue" %)**Add APP EUI and DEV EUI**
221
Xiaoling 14.13 222 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-4.png?width=753&height=551&rev=1.1||alt="image-20220611161308-4.png"]]
Edwin Chen 1.1 223
224
225 (% style="color:blue" %)**Add APP EUI in the application**
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227
Xiaoling 14.13 228 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-5.png?width=742&height=601&rev=1.1||alt="image-20220611161308-5.png"]]
Edwin Chen 1.1 229
230
231 (% style="color:blue" %)**Add APP KEY**
232
Xiaoling 14.13 233 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-6.png?width=744&height=485&rev=1.1||alt="image-20220611161308-6.png"]]
Edwin Chen 1.1 234
235
Edwin Chen 6.1 236 (% style="color:blue" %)**Step 2:**(%%) Activate on S31x-LB
Edwin Chen 1.1 237
238
Edwin Chen 6.1 239 Press the button for 5 seconds to activate the S31x-LB.
240
Edwin Chen 1.1 241 (% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.
242
243 After join success, it will start to upload messages to TTN and you can see the messages in the panel.
244
245
246 == 2.3 ​Uplink Payload ==
247
248 === 2.3.1 Device Status, FPORT~=5 ===
249
250
kai 16.5 251 Users can use the downlink command(**0x26 01**) to ask S31x-LB to send device configure detail, include device configure status. S31x-LB will uplink a payload via FPort=5 to server.
Edwin Chen 1.1 252
253 The Payload format is as below.
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255
Xiaoling 14.15 256 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
257 |(% colspan="6" style="background-color:#d9e2f3; color:#0070c0" %)**Device Status (FPORT=5)**
Edwin Chen 1.1 258 |(% style="width:103px" %)**Size (bytes)**|(% style="width:72px" %)**1**|**2**|(% style="width:91px" %)**1**|(% style="width:86px" %)**1**|(% style="width:44px" %)**2**
259 |(% style="width:103px" %)**Value**|(% style="width:72px" %)Sensor Model|Firmware Version|(% style="width:91px" %)Frequency Band|(% style="width:86px" %)Sub-band|(% style="width:44px" %)BAT
260
261 Example parse in TTNv3
262
Xiaoling 16.2 263 [[image:image-20230421171614-1.png]]
Edwin Chen 1.1 264
265
Edwin Chen 6.1 266 (% style="color:#037691" %)**Sensor Model**(%%): For S31x-LB, this value is 0x0A
Edwin Chen 1.1 267
268 (% style="color:#037691" %)**Firmware Version**(%%): 0x0100, Means: v1.0.0 version
269
270 (% style="color:#037691" %)**Frequency Band**:
271
272 *0x01: EU868
273
274 *0x02: US915
275
276 *0x03: IN865
277
278 *0x04: AU915
279
280 *0x05: KZ865
281
282 *0x06: RU864
283
284 *0x07: AS923
285
286 *0x08: AS923-1
287
288 *0x09: AS923-2
289
290 *0x0a: AS923-3
291
292 *0x0b: CN470
293
294 *0x0c: EU433
295
296 *0x0d: KR920
297
298 *0x0e: MA869
299
300
301 (% style="color:#037691" %)**Sub-Band**:
302
303 AU915 and US915:value 0x00 ~~ 0x08
304
305 CN470: value 0x0B ~~ 0x0C
306
307 Other Bands: Always 0x00
308
309
310 (% style="color:#037691" %)**Battery Info**:
311
312 Check the battery voltage.
313
314 Ex1: 0x0B45 = 2885mV
315
316 Ex2: 0x0B49 = 2889mV
317
318
319 === 2.3.2  Sensor Data. FPORT~=2 ===
320
321
Edwin Chen 7.1 322 Sensor Data is uplink via FPORT=2
Edwin Chen 1.1 323
Xiaoling 14.40 324 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:500px" %)
Xiaoling 14.38 325 |=(% style="width: 90px;background-color:#D9E2F3" %)(((
Edwin Chen 7.1 326 **Size(bytes)**
Xiaoling 14.39 327 )))|=(% style="width: 80px;background-color:#D9E2F3" %)2|=(% style="width: 90px;background-color:#D9E2F3" %)4|=(% style="width:80px;background-color:#D9E2F3" %)1|=(% style="width: 80px;background-color:#D9E2F3" %)**2**|=(% style="width: 80px;background-color:#D9E2F3" %)2
Xiaoling 14.15 328 |(% style="width:99px" %)**Value**|(% style="width:69px" %)(((
Xiaoling 14.17 329 [[Battery>>||anchor="HBattery:"]]
Xiaoling 14.15 330 )))|(% style="width:130px" %)(((
Xiaoling 14.16 331 [[Unix TimeStamp>>||anchor="H2.5.2UnixTimeStamp"]]
Xiaoling 14.15 332 )))|(% style="width:91px" %)(((
Xiaoling 14.17 333 [[Alarm Flag>>||anchor="HAlarmFlag26MOD:"]]
Xiaoling 14.15 334 )))|(% style="width:103px" %)(((
Xiaoling 14.17 335 [[Temperature>>||anchor="HTemperature:"]]
Xiaoling 14.15 336 )))|(% style="width:80px" %)(((
Xiaoling 14.17 337 [[Humidity>>||anchor="HHumidity:"]]
Edwin Chen 7.1 338 )))
Edwin Chen 1.1 339
kai 16.4 340 ==== (% style="color:#4472c4" %)**Battery**(%%) ====
Edwin Chen 1.1 341
342 Sensor Battery Level.
343
344 Ex1: 0x0B45 = 2885mV
345
346 Ex2: 0x0B49 = 2889mV
347
348
349
kai 16.4 350 ==== (% style="color:#4472c4" %)**Temperature**(%%) ====
Edwin Chen 1.1 351
352 **Example**:
353
354 If payload is: 0105H:  (0105 & 8000 == 0), temp = 0105H /10 = 26.1 degree
355
356 If payload is: FF3FH :  (FF3F & 8000 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
357
358 (FF3F & 8000:Judge whether the highest bit is 1, when the highest bit is 1, it is negative)
359
360
kai 16.4 361 ==== (% style="color:#4472c4" %)**Humidity**(%%) ====
Edwin Chen 1.1 362
363
Edwin Chen 7.1 364 Read:0x(0197)=412    Value:  412 / 10=41.2, So 41.2%
Edwin Chen 1.1 365
366
kai 16.4 367 ==== (% style="color:#4472c4" %)**Alarm Flag& MOD**(%%) ====
Edwin Chen 1.1 368
369
370 **Example:**
371
372 If payload & 0x01 = 0x01  **~-~->** This is an Alarm Message
373
374 If payload & 0x01 = 0x00  **~-~->** This is a normal uplink message, no alarm
375
Edwin Chen 7.1 376 If payload >> 2 = 0x00  **~-~->**  means MOD=1, This is a sampling uplink message
Edwin Chen 1.1 377
Edwin Chen 8.1 378 If payload >> 2 = 0x31  **~-~->**  means MOD=31, this message is a reply message for polling, this message contains the alarm settings. see [[this link>>path:#HPolltheAlarmsettings:]] for detail. 
Edwin Chen 1.1 379
380
381 == 2.4 Payload Decoder file ==
382
Xiaoling 14.22 383
Edwin Chen 10.1 384 In TTN, use can add a custom payload so it shows friendly reading
Edwin Chen 1.1 385
Edwin Chen 10.1 386 In the page (% style="color:#037691" %)**Applications ~-~-> Payload Formats ~-~-> Custom ~-~-> decoder**(%%) to add the decoder from:
Edwin Chen 1.1 387
Edwin Chen 10.1 388 [[https:~~/~~/github.com/dragino/dragino-end-node-decoder/tree/main/LSN50v2-S31%26S31B >>https://github.com/dragino/dragino-end-node-decoder/tree/main/LSN50v2-S31%26S31B]]
Edwin Chen 1.1 389
Edwin Chen 10.1 390
Edwin Chen 1.1 391 == 2.5 Datalog Feature ==
392
393
Edwin Chen 11.1 394 Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, S31x-LB will store the reading for future retrieving purposes.
Edwin Chen 1.1 395
396
397 === 2.5.1 Ways to get datalog via LoRaWAN ===
398
399
Xiaoling 14.22 400 Set [[PNACKMD=1>>||anchor="H2.5.4DatalogUplinkpayloadA028FPORT3D329"]], S31x-LB will wait for ACK for every uplink, when there is no LoRaWAN network,S31x-LB will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.
Edwin Chen 1.1 401
Edwin Chen 11.1 402 * a) S31x-LB will do an ACK check for data records sending to make sure every data arrive server.
403 * b) S31x-LB will send data in **CONFIRMED Mode** when PNACKMD=1, but S31x-LB won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if S31x-LB gets a ACK, S31x-LB will consider there is a network connection and resend all NONE-ACK messages.
Edwin Chen 1.1 404
405 Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)
406
407 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220703111700-2.png?width=1119&height=381&rev=1.1||alt="image-20220703111700-2.png" height="381" width="1119"]]
408
409 === 2.5.2 Unix TimeStamp ===
410
411
Edwin Chen 11.1 412 S31x-LB uses Unix TimeStamp format based on
Edwin Chen 1.1 413
414 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220523001219-11.png?width=627&height=97&rev=1.1||alt="image-20220523001219-11.png" height="97" width="627"]]
415
416 User can get this time from link:  [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :
417
418 Below is the converter example
419
420 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220523001219-12.png?width=720&height=298&rev=1.1||alt="image-20220523001219-12.png" height="298" width="720"]]
421
422 So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
423
424
425 === 2.5.3 Set Device Time ===
426
427
Xiaoling 14.24 428 User need to set (% style="color:blue" %)**SYNCMOD=1**(%%) to enable sync time via MAC command.
Edwin Chen 1.1 429
kai 18.1 430 Once S31x-LB Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to S31x-LB. If S31x-LB fails to get the time from the server, S31x-LB will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).
Edwin Chen 1.1 431
Xiaoling 14.24 432 (% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**
Edwin Chen 1.1 433
434
Edwin Chen 11.1 435 === 2.5.4 Datalog Uplink payload (FPORT~=3) ===
Edwin Chen 1.1 436
437
Edwin Chen 11.1 438 The Datalog uplinks will use below payload format.
Edwin Chen 1.1 439
440 **Retrieval data payload:**
441
Xiaoling 14.25 442 (% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
Xiaoling 14.37 443 |=(% style="width: 80px;background-color:#D9E2F3" %)(((
Edwin Chen 1.1 444 **Size(bytes)**
Xiaoling 14.43 445 )))|=(% style="width: 60px; background-color: rgb(217, 226, 243);" %)**2**|=(% style="width: 60px; background-color: rgb(217, 226, 243);" %)**2**|=(% style="width: 120px; background-color: rgb(217, 226, 243);" %)**2**|=(% style="width: 103px; background-color: rgb(217, 226, 243);" %)**1**|=(% style="width: 85px; background-color: rgb(217, 226, 243);" %)**4**
Xiaoling 14.24 446 |(% style="width:103px" %)**Value**|(% style="width:54px" %)(((
Edwin Chen 1.1 447 [[Temp_Black>>||anchor="HTemperatureBlack:"]]
Xiaoling 14.25 448 )))|(% style="width:51px" %)[[Temp_White>>||anchor="HTemperatureWhite:"]]|(% style="width:89px" %)[[Temp_ Red or Temp _White>>||anchor="HTemperatureREDorTemperatureWhite:"]]|(% style="width:103px" %)Poll message flag & Ext|(% style="width:54px" %)[[Unix Time Stamp>>||anchor="H2.5.2UnixTimeStamp"]]
Edwin Chen 1.1 449
450 **Poll message flag & Ext:**
451
452 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20221006192726-1.png?width=754&height=112&rev=1.1||alt="image-20221006192726-1.png" height="112" width="754"]]
453
Xiaoling 14.25 454 **No ACK Message**:  1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for **PNACKMD=1** feature)
Edwin Chen 1.1 455
456 **Poll Message Flag**: 1: This message is a poll message reply.
457
458 * Poll Message Flag is set to 1.
459
460 * Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.
461
462 For example, in US915 band, the max payload for different DR is:
463
464 **a) DR0:** max is 11 bytes so one entry of data
465
466 **b) DR1:** max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)
467
468 **c) DR2:** total payload includes 11 entries of data
469
470 **d) DR3: **total payload includes 22 entries of data.
471
472 If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0   
473
Xiaoling 14.27 474
Edwin Chen 1.1 475 **Example:**
476
kai 16.5 477 If S31x-LB has below data inside Flash:
Edwin Chen 1.1 478
Xiaoling 20.2 479 [[image:1682646494051-944.png]]
Edwin Chen 1.1 480
481 If user sends below downlink command: 3160065F9760066DA705
482
483 Where : Start time: 60065F97 = time 21/1/19 04:27:03
484
485 Stop time: 60066DA7= time 21/1/19 05:27:03
486
Xiaoling 14.26 487
kai 16.5 488 **S31x-LB will uplink this payload.**
Edwin Chen 1.1 489
490 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20Manual/WebHome/image-20220523001219-13.png?width=727&height=421&rev=1.1||alt="image-20220523001219-13.png" height="421" width="727"]]
491
Xiaoling 14.44 492 (((
Edwin Chen 1.1 493 __**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E
Xiaoling 14.44 494 )))
Edwin Chen 1.1 495
Xiaoling 14.44 496 (((
Edwin Chen 1.1 497 Where the first 11 bytes is for the first entry:
Xiaoling 14.44 498 )))
Edwin Chen 1.1 499
Xiaoling 14.44 500 (((
Edwin Chen 1.1 501 7FFF089801464160065F97
Xiaoling 14.44 502 )))
Edwin Chen 1.1 503
Xiaoling 14.44 504 (((
Xiaoling 14.27 505 **Ext sensor data**=0x7FFF/100=327.67
Xiaoling 14.44 506 )))
Edwin Chen 1.1 507
Xiaoling 14.44 508 (((
Xiaoling 14.27 509 **Temp**=0x088E/100=22.00
Xiaoling 14.44 510 )))
Edwin Chen 1.1 511
Xiaoling 14.44 512 (((
Xiaoling 14.27 513 **Hum**=0x014B/10=32.6
Xiaoling 14.44 514 )))
Edwin Chen 1.1 515
Xiaoling 14.44 516 (((
Xiaoling 14.27 517 **poll message flag & Ext**=0x41,means reply data,Ext=1
Xiaoling 14.44 518 )))
Edwin Chen 1.1 519
Xiaoling 14.44 520 (((
Xiaoling 14.27 521 **Unix time** is 0x60066009=1611030423s=21/1/19 04:27:03
Xiaoling 14.44 522 )))
Edwin Chen 1.1 523
524
525 (% 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" %)​
526
527 == 2.6 Temperature Alarm Feature ==
528
529
Edwin Chen 11.1 530 S31x-LB work flow with Alarm feature.
Edwin Chen 1.1 531
532
533 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-D20-D22-D23%20LoRaWAN%20Temperature%20Sensor%20User%20Manual/WebHome/image-20220623090437-1.png?rev=1.1||alt="image-20220623090437-1.png"]]
534
535
536 == 2.7 Frequency Plans ==
537
538
Edwin Chen 11.1 539 The S31x-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.
Edwin Chen 1.1 540
541 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]
542
543
Edwin Chen 11.1 544 = 3. Configure S31x-LB =
Edwin Chen 1.1 545
kai 16.4 546 == 3.1 Configure Methods ==
Edwin Chen 1.1 547
548
Edwin Chen 11.1 549 S31x-LB supports below configure method:
Edwin Chen 1.1 550
551 * AT Command via Bluetooth Connection (**Recommended**): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
Edwin Chen 11.1 552 * AT Command via UART Connection : See [[UART Connection>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
Edwin Chen 1.1 553 * LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
554
Xiaoling 20.2 555
Edwin Chen 1.1 556 == 3.2 General Commands ==
557
558
559 These commands are to configure:
560
561 * General system settings like: uplink interval.
562 * LoRaWAN protocol & radio related command.
563
564 They are same for all Dragino Devices which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:
565
566 [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]
567
568
Edwin Chen 11.1 569 == 3.3 Commands special design for S31x-LB ==
Edwin Chen 1.1 570
571
Edwin Chen 11.1 572 These commands only valid for S31x-LB, as below:
Edwin Chen 1.1 573
574
575 === 3.3.1 Set Transmit Interval Time ===
576
577
578 Feature: Change LoRaWAN End Node Transmit Interval.
579
580 (% style="color:blue" %)**AT Command: AT+TDC**
581
Xiaoling 14.34 582 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
Xiaoling 14.27 583 |=(% style="width: 156px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 137px;background-color:#D9E2F3" %)**Function**|=(% style="background-color:#D9E2F3" %)**Response**
Edwin Chen 1.1 584 |(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((
585 30000
586 OK
587 the interval is 30000ms = 30s
588 )))
589 |(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((
590 OK
591 Set transmit interval to 60000ms = 60 seconds
592 )))
593
594 (% style="color:blue" %)**Downlink Command: 0x01**
595
596 Format: Command Code (0x01) followed by 3 bytes time value.
597
598 If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
599
600 * Example 1: Downlink Payload: 0100001E  ~/~/  Set Transmit Interval (TDC) = 30 seconds
601 * Example 2: Downlink Payload: 0100003C  ~/~/  Set Transmit Interval (TDC) = 60 seconds
602
603 === 3.3.2 Get Device Status ===
604
605
606 Send a LoRaWAN downlink to ask device send Alarm settings.
607
Xiaoling 14.31 608 (% style="color:blue" %)**Downlink Payload:  **(%%)0x26 01
Edwin Chen 1.1 609
610 Sensor will upload Device Status via FPORT=5. See payload section for detail.
611
612
kai 16.4 613 === 3.3.3 Set Temperature Alarm Threshold ===
Edwin Chen 1.1 614
Xiaoling 14.34 615 * (% style="color:blue" %)**AT Command:**
Edwin Chen 1.1 616
Xiaoling 14.34 617 (% style="color:#037691" %)**AT+SHTEMP=min,max**
Edwin Chen 1.1 618
Edwin Chen 11.1 619 * When min=0, and max≠0, Alarm higher than max
620 * When min≠0, and max=0, Alarm lower than min
621 * When min≠0 and max≠0, Alarm higher than max or lower than min
Edwin Chen 1.1 622
Edwin Chen 11.1 623 Example:
Edwin Chen 1.1 624
Edwin Chen 11.1 625 AT+SHTEMP=0,30   ~/~/ Alarm when temperature higher than 30.
Edwin Chen 1.1 626
Xiaoling 14.34 627 * (% style="color:blue" %)**Downlink Payload:**
Edwin Chen 1.1 628
Xiaoling 14.45 629 (% style="color:#037691" %)**0x(0C 01 00 1E)**  (%%) ~/~/ Set AT+SHTEMP=0,30
Edwin Chen 1.1 630
Xiaoling 14.34 631 (% style="color:red" %)**(note: 3^^rd^^ byte= 0x00 for low limit(not set), 4^^th^^ byte = 0x1E for high limit: 30)**
Edwin Chen 1.1 632
633
kai 16.4 634 === 3.3.4 Set Humidity Alarm Threshold ===
Edwin Chen 1.1 635
Xiaoling 14.34 636 * (% style="color:blue" %)**AT Command:**
Edwin Chen 1.1 637
Xiaoling 14.34 638 (% style="color:#037691" %)**AT+SHHUM=min,max**
Edwin Chen 1.1 639
Edwin Chen 11.1 640 * When min=0, and max≠0, Alarm higher than max
641 * When min≠0, and max=0, Alarm lower than min
642 * When min≠0 and max≠0, Alarm higher than max or lower than min
Edwin Chen 1.1 643
Edwin Chen 11.1 644 Example:
Edwin Chen 1.1 645
Xiaoling 14.45 646 AT+SHHUM=70,0  ~/~/ Alarm when humidity lower than 70%.
Edwin Chen 1.1 647
Xiaoling 14.34 648 * (% style="color:blue" %)**Downlink Payload:**
Edwin Chen 1.1 649
Xiaoling 14.45 650 (% style="color:#037691" %)**0x(0C 02 46 00)**(%%)  ~/~/ Set AT+SHTHUM=70,0
Edwin Chen 1.1 651
Xiaoling 14.34 652 (% style="color:red" %)**(note: 3^^rd^^ byte= 0x46 for low limit (70%), 4^^th^^ byte = 0x00 for high limit (not set))**
Edwin Chen 1.1 653
654
kai 16.4 655 === 3.3.5 Set Alarm Interval ===
Edwin Chen 1.1 656
657 The shortest time of two Alarm packet. (unit: min)
658
Xiaoling 14.34 659 * (% style="color:blue" %)**AT Command:**
Edwin Chen 1.1 660
Xiaoling 14.34 661 (% style="color:#037691" %)**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.
Edwin Chen 1.1 662
Xiaoling 14.34 663 * (% style="color:blue" %)**Downlink Payload:**
Edwin Chen 1.1 664
Xiaoling 14.34 665 (% style="color:#037691" %)**0x(0D 00 1E)**(%%)     **~-~--> ** Set AT+ATDC=0x 00 1E = 30 minutes
Edwin Chen 1.1 666
667
kai 16.4 668 === 3.3.6 Get Alarm settings ===
Edwin Chen 1.1 669
670
671 Send a LoRaWAN downlink to ask device send Alarm settings.
672
673 * (% style="color:#037691" %)**Downlink Payload:  **(%%)0x0E 01
674
675 **Example:**
676
677 [[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-D20-D22-D23%20LoRaWAN%20Temperature%20Sensor%20User%20Manual/WebHome/1655948182791-225.png?rev=1.1||alt="1655948182791-225.png"]]
678
679
680 **Explain:**
681
682 * Alarm & MOD bit is 0x7C, 0x7C >> 2 = 0x31: Means this message is the Alarm settings message.
683
Xiaoling 20.2 684
kai 16.4 685 === 3.3.7 Set Interrupt Mode ===
Xiaoling 14.45 686
Edwin Chen 11.1 687
Edwin Chen 1.1 688 Feature, Set Interrupt mode for GPIO_EXIT.
689
690 (% style="color:blue" %)**AT Command: AT+INTMOD**
691
Xiaoling 14.34 692 (% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
Xiaoling 14.32 693 |=(% style="width: 154px;background-color:#D9E2F3" %)**Command Example**|=(% style="width: 196px;background-color:#D9E2F3" %)**Function**|=(% style="width: 157px;background-color:#D9E2F3" %)**Response**
Edwin Chen 1.1 694 |(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((
695 0
696 OK
697 the mode is 0 =Disable Interrupt
698 )))
699 |(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((
700 Set Transmit Interval
701 0. (Disable Interrupt),
702 ~1. (Trigger by rising and falling edge)
703 2. (Trigger by falling edge)
704 3. (Trigger by rising edge)
705 )))|(% style="width:157px" %)OK
706
707 (% style="color:blue" %)**Downlink Command: 0x06**
708
709 Format: Command Code (0x06) followed by 3 bytes.
710
711 This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
712
713 * Example 1: Downlink Payload: 06000000  ~/~/  Turn off interrupt mode
714 * Example 2: Downlink Payload: 06000003  ~/~/  Set the interrupt mode to rising edge trigger
715
Xiaoling 20.2 716
kai 16.4 717 = 4. Battery & Power Consumption =
Xiaoling 14.45 718
Edwin Chen 1.1 719
Edwin Chen 11.1 720 S31x-LB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
Edwin Chen 1.1 721
722 [[**Battery Info & Power Consumption Analyze**>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
723
724
kai 16.4 725 = 5. OTA Firmware update =
Edwin Chen 1.1 726
727
Edwin Chen 13.1 728 (% class="wikigeneratedid" %)
729 User can change firmware S31x-LB to:
Edwin Chen 1.1 730
Edwin Chen 13.1 731 * Change Frequency band/ region.
732 * Update with new features.
733 * Fix bugs.
Edwin Chen 1.1 734
Edwin Chen 13.1 735 Firmware and changelog can be downloaded from : **[[Firmware download link>>https://www.dropbox.com/sh/kwqv57tp6pejias/AAAopYMATh1GM6fZ-VRCLrpDa?dl=0]]**
Edwin Chen 1.1 736
737
Edwin Chen 13.1 738 Methods to Update Firmware:
Edwin Chen 1.1 739
Edwin Chen 13.1 740 * (Recommanded way) OTA firmware update via wireless: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]
741 * Update through UART TTL interface. **[[Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.
Edwin Chen 1.1 742
Xiaoling 20.2 743
Edwin Chen 13.1 744 = 6. FAQ =
Edwin Chen 1.1 745
746
747
748 = 7. Order Info =
749
750
Edwin Chen 12.1 751 Part Number: (% style="color:blue" %)**S31-LB-XX  / S31B-LB-XX**
Edwin Chen 1.1 752
753 (% style="color:red" %)**XX**(%%): The default frequency band
754
755 * (% style="color:red" %)**AS923**(%%): LoRaWAN AS923 band
756
757 * (% style="color:red" %)**AU915**(%%): LoRaWAN AU915 band
758
759 * (% style="color:red" %)**EU433**(%%): LoRaWAN EU433 band
760
761 * (% style="color:red" %)**EU868**(%%): LoRaWAN EU868 band
762
763 * (% style="color:red" %)**KR920**(%%): LoRaWAN KR920 band
764
765 * (% style="color:red" %)**US915**(%%): LoRaWAN US915 band
766
767 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band
768
769 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band
770
Xiaoling 20.2 771
Edwin Chen 1.1 772 = 8. ​Packing Info =
773
774
775 (% style="color:#037691" %)**Package Includes**:
776
Edwin Chen 9.1 777 * S31x-LB LoRaWAN Temperature & Humidity Sensor
Edwin Chen 1.1 778
779 (% style="color:#037691" %)**Dimension and weight**:
780
781 * Device Size: cm
782
783 * Device Weight: g
784
785 * Package Size / pcs : cm
786
787 * Weight / pcs : g
788
Xiaoling 20.2 789
Edwin Chen 1.1 790 = 9. Support =
791
792
793 * 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.
794
795 * 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]]