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Xiaoling 2.2 1 (% style="text-align:center" %)
Xiaoling 33.2 2 [[image:1654679359875-169.png]]
Xiaoling 1.1 3
4
Xiaoling 17.3 5 **Contents:**
Xiaoling 1.1 6
Xiaoling 17.3 7 {{toc/}}
Xiaoling 1.1 8
9
10
Xiaoling 17.3 11
12
Xiaoling 2.2 13 = 1. Introduction =
Xiaoling 1.1 14
Xiaoling 33.2 15 == 1.1 What is LDS02 LoRaWAN Door Sensor ==
Xiaoling 1.1 16
17
Xiaoling 3.2 18 (((
Xiaoling 33.5 19 The Dragino LDS02 is a (% style="color:#037691" %)**LoRaWAN Door Sensor**(%%). It detects door open/close status and uplink to IoT server via LoRaWAN network. user can see the door status, open time, open counts in the IoT Server.
Xiaoling 1.1 20
Xiaoling 33.5 21 LDS02 is powered by (% style="color:#037691" %)**2 x AAA batteries**(%%) and target for long time use, these two batteries can provide about 16,000 ~~ 70,000 uplink packets. After battery running out, user can easily open the enclosure and replace with 2 common AAA batteries.
Xiaoling 1.2 22
Xiaoling 33.5 23 The LDS02 will send periodically data every day as well as for each door open/close action. It also (% style="color:#037691" %)**counts the door open times**(%%) and (% style="color:#037691" %)**calculate last door open duration**(%%). User can also disable the uplink for each open/close event, instead, device can count each open event and uplink periodically.
Xiaoling 1.2 24
Xiaoling 33.5 25 LDS02 has the (% style="color:#037691" %)**open alarm feature**(%%), user can set this feature so device will send Alarm if the door has been open for a certain time.
Xiaoling 33.2 26
Xiaoling 33.5 27 Each LDS02 is (% style="color:#037691" %)**pre-load with a set of unique keys**(%%) for LoRaWAN registration, register these keys to LoRaWAN server and it will auto connect after power on.
Xiaoling 3.2 28 )))
Xiaoling 1.2 29
Xiaoling 34.2 30 [[image:image-20220608171947-2.png]]
Xiaoling 1.2 31
32
33
Xiaoling 3.3 34 == 1.2 Features ==
Xiaoling 1.2 35
36 * LoRaWAN Class A v1.0.3
37 * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
38 * SX1262 LoRa Core
39 * Water Leak detect
40 * 2 x AAA LR03 Batteries
41 * AT Commands to change parameters
42 * Uplink on periodically and open/close action
43 * Remote configure parameters via LoRa Downlink
44 * Firmware upgradable via program port
45
Xiaoling 44.8 46
47
Xiaoling 3.4 48 == 1.3 Applications ==
49
Xiaoling 1.2 50 * Smart Buildings & Home Automation
51 * Logistics and Supply Chain Management
52 * Smart Metering
53 * Smart Agriculture
54 * Smart Cities
55 * Smart Factory
56
Xiaoling 44.9 57
58
Xiaoling 5.2 59 == 1.4 Dimension ==
Xiaoling 1.2 60
Xiaoling 34.3 61 Unit: mm
Xiaoling 1.2 62
Xiaoling 37.2 63 [[image:1654680563545-120.png]]
Xiaoling 1.2 64
Xiaoling 5.2 65
Xiaoling 37.2 66 [[image:1654680510816-654.png]]
Xiaoling 5.2 67
Xiaoling 37.2 68
Xiaoling 5.2 69 == 1.5 Firmware Change log ==
70
Xiaoling 26.8 71 (((
Xiaoling 37.2 72 (((
73 LDS02 use the same firmware as LDS01.
Xiaoling 26.8 74 )))
Xiaoling 1.2 75
Xiaoling 26.8 76 (((
Xiaoling 37.2 77 [[LDS02 Image files – Download link>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/Firmware/]]
Xiaoling 26.8 78 )))
Xiaoling 37.2 79 )))
Xiaoling 1.2 80
81
Xiaoling 37.3 82 = 2. Power ON LDS02 =
Xiaoling 1.2 83
Xiaoling 37.3 84 When receive the LDS02, please open the enclosure and add 2 x AAA batteries to power it. The [[LED>>||anchor="H4.7LEDs"]] will blink when device is powered.
Xiaoling 1.2 85
86
Xiaoling 37.4 87 = 3. How to install LDS02 =
Xiaoling 1.2 88
Xiaoling 7.4 89 (((
Xiaoling 37.4 90 (((
91 When install the LDS02 on wall. Please make sure install as below so the marks will close to each other when close the door.
Xiaoling 7.4 92 )))
Xiaoling 1.2 93
Xiaoling 37.4 94 (((
95 Open/Close threshold range: ~~ 25mm
96 )))
97 )))
Xiaoling 1.2 98
Xiaoling 38.2 99 [[image:1654680716522-793.png]]
Xiaoling 1.2 100
101
Xiaoling 37.4 102
Xiaoling 7.2 103 = 4. Operation Mode =
Xiaoling 1.2 104
Xiaoling 7.2 105 == 4.1 How it works? ==
Xiaoling 1.2 106
Xiaoling 26.5 107 (((
Xiaoling 38.3 108 The LDS02 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join network. To connect a local LoRaWAN network, user just need to input the OTAA keys in the network server and [[power on>>||anchor="H2.PowerONLWL02"]] the LDS02. It will auto join the network via OTAA.
Xiaoling 26.5 109 )))
Xiaoling 1.2 110
Xiaoling 26.5 111 (((
Xiaoling 7.3 112 In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>||anchor="H6.UseATCommand"]] to set the keys in the devices.
Xiaoling 26.5 113 )))
Xiaoling 1.2 114
115
Xiaoling 7.3 116 == 4.2 Example to join LoRaWAN network ==
Xiaoling 7.2 117
Xiaoling 1.6 118 Here shows an example for how to join the [[TTN V3 Network>>url:https://eu1.cloud.thethings.network/]]. Below is the network structure, we use [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway here. 
Xiaoling 1.2 119
Xiaoling 39.2 120 [[image:1654680810108-149.png]]
Xiaoling 1.2 121
122
Xiaoling 9.6 123 (((
Xiaoling 39.4 124 The LDS02 in installed on the door edge to detect the open / close event. And send the status to LoRaWAN server. The LDS02 will uplink two type of messages to the server.
Xiaoling 9.6 125 )))
Xiaoling 1.2 126
Xiaoling 9.6 127 * (((
128 A keep-alive message which send once per day.
129 )))
130 * (((
Xiaoling 39.3 131 A door event message when there is a door open/close. ([[Alarm event can be disabled>>||anchor="H7.3CanIdisableuplinkforeacheventtosavebatterylife3F"]])
Xiaoling 9.6 132 )))
Xiaoling 1.2 133
Xiaoling 9.6 134 (((
Xiaoling 29.2 135
136
Xiaoling 1.2 137 The LG308 is already set to connect to [[TTN V3 network >>url:https://eu1.cloud.thethings.network/]]. What we need to now is only configure the TTN V3:
Xiaoling 9.6 138 )))
Xiaoling 1.2 139
Xiaoling 9.6 140 (((
Xiaoling 39.4 141 (% style="color:blue" %)**Step 1**(%%): Create a device in TTN V3 with the OTAA keys from LDS02.
Xiaoling 9.6 142 )))
Xiaoling 1.2 143
Xiaoling 9.6 144 (((
Xiaoling 39.4 145 Each LDS02 is shipped with a sticker with unique device EUI:
Xiaoling 9.6 146 )))
Xiaoling 1.2 147
Xiaoling 9.2 148 [[image:1654671040430-368.png]]
Xiaoling 1.2 149
150
151 User can enter this key in their LoRaWAN Server portal. Below is TTN V3 screen shot:
152
Xiaoling 14.3 153 **Add APP EUI in the application**
Xiaoling 1.2 154
Xiaoling 11.2 155 [[image:1654671794691-956.png]]
Xiaoling 1.2 156
157
Xiaoling 11.2 158 [[image:1654671809850-574.png]]
Xiaoling 1.2 159
Xiaoling 12.2 160 [[image:1654671820156-640.png]]
Xiaoling 1.2 161
162
Xiaoling 40.2 163 [[image:1654681258096-500.png]]
Xiaoling 1.2 164
165
Xiaoling 14.2 166 **Add APP KEY and DEV EUI**
Xiaoling 1.2 167
Xiaoling 40.2 168 [[image:1654671889112-678.png]]
Xiaoling 1.2 169
Xiaoling 40.2 170
Xiaoling 43.2 171 (% style="color:blue" %)**Step 2**(%%): **[[Power on>>||anchor="H2.PowerONLWL02"]]** LDS02 and it will auto join to the TTN V3 network. After join success, it will start to upload message to TTN V3 and user can see in the panel.
Xiaoling 1.2 172
173
Xiaoling 43.2 174 [[image:1654681390551-993.png]]
Xiaoling 1.2 175
Xiaoling 40.2 176
177
Xiaoling 14.5 178 == 4.3 Uplink Payload ==
179
Xiaoling 26.11 180
Xiaoling 43.2 181 Uplink Payload total 10 bytes.
Xiaoling 1.2 182
Xiaoling 43.6 183 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:480px" %)
Xiaoling 43.4 184 |=(% style="width: 80px;" %)**Size(bytes)**|=(% style="width: 80px;" %)**2**|=(% style="width: 80px;" %)**1**|=(% style="width: 80px;" %)**3**|=(% style="width: 80px;" %)**3**|=(% style="width: 80px;" %)**1**
Xiaoling 43.2 185 |value|Status&BAT|(((
186 MOD
Xiaoling 1.2 187
Xiaoling 43.2 188 Always:0x01
189 )))|Total open door events|(((
190 Last door open
Xiaoling 26.10 191
Xiaoling 43.2 192 duration (unit: min)
Xiaoling 43.4 193 )))|[[Alarm>>||anchor="H4.6AlarmBaseonTimeout"]]
Xiaoling 43.2 194
Xiaoling 16.2 195 **Example:**
Xiaoling 1.2 196
Xiaoling 43.2 197 [[image:1654681706301-731.png]]
Xiaoling 1.2 198
Xiaoling 43.2 199 [[image:1654681714641-440.png]]
Xiaoling 1.2 200
Xiaoling 43.2 201
Xiaoling 16.3 202 (((
Xiaoling 43.3 203 Example Payload Decoder in TTN V3: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS02/Payload/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/Payload/]]
Xiaoling 16.3 204 )))
Xiaoling 1.2 205
206
Xiaoling 16.4 207 == 4.4 Downlink Payload ==
Xiaoling 1.2 208
Xiaoling 26.9 209
Xiaoling 16.9 210 (% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:410px" %)
Xiaoling 16.7 211 |=(% style="width: 180px;" %)**Downlink Control Type**|=(% style="width: 80px;" %)**Type Code**|=(% style="width: 150px;" %)**Downlink payload size(bytes)**
212 |(% style="width:180px" %)TDC (Transmit Time Interval—Keep Alive Interval)|(% style="width:80px" %)0x01|(% style="width:150px" %)4
213 |(% style="width:180px" %)RESET|(% style="width:80px" %)0x04|(% style="width:224px" %)2
Xiaoling 17.4 214 |(% style="width:180px" %)[[Set confirmed mode>>||anchor="HTypeCode0x05"]]|(% style="width:80px" %)0x05|(% style="width:150px" %)2
215 |(% style="width:180px" %)[[Clear Counting>>||anchor="HTypeCode0xA6"]]|(% style="width:80px" %)0xA6|(% style="width:150px" %)2
216 |(% style="width:180px" %)[[Enable/Disable Alarm>>||anchor="HTypeCode0xA7"]]|(% style="width:80px" %)0xA7|(% style="width:150px" %)2
217 |(% style="width:180px" %)[[Control ADR/DR>>||anchor="HTypeCode0xA8"]]|(% style="width:80px" %)0xA8|(% style="width:150px" %)3
218 |(% style="width:180px" %)[[Set Alarm Timeout>>||anchor="HTypeCode0xA9"]]|(% style="width:80px" %)0xA9|(% style="width:150px" %)4
Xiaoling 1.2 219
220 Example Downlink payload setting in TTN V3:
221
Xiaoling 17.2 222 [[image:1654673412319-976.png]]
Xiaoling 1.2 223
224
Xiaoling 17.3 225 === (% style="color:#037691" %)**Type Code 0x01**(%%) ===
Xiaoling 1.2 226
Xiaoling 43.7 227 If the payload=0100003C, means to control the LDS02’s Keep Alive interval to 0x00003C=60(S)
Xiaoling 1.2 228
229
Xiaoling 17.3 230 === (% style="color:#037691" %)**Type Code 0x04**(%%) ===
Xiaoling 1.2 231
Xiaoling 43.7 232 If payload = 0x04FF, it will reset the LDS02.
Xiaoling 1.2 233
234
Xiaoling 17.3 235 === (% style="color:#037691" %)**Type Code 0x05**(%%) ===
Xiaoling 1.2 236
237 0x05 00: Set uplink to LoRaWAN unconfirmed mode
238
239 0x05 01: Set uplink to LoRaWAN confirmed mode
240
241
Xiaoling 17.3 242 === (% style="color:#037691" %)**Type Code 0xA6**(%%) ===
Xiaoling 1.2 243
244 Example: 0xA601: Clear Counting
Xiaoling 43.7 245 For LDS02: reset both count number and time.
Xiaoling 1.2 246
247
Xiaoling 17.3 248 === (% style="color:#037691" %)**Type Code 0xA7**(%%) ===
Xiaoling 1.2 249
250 0xA7 01 : Equal to AT+DISALARM=1
251
252 0xA7 00 : Equal to AT+DISALARM=0
253
254
Xiaoling 17.3 255 === (% style="color:#037691" %)**Type Code 0xA8**(%%) ===
Xiaoling 1.2 256
257 Format: 0xA8 aa bb
258
259 aa: 1: Enable ADR; 0: Disable ADR (Same as AT+CADR command)
260
261 bb: set DR (Same as AT+CDATARATE ,only valid after ADR=0)
262
263 Example: 0x A8 00 02 : Set ADR=0 and DR=1
264
265
Xiaoling 17.3 266 === (% style="color:#037691" %)**Type Code 0xA9**(%%) ===
Xiaoling 1.2 267
Xiaoling 17.7 268 See [[Alarm Base Timeout>>||anchor="H4.6AlarmBaseonTimeout"]] for detail.
Xiaoling 1.2 269
270
Xiaoling 17.8 271 == 4.5 Integrate with Datacake ==
Xiaoling 1.2 272
Xiaoling 21.5 273 (((
Xiaoling 1.2 274 Datacake provides a human friendly interface to show the sensor data, once we have data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
Xiaoling 21.5 275 )))
Xiaoling 1.2 276
277
Xiaoling 19.2 278 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
Xiaoling 1.2 279
Xiaoling 19.2 280 (% style="color:blue" %)**Step 2**(%%): To configure the Application to forward data to Datacake you will need to add integration. To add the Datacake integration, perform the following steps:
Xiaoling 1.2 281
282
Xiaoling 19.2 283 [[image:1654674520913-519.png]]
Xiaoling 1.2 284
285
Xiaoling 19.2 286 [[image:1654674530910-914.png]]
Xiaoling 1.2 287
288
Xiaoling 21.2 289 [[image:1654674543078-401.png]]
Xiaoling 1.2 290
291
Xiaoling 21.3 292 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Datacake.
Xiaoling 1.2 293
Xiaoling 43.8 294 (% style="color:blue" %)**Step 4**(%%): Search LDS02 and add DevEUI.
Xiaoling 1.2 295
Xiaoling 21.2 296 [[image:1654674556510-911.png]]
Xiaoling 1.2 297
298
Xiaoling 17.8 299 == 4.6 Alarm Base on Timeout ==
Xiaoling 1.2 300
Xiaoling 23.4 301 (((
Xiaoling 43.8 302 (((
303 LDS02 can monitor the timeout for a status change, this feature can be used to monitor some event such as open fridge too long etc.
Xiaoling 23.4 304 )))
Xiaoling 1.2 305
Xiaoling 23.4 306 (((
Xiaoling 1.2 307 User configure this feature by using:
Xiaoling 23.4 308 )))
Xiaoling 43.8 309 )))
Xiaoling 1.2 310
Xiaoling 23.4 311 (((
Xiaoling 43.8 312 (((
Xiaoling 23.4 313
314 )))
Xiaoling 43.8 315 )))
Xiaoling 1.2 316
Xiaoling 23.4 317 (((
Xiaoling 43.8 318 (((
Xiaoling 21.5 319 (% style="color:blue" %)**AT Command**(%%) to configure:
Xiaoling 23.4 320 )))
Xiaoling 43.8 321 )))
Xiaoling 1.2 322
Xiaoling 23.4 323 * (((
Xiaoling 43.8 324 (((
Xiaoling 23.4 325 **AT+TTRIG=1,30 ** **~-~->** When status change from close to open, and device keep in open
326 )))
Xiaoling 43.8 327 )))
Xiaoling 1.2 328
Xiaoling 23.4 329 (((
Xiaoling 43.8 330 (((
Xiaoling 1.2 331 status for more than 30 seconds. LWL02 will send an uplink packet, the Alarm bit (the lowest bit of 10^^th^^ byte of payload) on this uplink packet is set to 1.
Xiaoling 23.4 332 )))
Xiaoling 43.8 333 )))
Xiaoling 1.2 334
Xiaoling 23.4 335 * (((
Xiaoling 43.8 336 (((
Xiaoling 23.4 337 **AT+TTIG=0,0**  **~-~->**  Default Value, disable timeout Alarm.
338 )))
Xiaoling 43.8 339 )))
Xiaoling 1.2 340
Xiaoling 23.4 341 (((
Xiaoling 43.8 342 (((
Xiaoling 21.5 343 (% style="color:blue" %)**Downlink Command**(%%) to configure:
Xiaoling 23.4 344 )))
Xiaoling 43.8 345 )))
Xiaoling 1.2 346
Xiaoling 23.4 347 (((
Xiaoling 43.8 348 (((
Xiaoling 21.6 349 **Command: 0xA9 aa bb cc**
Xiaoling 23.4 350 )))
Xiaoling 43.8 351 )))
Xiaoling 1.2 352
Xiaoling 23.4 353 (((
Xiaoling 43.8 354 (((
Xiaoling 1.2 355 A9: Command Type Code
Xiaoling 23.4 356 )))
Xiaoling 43.8 357 )))
Xiaoling 1.2 358
Xiaoling 23.4 359 (((
Xiaoling 43.8 360 (((
Xiaoling 1.2 361 aa: status to be monitor
Xiaoling 23.4 362 )))
Xiaoling 43.8 363 )))
Xiaoling 1.2 364
Xiaoling 23.4 365 (((
Xiaoling 43.8 366 (((
Xiaoling 1.2 367 bb cc: timeout.
Xiaoling 23.4 368 )))
Xiaoling 43.8 369 )))
Xiaoling 1.2 370
Xiaoling 23.4 371 (((
Xiaoling 43.8 372 (((
Xiaoling 23.4 373
374 )))
Xiaoling 43.8 375 )))
Xiaoling 1.2 376
Xiaoling 23.4 377 (((
Xiaoling 43.8 378 (((
Xiaoling 1.2 379 If user send 0xA9 01 00 1E: equal to AT+TTRIG=1,30
Xiaoling 23.4 380 )))
Xiaoling 43.8 381 )))
Xiaoling 1.2 382
Xiaoling 23.4 383 (((
Xiaoling 43.8 384 (((
Xiaoling 1.2 385 Or
Xiaoling 23.4 386 )))
Xiaoling 43.8 387 )))
Xiaoling 1.2 388
Xiaoling 23.4 389 (((
Xiaoling 43.8 390 (((
Xiaoling 1.2 391 0xA9 00 00 00: Equal to AT+TTRIG=0,0. Disable timeout Alarm.
Xiaoling 23.4 392 )))
Xiaoling 43.8 393 )))
Xiaoling 1.2 394
395
396
Xiaoling 17.8 397 == 4.7 LEDs ==
Xiaoling 1.2 398
Xiaoling 25.9 399
Xiaoling 21.7 400 (% border="1" cellspacing="10" style="background-color:#ffffcc; width:463px" %)
401 |=(% style="width: 184px;" %)**Action**|=(% style="width: 275px;" %)**LED behavior**
402 |(% style="width:184px" %)Power On|(% style="width:275px" %)(% style="color:green" %)**GREEN on 1s, **(% style="color:red" %)**RED on 1s,**(%%)** (% style="color:blue" %)BLUE on 1s(%%)**
403 |(% style="width:184px" %)Joined successful|(% style="width:275px" %)(% style="color:green" %)**GRENN LED **(%%)on 5s
404 |(% style="width:184px" %)Send an uplink message|(% style="width:275px" %)(% style="color:green" %)**GREEN LED**(%%) blinks once
405 |(% style="width:184px" %)Got a downlink message|(% style="width:275px" %)(% style="color:blue" %)**BLUE LED**(%%) blinks once
Xiaoling 1.2 406
Xiaoling 43.9 407
Xiaoling 21.8 408 = 5. Battery & How to replace =
409
410 == 5.1 Battery Type and replace ==
411
Xiaoling 22.3 412 (((
Xiaoling 43.10 413 LDS02 is equipped with 2 x AAA LR03 batteries. If the batteries running low (shows 2.1v in the platform). User can buy generic AAA battery and replace it.
Xiaoling 1.2 414
Xiaoling 43.10 415 **Note:**
416
417 1. The LDS02 doesn’t have any screw, use can use nail to open it by the middle.
418 1. Make sure the direction is correct when install the AAA batteries.
Xiaoling 22.3 419 )))
Xiaoling 1.2 420
Xiaoling 22.3 421 (((
Xiaoling 22.2 422 (% style="color:red" %)**Important Notice: Make sure use new AAA LR03 battery and the battery doesn’t have broken surface.**
Xiaoling 22.3 423 )))
Xiaoling 1.2 424
Xiaoling 22.3 425 (((
426
427 )))
Xiaoling 1.2 428
Xiaoling 22.3 429 (((
Xiaoling 1.2 430 Example of AAA LR03 batter:
Xiaoling 22.3 431 )))
Xiaoling 1.2 432
Xiaoling 22.2 433 [[image:1654675278044-307.png]]
Xiaoling 1.2 434
435
Xiaoling 22.4 436 == 5.2 Power Consumption Analyze ==
437
Xiaoling 26.6 438 (((
Xiaoling 1.2 439 Dragino battery powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimate battery life:
Xiaoling 26.6 440 )))
Xiaoling 1.2 441
Xiaoling 26.6 442 (((
Xiaoling 1.2 443 [[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
Xiaoling 26.6 444 )))
Xiaoling 1.2 445
446
Xiaoling 22.4 447 = 6. Use AT Command =
Xiaoling 1.2 448
Xiaoling 22.4 449 == 6.1 Access AT Command ==
450
Xiaoling 1.2 451 LWL02 supports AT Command set. User can use a USB to TTL adapter to configure LWL02 via use AT command, as below.
452
Xiaoling 44.2 453 [[image:image-20220609085453-1.png]]
Xiaoling 1.2 454
455
Xiaoling 44.3 456 (% style="background-color:yellow" %)**USB to TTL <- -> LDS02**
Xiaoling 1.2 457
Xiaoling 44.3 458 (% style="background-color:yellow" %)**RX <- -> TXD**
Xiaoling 1.2 459
Xiaoling 44.3 460 (% style="background-color:yellow" %)**TX <- -> RXD**
Xiaoling 23.7 461
462 (% style="background-color:yellow" %)**GND <- -> GND**
463
Xiaoling 24.3 464
465 (((
Xiaoling 44.3 466 In PC, User needs to set (% style="color:#037691" %)**serial tool**(%%)(such as [[putty>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**115200**(%%) to access to access serial console of LDS02. Below is the output for reference:
Xiaoling 24.3 467 )))
Xiaoling 1.2 468
Xiaoling 24.3 469 (((
Xiaoling 24.2 470 The AT Access password is (% style="color:red" %)**123456**.
Xiaoling 24.3 471 )))
Xiaoling 1.2 472
Xiaoling 24.2 473 [[image:1654675618022-630.png]]
Xiaoling 1.2 474
Xiaoling 44.3 475
Xiaoling 26.7 476 (((
Xiaoling 24.4 477 Each AT Command need to (% style="color:red" %)**add an ENTER**(%%) at the end before send.
Xiaoling 26.7 478 )))
Xiaoling 1.2 479
Xiaoling 26.7 480 (((
Xiaoling 24.4 481 When entering the first command, the (% style="color:red" %)**RED LED**(%%) will on and user can now input AT Commands. After input all needed AT Commands, please input AT+CLPM=1 to set the device to work in Low Power mode and (% style="color:red" %)**RED LED**(%%) will be off.
Xiaoling 26.7 482 )))
Xiaoling 1.2 483
Xiaoling 26.7 484 (((
Xiaoling 1.2 485 More detail AT Command manual can be found at [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]]
Xiaoling 26.7 486 )))
Xiaoling 1.2 487
488
Xiaoling 1.5 489 = 7. FAQ =
490
491 == 7.1 How to upgrade the image? ==
492
Xiaoling 44.4 493 User can upgrade the of LDS02 for bug fix, new features, or change working region. The upgrade instruction is here: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
Xiaoling 1.2 494
495
Xiaoling 1.5 496 == 7.2 How to change the LoRa Frequency Bands/Region? ==
Xiaoling 1.2 497
Xiaoling 24.7 498 If user has for example US915 frequency and want to change it to AS923 frequency. User can follow the introduction for [[how to upgrade image>>||anchor="H7.1Howtoupgradetheimage3F"]]. When download the images, choose the required image file for download.
Xiaoling 1.2 499
500
Xiaoling 1.5 501 == 7.3 Can I disable uplink for each event to save battery life? ==
502
Xiaoling 1.2 503 Yes, User can use below method to disable this:
504
Xiaoling 1.6 505 (% style="color:#4f81bd" %)**via AT Command**:
Xiaoling 1.2 506
507 AT+DISALARM=1, End node will only send packet in TDC time.
508
Xiaoling 1.6 509 AT+DISALARM=0, End node will send packet in TDC time or status change for door sensor. 
Xiaoling 1.2 510
Xiaoling 1.6 511 (% style="color:#4f81bd" %)**via LoRaWAN downlink Command**:
Xiaoling 1.2 512
513 0xA701 : Equal to AT+DISALARM=1
514
515 0xA700 : Equal to AT+DISALARM=0
516
517
Xiaoling 1.5 518 = 8. Order Info =
Xiaoling 1.2 519
Xiaoling 44.5 520 **Part Number: (% style="color:blue" %)LDS02-XXX(%%)**
Xiaoling 1.2 521
Xiaoling 1.6 522 (% style="color:blue" %)**XXX:**
Xiaoling 1.2 523
Xiaoling 1.10 524 * (% style="color:red" %)**EU433**(%%): frequency  bands EU433
525 * (% style="color:red" %)**EU868**(%%): frequency  bands EU868
526 * (% style="color:red" %)**KR920**(%%): frequency  bands KR920
Xiaoling 1.6 527 * (% style="color:red" %)**CN470**(%%): frequency bands CN470
Xiaoling 1.10 528 * (% style="color:red" %)**AS923**(%%): frequency  bands AS923
Xiaoling 1.6 529 * (% style="color:red" %)**AU915**(%%): frequency bands AU915
Xiaoling 1.10 530 * (% style="color:red" %)**US915**(%%): frequency bands  US915
531 * (% style="color:red" %)**IN865**(%%):  frequency bands  IN865
Xiaoling 1.6 532 * (% style="color:red" %)**CN779**(%%): frequency bands CN779
Xiaoling 1.2 533
Xiaoling 44.5 534
535
Xiaoling 1.4 536 = 9. Packing Info =
537
Xiaoling 1.2 538 **Package Includes**:
539
Xiaoling 44.7 540 * LDS02 x 1
Xiaoling 1.2 541
Xiaoling 44.7 542 **Dimension and weight**:
Xiaoling 44.6 543
Xiaoling 44.7 544 * Device Size: 69.2 x 29.2 x 14.8 mm
Xiaoling 44.6 545
Xiaoling 44.7 546
547
Xiaoling 31.2 548 = 10. Support =
Xiaoling 1.2 549
550 * 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.
551 * 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:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
552
Xiaoling 44.3 553
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