Version 73.1 by Dilisi S on 2025/01/28 02:57
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13 **Table of Contents:**
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15 {{toc/}}
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24
25 = 1. Introduction =
26
27 == 1.1 What is the LWL02 LoRaWAN Water Leak Sensor ==
28
29
30 The Dragino LWL02 is a (% style="color:#4f81bd" %)**LoRaWAN Water Leak Sensor**(%%) equipped with two external metal probes. When water is detected between the two metal probes, the LWL02 identifies a water leak and sends an uplink to the registered LoRaWAN network server.
31
32 The LWL02 is powered by (% style="color:#4f81bd" %)**2 x AAA batteries**(%%) and is designed for long-term use. These two batteries can support approximately 16,000 to 70,000 uplink packets, resulting in a battery life of 2 to 10 years. Once the batteries are depleted, users can easily open the enclosure and replace them with standard AAA batteries.
33
34 The LWL02 sends data periodically every day and also for each water leak event. It records the number of water leak occurrences and calculates the duration of the most recent leak. Users can disable uplinks for each individual water leak event if desired. In this case, the device will count each event and send the data periodically.
35
36 Each LWL02 comes preloaded with a unique set of key/EUIs for LoRaWAN registration. By registering these keys to the LoRaWAN network server, the device will automatically connect upon powering on.
37
38 (((
39
40 )))
41
42 [[image:image-20220927113420-3.png]]
43
44
45 == 1.2 Features ==
46
47
48 * **LoRaWAN Class A v1.0.3**
49 * **Frequency Bands:** CN470, EU433, KR920, US915, EU868, AS923, AU915, IN865, RU864
50 * **SX1262 LoRa Core**
51 * **Water Leak Detection**
52 * **2 x AAA LR03 Batteries**
53 * **AT Commands** to change parameters
54 * **Periodic Uplink** and uplink triggered by open/close actions
55 * **Remote Configuration** of parameters via LoRa Downlink
56 * **Firmware Upgradable** via programming port
57
58 == 1.3 Storage & Operation Temperature ==
59
60
61 -10 ~~ 50 °C  or -40 ~~ 60 °C (depending on the battery type; see [[FAQ>>||anchor="H7.6Whyiseedifferentworkingtemperatureforthedevice3F"]])
62
63
64 == 1.4 Applications ==
65
66
67 * Smart Buildings & Home Automation
68 * Logistics and Supply Chain Management
69 * Smart Metering
70 * Smart Agriculture
71 * Smart Cities
72 * Smart Factory
73
74 == 1.5 Dimensions ==
75
76
77 [[image:image-20220608143952-2.png]]
78
79
80 [[image:1654670405145-346.png]]
81
82
83 == 1.6 Firmware Change log ==
84
85
86 (((
87 The LWL02 uses the same firmware as the LDS01:  [[https:~~/~~/www.dropbox.com/sh/6ls5i0zsvujvbc8/AABe3V5aQXdy7zSxEdEA3DHOa?dl=0>>https://www.dropbox.com/sh/6ls5i0zsvujvbc8/AABe3V5aQXdy7zSxEdEA3DHOa?dl=0]]
88 )))
89
90
91 = 2. Power ON LWL02 =
92
93
94 When you receive the LWL02, open the enclosure and insert 2 AAA batteries to power it on. The [[LED>>||anchor="H4.7LEDs"]] will blink when the device is powered.
95
96
97 = 3. How to install LWL02 =
98
99
100 **Fixing with screws:**
101
102 * Detach the bottom lid of the enclosure. You will notice two holes on the bottom lid for inserting screws. First, attach the bottom lid to the surface using screws. Then snap the top part of the enclosure onto the bottom. You will hear a clicking sound once they are securely fitted together.
103
104 [[image:image-20231222114059-1.jpeg||height="412" width="624"]]
105
106
107 **Fixing with double-sided adhesive pads:**
108
109 * A double-sided adhesive pad is included with the LWL02. First remove the protective backing of one side only. Then affix it on the bottom of the sensor enclosure. Once the tape is in place, remove the remaining protective backing and secure the enclosure to the surface.
110
111 [[image:image-20231222114211-2.jpeg||height="409" width="613"]]
112
113
114 (((
115 When installing the LWL02 on a wall, please follow the instructions as shown in the image below to ensure the water leak probe is submerged in water for detection purposes. The LWL02 main body is not waterproof, so please avoid allowing water to enter the main body.
116
117
118 )))
119
120 [[image:image-20220608144447-4.png]]
121
122
123 = 4. Operation Mode =
124
125 == 4.1 How It works? ==
126
127
128 (((
129 The LDS02 is configured as a LoRaWAN Class A device by default. It contains a DevEUI, AppEUI, and AppKey, which allow it to join a LoRaWAN network using OTAA (Over-The-Air Activation). To connect the LWL02 to a LoRaWAN network, you need to configure these keys and identifiers with the LoRaWAN network server first, and then [[power on>>||anchor="H2.PowerONLWL02"]] the LWL02. The device will automatically join the network using OTAA. This device information can be found in your package, printed on a sticker.
130
131
132 [[image:image-20230426084834-1.png||height="239" width="515"]]
133
134
135 )))
136
137 (((
138 If you cannot set the device registration information, such as the DevEUI, AppEUI, and AppKey, in the network server, you must use the information generated by the network server, which differs from the information already stored on the device. In this case, you can use [[AT Command>>||anchor="H6.UseATCommand"]] to write the new information to the device.
139 )))
140
141
142 == 4.2 Example to joining a LoRaWAN network ==
143
144
145
146 The following figure shows how the LWL02 connects to [[The Things Stack>>url:https://eu1.cloud.thethings.network/]]. The LWL02 sends messages (uplinks) to The Things Stack via a LoRaWAN gateway (e.g., Dragino LPS8N) and can also receive messages (downlinks) from The Things Stack. The Things Stack can be integrated with ThingsEye, allowing it to forward uplinks to ThingsEye. ThingsEye is an IoT platform used for visualizing and analyzing sensor data. You can also send downlinks from ThingsEye (via The Things Stack) to the LWL02.
147
148 [[image:image-20220927113401-2.png]]
149
150
151 (((
152 The LWL02 has a water leak detection probe, as shown above. When water is present between the two probes, they will short-circuit and generate a water leak event, sending the status to the LoRaWAN server. The LWL02 uplinks the following types of messages to the server:
153
154 * A keep-alive message, sent once per day.
155 * An emergency event message when a water leak is detected ([[this alarm event can be disabled>>||anchor="H7.3CanIdisableuplinkforeacheventtosavebatterylife3F"]]).
156 * A periodic update every 10 minutes while in a water leak state.
157 * A message when switching from a water leak state to no water leak ([[this alarm event can be disabled>>||anchor="H7.3CanIdisableuplinkforeacheventtosavebatterylife3F"]]).
158
159 === 4.2.1 Setting up ===
160
161 * Sign up for a free account with [[The Things Stack Sandbox>>url:https://eu1.cloud.thethings.network]] if you do not have one yet.
162 * Log in to your The Things Stack Sandbox account.
163 * Create an **application** with The Things Stack if you do not have one yet (E.g., dragino-docs)
164 )))
165
166
167 [[image:1654671794691-956.png]]
168
169
170 * Go to your application's page and click on the **End devices** in the left menu.
171 * On the End devices page, click on **+ Register end device**.
172
173
174
175 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/WebHome/lds02-step-5.png?rev=1.1||alt="lds02-step-5.png"]]
176
177
178 * Two registration options are available:
179 ** Using the LoRaWAN Device Repositoty
180 ** Manual registration
181
182 === 4.2.2 Using the LoRaWAN Device Repository ===
183
184 * On the **Register end device** page:
185 ** Select the option **Select the end device in the LoRaWAN Device Repository **under **Input method**.
186 ** Select the **End device brand**, **Model**, **Hardware version**, **Firmware version**, and **Profile (Region)** from the respective dropdown lists.
187 *** **End device brand**: Dragino Technology Co., Limited
188 *** **Model**: LWL02 - Door Sensor
189 *** **Hardware ver**: Unknown
190 *** **Firmware ver**: 1.6
191 *** **Profile (Region)**: Select the region that matches your device.
192 ** Select the **Frequency plan** that matches your device from the **Frequency plan** dropdown list.
193 ** Enter the **AppEUI** in the **JoinEUI** field and click the **Confirm** button. If The Things Stack accepts the JoinEUI you provided, it will display the message 'This end device can be registered on the network.
194
195
196
197
198 [[image:1654671820156-640.png]]
199
200
201 [[image:1654671832011-696.png]]
202
203 * In the **DevEUI** field, enter the **DevEUI**.
204 * In the **AppKey** field, enter the **AppKey.**
205 * In the **End device ID** field, enter a unique name for your LDS02 within this application.
206 * Under **After registration**, select the **View registered end device** option.
207 * Click **Register end device** button.
208
209
210 [[image:1654671889112-678.png]]
211
212
213
214 * You will be navigated to the Device overview page.
215
216
217
218
219 * Click on the Live Data tab and then **[[Power on>>path:#H2.PowerONLDS02]]** the LWL02. It will first join The Things Stack network server. You can confirm this by looking for the Join-request and Join-accept messages. After successfully joining the network, the LWL02 will start sending uplink messages to The Things Stack, and you can see them in the **Live Data** panel.
220
221
222
223 [[image:1654681465260-713.png]]
224
225
226 == 4.3 Uplink Payload ==
227
228
229 The uplink payload is a total of 10 bytes.
230
231 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:732px" %)
232 |(% style="background-color:#4f81bd; color:white; width:60px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:60px" %)**2**|(% style="background-color:#4f81bd; color:white; width:60px" %)**1**|(% style="background-color:#4f81bd; color:white; width:100px" %)**3**|(% style="background-color:#4f81bd; color:white; width:110px" %)**3**|(% style="background-color:#4f81bd; color:white; width:153px" %)**1**
233 |value|Status&BAT|(((
234 MOD
235 Always:0x02
236 )))|(% style="width:126px" %)Total_water_leak_events|(% style="width:140px" %)(((
237 Last  water leak duration (unit:min)
238 )))|(% style="width:153px" %)(((
239 Alarm status (Only used in
240 LWL02) Always:0x00
241 )))
242
243 **Example:**
244
245 [[image:1654672186477-234.png]]
246
247
248 (((
249 The **payload decoder** for The Things Stack can be downloaded from:  [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder/tree/main/LWL02]]
250 )))
251
252
253 == 4.4 Downlink Payload ==
254
255
256 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:505px" %)
257 |=(% style="width: 182px;background-color:#4F81BD;color:white" %)**Downlink Control Type**|=(% style="width: 96px;background-color:#4F81BD;color:white" %)**Type Code**|=(% style="width: 227px;background-color:#4F81BD;color:white" %)**Downlink payload size(bytes)**
258 |(% style="width:180px" %)TDC (Transmit Time Interval—Keep Alive Interval)|(% style="width:80px" %)0x01|(% style="width:150px" %)4
259 |(% style="width:180px" %)RESET|(% style="width:80px" %)0x04|(% style="width:224px" %)2
260 |(% style="width:180px" %)[[Set confirmed mode>>||anchor="HTypeCode0x05"]]|(% style="width:80px" %)0x05|(% style="width:150px" %)2
261 |(% style="width:180px" %)[[Clear Counting>>||anchor="HTypeCode0xA6"]]|(% style="width:80px" %)0xA6|(% style="width:150px" %)2
262 |(% style="width:180px" %)[[Enable/Disable Alarm>>||anchor="HTypeCode0xA7"]]|(% style="width:80px" %)0xA7|(% style="width:150px" %)2
263 |(% style="width:180px" %)[[Control ADR/DR>>||anchor="HTypeCode0xA8"]]|(% style="width:80px" %)0xA8|(% style="width:150px" %)3
264 |(% style="width:180px" %)[[Set Alarm Timeout>>||anchor="HTypeCode0xA9"]]|(% style="width:80px" %)0xA9|(% style="width:150px" %)4
265
266
267 The following image illustrates how to send a downlink payload from The Things Stack.
268
269 [[image:1654673412319-976.png]]
270
271
272 === (% style="color:#037691" %)**Type Code 0x01**(%%) ===
273
274 For example, if the payload is **0100003C**, the LWL02's Keep Alive interval is set to **0x00003C (60 seconds)**.
275
276
277 === (% style="color:#037691" %)**Type Code 0x04**(%%) ===
278
279 For example, if the payload is **0x04FF**, it **resets** the LWL02.
280
281
282 === (% style="color:#037691" %)**Type Code 0x05**(%%) ===
283
284 * The payload **0x05 00** sets the uplink to LoRaWAN **unconfirmed** mode.
285 * The payload **0x05 01** sets the uplink to LoRaWAN **confirmed** mode
286
287 === (% style="color:#037691" %)**Type Code 0xA6**(%%) ===
288
289 The payload **0xA601** is used to "**clear the counting**." For the LWL02, it resets both the count numbers and the time.
290
291
292 === (% style="color:#037691" %)**Type Code 0xA7**(%%) ===
293
294 * The payload **0xA7 01** is equivalent to **AT+DISALARM=1**.
295 * The payload **0xA7 00** is Equivalent to **AT+DISALARM=0**.
296
297 === (% style="color:#037691" %)**Type Code 0xA8**(%%) ===
298
299 **Downlink Payload Format**: 0xA8 AA BB
300
301 * **0xA8**: Type code
302 * **AA**:
303 ** **1**: Enable ADR
304 ** **0**: Disable ADR (same as the **AT+CADR** command)
305 * **BB**: Set DR (same as **AT+CDATARATE**; only valid after ADR = 0)
306
307 **Example**: 0xA8 00 02: Set ADR = 0 and DR = 2
308
309
310 === (% style="color:#037691" %)**Type Code 0xA9**(%%) ===
311
312 For more information, see [[Alarm Base Timeout>>||anchor="H4.6AlarmBaseonTimeout"]].
313
314
315 == 4.5 Integrate with Datacake ==
316
317
318 (((
319 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:
320 )))
321
322
323 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
324
325 (% 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:
326
327
328 [[image:1654674520913-519.png]]
329
330
331 [[image:1654674530910-914.png]]
332
333
334 [[image:1654674543078-401.png]]
335
336
337 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Datacake.
338
339 (% style="color:blue" %)**Step 4**(%%): Search LWL02 and add DevEUI.
340
341 [[image:1654674556510-911.png]]
342
343
344 == 4.6 Alarm Based on Timeout ==
345
346
347 (((
348 The LWL02 can monitor the timeout for a status change. This feature can be used to monitor events, such as the duration of water leakage, and more.
349
350 (% style="color:red" %)**(This command is specifically applicable to LDS02. For the LWL02, this command can only enable the alarm, but the alarm time is fixed at 10 minutes）**
351 )))
352
353 (((
354 You can configure this feature using the following:
355 )))
356
357 (((
358
359 )))
360
361 (((
362 **AT Command Configuration:**
363
364 * (% style="color:red" %)**AT+TTRIG=1,30**(%%) ~-~-> When the status changes from "**close**" to "**open**," the LWL02 remains in the "**open**" status for more than 30 seconds. Then it will send an uplink packet. The alarm bit (the lowest bit of the 10th byte of the payload) in this uplink packet is set to 1.
365 * (% style="color:red" %)**AT+TTRIG=0,0**(%%) ~-~-> Default value, disables the timeout alarm.
366
367
368 )))
369
370 (((
371 **Downlink Command Configuration:**
372
373 **Command**: 0xA9 AA BB CC
374
375 * **0xA9**: Type Code
376 * **AA**: Status to be monitored
377 * **BB CC**: Timeout
378
379 If you send **0xA9 01 00 1E**, it is equivalent to **AT+TTRIG=1,30**.
380
381 Or, if you send** 0xA9 00 00 00**, it is equivalent to **AT+TTRIG=0,0** (disables the timeout alarm).
382 )))
383
384 (((
385
386 )))
387
388 == 4.7 LED Indicators ==
389
390
391 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:463px" %)
392 |=(% style="width: 186px;background-color:#4F81BD;color:white" %)**Action**|=(% style="width: 277px;background-color:#4F81BD;color:white" %)**LED behavior**
393 |(% style="width:184px" %)Power On|(% style="width:275px" %)(% style="color:green" %)**GREEN LED on for 1s, **(% style="color:red" %)**RED LED on for 1s,**(%%)** (% style="color:blue" %)BLUE LED on for 1s(%%)**
394 |(% style="width:184px" %)Joined successfully|(% style="width:275px" %)(% style="color:green" %)**GREEN LED **(%%)on for 5s
395 |(% style="width:184px" %)Send an uplink message|(% style="width:275px" %)(% style="color:green" %)**GREEN LED**(%%) blinks once
396 |(% style="width:184px" %)Receive a downlink message|(% style="width:275px" %)(% style="color:blue" %)**BLUE LED**(%%) blinks once
397
398 = 5. Battery =
399
400
401 The LWL02 is equipped with 2 AAA LR03 batteries.
402
403
404 == 5.1 Replacing Batteries ==
405
406
407 (((
408 The LDS02 is equipped with 2 x AAA LR03 batteries. If the batteries are running low (showing 2.1V on the platform), the user can buy generic AAA batteries and replace them.
409
410 **Note:**
411
412 1. The LDS02 doesn’t have any screws; you can use a nail to open it from the middle.
413 1. Make sure the direction is correct when installing the AAA batteries.
414
415 **Important Note: **Ensure you use new AAA LR03 batteries, and that the battery surfaces are not damaged.
416
417
418 Example of AAA LR03 battery:
419 )))
420
421 [[image:1654675278044-307.png]]
422
423
424 == 5.2 Power Consumption Analysis ==
425
426
427 (((
428
429
430 Dragino battery-powered products all run in Low Power mode. You can refer to the guidelines from this [[**link**>>url:https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]] to estimate battery life.
431 )))
432
433 = 6. Use AT Commands =
434
435 == 6.1 Access AT Commands ==
436
437
438 The LWL02 supports an AT command set. You can use a USB to TTL adapter to configure the LWL02 via AT commands, as shown below.
439
440 [[image:image-20221226104917-1.png||height="557" width="850"]]
441
442
443 (((
444 On the PC, the user needs to set the **serial tool** (such as [[PuTTY>>url:https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]] or SecureCRT) baud rate to **115200** to access the serial console of the LWL02. Below is the output for reference:
445 )))
446
447 (((
448 The AT command access password is (% style="color:red" %)**123456**.
449 )))
450
451 [[image:1654675618022-630.png]]
452
453
454 (((
455 Each AT command needs to have an **ENTER** key pressed at the end before sending.
456
457 When entering the first command, the **RED LED** will turn on, and the user can now input AT commands. After entering all the required AT commands, input **AT+CLPM=1** to set the device to Low Power mode, and the **RED LED** will turn off.
458
459 More details can be found in the [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]].
460 )))
461
462 (((
463 [[url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]]
464 )))
465
466
467 = 7. FAQ =
468
469 == 7.1 How to upgrade the image? ==
470
471
472 You can upgrade the LWL02 for bug fixes, new features, or to change the working region. The upgrade instructions are here: [[LDS02/LWL02 Update method>>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/#H7.1Howtoupgradetheimage3F]].
473
474
475 == 7.2 How to change the LoRa Frequency Bands/Region? ==
476
477
478 If you have the US915 frequency and want to change it to the AS923 frequency, you can follow the instructions for upgrading the image in [[how to upgrade image>>||anchor="H7.1Howtoupgradetheimage3F"]] section. When downloading the image, select the required file.
479
480
481
482 == 7.3 Can I disable uplinks for each event to save battery life? ==
483
484
485 Yes, you can use one of the method below:
486
487
488 **Via AT Command**:
489
490 **AT+DISALARM=1** : The end node will only send packets during the TDC time.
491
492 **AT+DISALARM=0** : The end node will send packets either during the TDC time or when there is a status change in the door sensor.
493
494
495 **Via LoRaWAN downlink Command**:
496
497 **0xA701** : Equivalent to AT+DISALARM=1
498
499 **0xA700** : Equivalent to AT+DISALARM=0
500
501
502
503 == 7.4 How can I change the Subband for LWL02? ==
504
505
506 **Before v1.6 firmware:**
507 LDS02 operates in Subband 2 by default in the AU915/US915 band. If the LoRaWAN server operates on another subband, LDS02 may have trouble joining the server. In this case, the user can use the AT command to change the subband. See the AT Command chapter for hardware connection details. Below are the steps to change the subband:
508
509 1. Press the reset button.
510 1. Send the password **123456**.
511 1. Send the command: **AT+CFREQBANDMASK=0006** (use 0001 for Subband 1, 0002 for Subband 2, etc.).
512 1. Press the reset button to restart and switch to the new subband.
513
514 Example output:
515
516 (% class="mark small" %)[3369]DRAGINO LWL01 Device
517 [3370]Frequency Band: US915 v1.5
518 [3373]OTAA
519 [3374]DevEui= 7896785455246354
520 [3377]class type A
521 [3379]freq mode intra(%%)
522 (% class="mark mark small small" %)[3381]**scan chn mask 0x0002   ~-~-> use subband 2**
523
524 (% class="mark small" %)LM502:~~# [10793]txDone
525 123456       ~-~-> ENTER PASSWORD
526 Correct Password
527
528 (% class="mark small" %)[105115]rxTimeOut
529 **AT+CFREQBANDMASK=0001   ~-~-> Change to Subband1**
530 OK
531
532 (% class="mark small" %)[3371]DRAGINO LWL01 Device
533 [3373]Frequency Band: US915 v1.5
534 [3376]OTAA
535 [3377]DevEui= 7896785455246354
536 [3380]class type A
537 [3382]freq mode intra
538 [3384]**scan chn mask 0x0001  ~-~-> reboot and works on Subband1 now**
539
540
541 **Since firmware v1.6:**
542
543 LDS02 works with the channel mask 0x0000, which covers all subbands. Therefore, there is no need to use AT commands to change the subband, and it will work for every subband.
544
545
546
547 == 7.5 My sensor worked for Helium AU915 before, but now it doesn't work. Why? ==
548
549
550
551 This is a sub-band issue. See chapter 7.4. Helium changed the sub-band for AU915 from subband 2 to subband 6, which caused the sensor to stop working.
552
553
554 == 7.6 Why do I see different working temperatures for the device? ==
555
556
557 The working temperature range of the device depends on the battery the user chooses.
558
559 * A standard AAA battery can support a working range of -10°C to 50°C.
560 * A special AAA battery can support a working range of -40°C to 60°C. For example, [[Energizer L92>>url:https://data.energizer.com/pdfs/l92.pdf]][[url:https://data.energizer.com/pdfs/l92.pdf]]
561
562 = 8. Ordering Information =
563
564
565 **Part Number: (% style="color:blue" %)LWL02-XXX(%%)**
566
567 (% style="color:blue" %)**XXX:**
568
569 * (% style="color:red" %)**EU433**(%%): frequency  bands EU433
570 * (% style="color:red" %)**EU868**(%%): frequency  bands EU868
571 * (% style="color:red" %)**KR920**(%%): frequency  bands KR920
572 * (% style="color:red" %)**CN470**(%%): frequency bands CN470
573 * (% style="color:red" %)**AS923**(%%): frequency  bands AS923
574 * (% style="color:red" %)**AU915**(%%): frequency bands AU915
575 * (% style="color:red" %)**US915**(%%): frequency bands  US915
576 * (% style="color:red" %)**IN865**(%%):  frequency bands  IN865
577
578 = 9. Packaging Information =
579
580
581 **Package Includes**:
582
583 * LWL02 x 1
584
585 = 10. Support =
586
587
588 * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different time zones, we cannot offer live support. However, your questions will be answered as soon as possible during the aforementioned hours.
589 * Please provide as much information as possible regarding your inquiry (e.g., product models, a detailed description of the problem, and steps to replicate it), and send an email to  [[support@dragino.com>>url:file:///D:/市场资料/说明书/LoRa/LT系列/support@dragino.com]].
590
591

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