Version 75.1 by Dilisi S on 2025/01/28 03:12
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4 [[image:image-20220927133941-2.png]]
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13 **Table of Contents:**
14
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** account.
163 * Create an **application** with The Things Stack if you do not have one yet.
164 ** On the left navigation, click **Applications**.
165 ** Then click **+ Add Application** button.
166
167
168 [[image:lwl02-4.png]]
169
170 * On the **Create Application **page, configure the following:
171 ** **Application ID**: Provide a unique identification for your application within The Things Stack.
172 ** **Application name**: (optional) Provide a descriptive name.
173 ** **Description**: (optional) Provide a description.
174 * Click on **Create application **button.
175 )))
176
177
178 [[image:lwl02-5.png]]
179
180
181 * Go to the newly created application and click on the **End devices** in the left menu.
182 * On the End devices page, click on **+ Register end device**.
183
184
185 [[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"]]
186
187
188 * Two registration options are available:
189 ** Using the LoRaWAN Device Repositoty
190 ** Manual registration
191
192 === 4.2.2 Using the LoRaWAN Device Repository ===
193
194 * On the **Register end device** page:
195 ** Select the option **Select the end device in the LoRaWAN Device Repository **under **Input method**.
196 ** Select the **End device brand**, **Model**, **Hardware version**, **Firmware version**, and **Profile (Region)** from the respective dropdown lists.
197 *** **End device brand**: Dragino Technology Co., Limited
198 *** **Model**: LWL02 - Water Leak Sensor
199 *** **Hardware ver**: Unknown
200 *** **Firmware ver**: 1.6
201 *** **Profile (Region)**: Select the region that matches your device.
202 ** Select the **Frequency plan** that matches your device from the **Frequency plan** dropdown list.
203 ** 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.
204
205
206 [[image:lwl02-1.png]]
207
208
209
210
211 * In the **DevEUI** field, enter the **DevEUI**.
212 * In the **AppKey** field, enter the **AppKey.**
213 * In the **End device ID** field, enter a unique name for your LDS02 within this application.
214 * Under **After registration**, select the **View registered end device** option.
215 * Click **Register end device** button.
216
217
218
219 [[image:lwl02-2.png]]
220
221
222
223 * You will be navigated to the Device overview page.
224
225
226 [[image:lwl02-3.png]]
227
228
229 * Click on the Live Data tab and then **Power on** 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.
230
231
232 [[image:1654681465260-713.png]]
233
234
235 == 4.3 Uplink Payload ==
236
237
238 The uplink payload is a total of 10 bytes.
239
240 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:732px" %)
241 |(% 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**
242 |value|Status&BAT|(((
243 MOD
244 Always:0x02
245 )))|(% style="width:126px" %)Total_water_leak_events|(% style="width:140px" %)(((
246 Last  water leak duration (unit:min)
247 )))|(% style="width:153px" %)(((
248 Alarm status (Only used in
249 LWL02) Always:0x00
250 )))
251
252 **Example:**
253
254 [[image:1654672186477-234.png]]
255
256
257 (((
258 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]]
259 )))
260
261
262 == 4.4 Downlink Payload ==
263
264
265 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:505px" %)
266 |=(% 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)**
267 |(% style="width:180px" %)TDC (Transmit Time Interval—Keep Alive Interval)|(% style="width:80px" %)0x01|(% style="width:150px" %)4
268 |(% style="width:180px" %)RESET|(% style="width:80px" %)0x04|(% style="width:224px" %)2
269 |(% style="width:180px" %)[[Set confirmed mode>>||anchor="HTypeCode0x05"]]|(% style="width:80px" %)0x05|(% style="width:150px" %)2
270 |(% style="width:180px" %)[[Clear Counting>>||anchor="HTypeCode0xA6"]]|(% style="width:80px" %)0xA6|(% style="width:150px" %)2
271 |(% style="width:180px" %)[[Enable/Disable Alarm>>||anchor="HTypeCode0xA7"]]|(% style="width:80px" %)0xA7|(% style="width:150px" %)2
272 |(% style="width:180px" %)[[Control ADR/DR>>||anchor="HTypeCode0xA8"]]|(% style="width:80px" %)0xA8|(% style="width:150px" %)3
273 |(% style="width:180px" %)[[Set Alarm Timeout>>||anchor="HTypeCode0xA9"]]|(% style="width:80px" %)0xA9|(% style="width:150px" %)4
274
275 The following image illustrates how to send a downlink payload from The Things Stack.
276
277 [[image:1654673412319-976.png]]
278
279
280 === (% style="color:#037691" %)**Type Code 0x01**(%%) ===
281
282 For example, if the payload is **0100003C**, the LWL02's Keep Alive interval is set to **0x00003C (60 seconds)**.
283
284
285 === (% style="color:#037691" %)**Type Code 0x04**(%%) ===
286
287 For example, if the payload is **0x04FF**, it **resets** the LWL02.
288
289
290 === (% style="color:#037691" %)**Type Code 0x05**(%%) ===
291
292 * The payload **0x05 00** sets the uplink to LoRaWAN **unconfirmed** mode.
293 * The payload **0x05 01** sets the uplink to LoRaWAN **confirmed** mode
294
295 === (% style="color:#037691" %)**Type Code 0xA6**(%%) ===
296
297 The payload **0xA601** is used to "**clear the counting**." For the LWL02, it resets both the count numbers and the time.
298
299
300 === (% style="color:#037691" %)**Type Code 0xA7**(%%) ===
301
302 * The payload **0xA7 01** is equivalent to **AT+DISALARM=1**.
303 * The payload **0xA7 00** is Equivalent to **AT+DISALARM=0**.
304
305 === (% style="color:#037691" %)**Type Code 0xA8**(%%) ===
306
307 **Downlink Payload Format**: 0xA8 AA BB
308
309 * **0xA8**: Type code
310 * **AA**:
311 ** **1**: Enable ADR
312 ** **0**: Disable ADR (same as the **AT+CADR** command)
313 * **BB**: Set DR (same as **AT+CDATARATE**; only valid after ADR = 0)
314
315 **Example**: 0xA8 00 02: Set ADR = 0 and DR = 2
316
317
318 === (% style="color:#037691" %)**Type Code 0xA9**(%%) ===
319
320 For more information, see [[Alarm Base Timeout>>||anchor="H4.6AlarmBaseonTimeout"]].
321
322
323 == 4.5 Integrate with Datacake ==
324
325
326 (((
327 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:
328 )))
329
330
331 (% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the network at this time.
332
333 (% 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:
334
335
336 [[image:1654674520913-519.png]]
337
338
339 [[image:1654674530910-914.png]]
340
341
342 [[image:1654674543078-401.png]]
343
344
345 (% style="color:blue" %)**Step 3**(%%): Create an account or log in Datacake.
346
347 (% style="color:blue" %)**Step 4**(%%): Search LWL02 and add DevEUI.
348
349 [[image:1654674556510-911.png]]
350
351
352 == 4.6 Alarm Based on Timeout ==
353
354
355 (((
356 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.
357
358 (% 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）**
359 )))
360
361 (((
362 You can configure this feature using the following:
363 )))
364
365 (((
366
367 )))
368
369 (((
370 **AT Command Configuration:**
371
372 * (% 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.
373 * (% style="color:red" %)**AT+TTRIG=0,0**(%%) ~-~-> Default value, disables the timeout alarm.
374
375
376 )))
377
378 (((
379 **Downlink Command Configuration:**
380
381 **Command**: 0xA9 AA BB CC
382
383 * **0xA9**: Type Code
384 * **AA**: Status to be monitored
385 * **BB CC**: Timeout
386
387 If you send **0xA9 01 00 1E**, it is equivalent to **AT+TTRIG=1,30**.
388
389 Or, if you send** 0xA9 00 00 00**, it is equivalent to **AT+TTRIG=0,0** (disables the timeout alarm).
390 )))
391
392 (((
393
394 )))
395
396 == 4.7 LED Indicators ==
397
398
399 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:463px" %)
400 |=(% style="width: 186px;background-color:#4F81BD;color:white" %)**Action**|=(% style="width: 277px;background-color:#4F81BD;color:white" %)**LED behavior**
401 |(% 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(%%)**
402 |(% style="width:184px" %)Joined successfully|(% style="width:275px" %)(% style="color:green" %)**GREEN LED **(%%)on for 5s
403 |(% style="width:184px" %)Send an uplink message|(% style="width:275px" %)(% style="color:green" %)**GREEN LED**(%%) blinks once
404 |(% style="width:184px" %)Receive a downlink message|(% style="width:275px" %)(% style="color:blue" %)**BLUE LED**(%%) blinks once
405
406 = 5. Battery =
407
408
409 The LWL02 is equipped with 2 AAA LR03 batteries.
410
411
412 == 5.1 Replacing Batteries ==
413
414
415 (((
416 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.
417
418 **Note:**
419
420 1. The LDS02 doesn’t have any screws; you can use a nail to open it from the middle.
421 1. Make sure the direction is correct when installing the AAA batteries.
422
423 **Important Note: **Ensure you use new AAA LR03 batteries, and that the battery surfaces are not damaged.
424
425
426 Example of AAA LR03 battery:
427 )))
428
429 [[image:1654675278044-307.png]]
430
431
432 == 5.2 Power Consumption Analysis ==
433
434
435 (((
436
437
438 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.
439 )))
440
441 = 6. Use AT Commands =
442
443 == 6.1 Access AT Commands ==
444
445
446 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.
447
448 [[image:image-20221226104917-1.png||height="557" width="850"]]
449
450
451 (((
452 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:
453 )))
454
455 (((
456 The AT command access password is (% style="color:red" %)**123456**.
457 )))
458
459 [[image:1654675618022-630.png]]
460
461
462 (((
463 Each AT command needs to have an **ENTER** key pressed at the end before sending.
464
465 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.
466
467 More details can be found in the [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]].
468 )))
469
470 (((
471 [[url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]]
472 )))
473
474
475 = 7. FAQ =
476
477 == 7.1 How to upgrade the image? ==
478
479
480 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]].
481
482
483 == 7.2 How to change the LoRa Frequency Bands/Region? ==
484
485
486 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.
487
488
489
490 == 7.3 Can I disable uplinks for each event to save battery life? ==
491
492
493 Yes, you can use one of the method below:
494
495
496 **Via AT Command**:
497
498 **AT+DISALARM=1** : The end node will only send packets during the TDC time.
499
500 **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.
501
502
503 **Via LoRaWAN downlink Command**:
504
505 **0xA701** : Equivalent to AT+DISALARM=1
506
507 **0xA700** : Equivalent to AT+DISALARM=0
508
509
510
511 == 7.4 How can I change the Subband for LWL02? ==
512
513
514 **Before v1.6 firmware:**
515 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:
516
517 1. Press the reset button.
518 1. Send the password **123456**.
519 1. Send the command: **AT+CFREQBANDMASK=0006** (use 0001 for Subband 1, 0002 for Subband 2, etc.).
520 1. Press the reset button to restart and switch to the new subband.
521
522 Example output:
523
524 (% class="mark small" %)[3369]DRAGINO LWL01 Device
525 [3370]Frequency Band: US915 v1.5
526 [3373]OTAA
527 [3374]DevEui= 7896785455246354
528 [3377]class type A
529 [3379]freq mode intra(%%)
530 (% class="mark mark small small" %)[3381]**scan chn mask 0x0002   ~-~-> use subband 2**
531
532 (% class="mark small" %)LM502:~~# [10793]txDone
533 123456       ~-~-> ENTER PASSWORD
534 Correct Password
535
536 (% class="mark small" %)[105115]rxTimeOut
537 **AT+CFREQBANDMASK=0001   ~-~-> Change to Subband1**
538 OK
539
540 (% class="mark small" %)[3371]DRAGINO LWL01 Device
541 [3373]Frequency Band: US915 v1.5
542 [3376]OTAA
543 [3377]DevEui= 7896785455246354
544 [3380]class type A
545 [3382]freq mode intra
546 [3384]**scan chn mask 0x0001  ~-~-> reboot and works on Subband1 now**
547
548
549 **Since firmware v1.6:**
550
551 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.
552
553
554
555 == 7.5 My sensor worked for Helium AU915 before, but now it doesn't work. Why? ==
556
557
558
559 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.
560
561
562 == 7.6 Why do I see different working temperatures for the device? ==
563
564
565 The working temperature range of the device depends on the battery the user chooses.
566
567 * A standard AAA battery can support a working range of -10°C to 50°C.
568 * 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]]
569
570 = 8. Ordering Information =
571
572
573 **Part Number: (% style="color:blue" %)LWL02-XXX(%%)**
574
575 (% style="color:blue" %)**XXX:**
576
577 * (% style="color:red" %)**EU433**(%%): frequency  bands EU433
578 * (% style="color:red" %)**EU868**(%%): frequency  bands EU868
579 * (% style="color:red" %)**KR920**(%%): frequency  bands KR920
580 * (% style="color:red" %)**CN470**(%%): frequency bands CN470
581 * (% style="color:red" %)**AS923**(%%): frequency  bands AS923
582 * (% style="color:red" %)**AU915**(%%): frequency bands AU915
583 * (% style="color:red" %)**US915**(%%): frequency bands  US915
584 * (% style="color:red" %)**IN865**(%%):  frequency bands  IN865
585
586 = 9. Packaging Information =
587
588
589 **Package Includes**:
590
591 * LWL02 x 1
592
593 = 10. Support =
594
595
596 * 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.
597 * 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]].
598
599

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