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2 [[image:image-20250207150946-1.jpeg||height="553" width="553"]]
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11 **Table of Contents:**
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13 {{toc/}}
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22
23 = 1. Introduction =
24
25 == 1.1 What is the LWL02 LoRaWAN Water Leak Sensor ==
26
27
28 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.
29
30 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.
31
32 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.
33
34 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.
35
36
37
38 == 1.2 Features ==
39
40
41 * **LoRaWAN Class A v1.0.3**
42 * **Frequency Bands:** CN470, EU433, KR920, US915, EU868, AS923, AU915, IN865, RU864
43 * **SX1262 LoRa Core**
44 * **Water Leak Detection**
45 * **2 x AAA LR03 Batteries**
46 * **AT Commands** to change parameters
47 * **Periodic Uplink** and uplink triggered by open/close actions
48 * **Remote Configuration** of parameters via LoRa Downlink
49 * **Firmware Upgradable** via programming port
50
51 == 1.3 Storage & Operation Temperature ==
52
53
54 -10 ~~ 50 °C  or -40 ~~ 60 °C (depending on the battery type; see [[FAQ>>||anchor="H7.6Whyiseedifferentworkingtemperatureforthedevice3F"]])
55
56
57 == 1.4 Applications ==
58
59
60 * Smart Buildings & Home Automation
61 * Logistics and Supply Chain Management
62 * Smart Metering
63 * Smart Agriculture
64 * Smart Cities
65 * Smart Factory
66
67 == 1.5 Dimensions ==
68
69
70 [[image:image-20220608143952-2.png]]
71
72
73 [[image:1654670405145-346.png]]
74
75
76 == 1.6 Firmware Change log ==
77
78
79 (((
80 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]]
81 )))
82
83 == 1.7 Hardware Variant (Since LDWS v2.4 PCB) ==
84
85
86 Starting from the LDWS v2.4 motherboard, we made adjustments to the button and LED light of LWL02, and the corresponding adjustments were also made to the shell at the same time.
87
88
89
90 === 1.7.1 How to identify the old and new versions ===
91
92
93 Check the **external enclosure** for these differences:
94
95 ~1. RESET Button Hole
96
97 * New Version: Larger hole (Corresponding to the position of the RESET button on the motherboard).
98 * Old Version: Smaller hole (The original position of the LED).
99
100 2. LED
101
102 * New Version: Thinner circular area below RESET hole (for LED light transmission).
103 * Old Version: The small hole directly above the shell (Corresponding to the position of the LED on the motherboard).
104
105 3. Arrow Marking
106
107 * New Version: Edge-embossed arrow shape.
108 * Old Version: Fully recessed arrow shape.
109
110 (% style="color:blue" %)**Actual appearance comparison picture：**
111
112 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/WebHome/image-20250507161458-4.jpeg?width=665&height=456&rev=1.1||alt="image-20250507161458-4.jpeg"]]
113
114
115 === 1.7.2 RESET button & LED Display ===
116
117
118 **1. RESET button**
119
120 Restart the device through the physical reset button.
121
122 It is suitable for rapid restart when the equipment malfunctions (such as communication failure, sensor unresponsiveness).
123
124 * For old version, the RESET button was located inside the device enclosure, requiring the housing to be opened for access.
125 * For new version, the RESET button is located in a small hole in the device's case and can simply be pressed with a thin pin without opening the case.
126
127 Example:
128
129 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/WebHome/image-20250507172832-6.png?width=274&height=372&rev=1.1||alt="image-20250507172832-6.png"]]
130
131
132 **2. LED display**
133
134 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:463px" %)
135 |=(% style="width: 186px;background-color:#4F81BD;color:white" %)**Action**|=(% style="width: 277px;background-color:#4F81BD;color:white" %)**LED behavior**
136 |(% 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(%%)**
137 |(% style="width:184px" %)Joined successfully|(% style="width:275px" %)(% style="color:green" %)**GREEN LED **(%%)on for 5s
138 |(% style="width:184px" %)Send an uplink message|(% style="width:275px" %)(% style="color:green" %)**GREEN LED**(%%) blinks once
139 |(% style="width:184px" %)Receive a downlink message|(% style="width:275px" %)(% style="color:blue" %)**BLUE LED**(%%) blinks once
140
141 = 2. Power on LWL02 =
142
143
144 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.
145
146
147 = 3. How to Install LWL02 =
148
149
150 **Fixing with screws:**
151
152 * 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.
153
154 [[image:image-20231222114059-1.jpeg||height="412" width="624"]]
155
156
157 **Fixing with double-sided adhesive pads:**
158
159 * 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.
160
161 [[image:image-20231222114211-2.jpeg||height="409" width="613"]]
162
163
164 (((
165 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.
166
167
168 )))
169
170 [[image:image-20220608144447-4.png]]
171
172
173 = 4. Operation Mode =
174
175 == 4.1 How It works? ==
176
177
178 (((
179 The LWL02 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.
180
181
182 [[image:image-20230426084834-1.png||height="239" width="515"]]
183
184
185 )))
186
187 (((
188 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.
189 )))
190
191
192 == 4.2 Example to joining a LoRaWAN network ==
193
194
195
196 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.
197
198
199
200 [[image:lwl02-tts.jpg]]
201
202
203 (((
204 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:
205
206 * A keep-alive message, sent once per day.
207 * An emergency event message when a water leak is detected ([[this alarm event can be disabled>>||anchor="H7.3CanIdisableuplinkforeacheventtosavebatterylife3F"]]).
208 * A periodic update every 10 minutes while in a water leak state.
209 * A message when switching from a water leak state to no water leak ([[this alarm event can be disabled>>||anchor="H7.3CanIdisableuplinkforeacheventtosavebatterylife3F"]]).
210
211 === 4.2.1 Setting up ===
212
213 * Sign up for a free account with [[The Things Stack Sandbox>>url:https://eu1.cloud.thethings.network]] if you do not have one yet.
214 * Log in to your **The Things Stack** account.
215 * Create an **application** with The Things Stack if you do not have one yet.
216 ** On the left navigation, click **Applications**.
217 ** Then click **+ Add Application** button.
218
219 [[image:lwl02-4.png]]
220
221 * On the **Create Application **page, configure the following:
222 ** **Application ID**: Provide a unique identification for your application within The Things Stack.
223 ** **Application name**: (optional) Provide a descriptive name.
224 ** **Description**: (optional) Provide a description.
225 * Click on **Create application **button.
226 )))
227
228
229 [[image:lwl02-5.png]]
230
231
232 * Go to the newly created application and click on the **End devices** in the left menu.
233 * On the End devices page, click on **+ Register end device**.
234
235 [[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"]]
236
237
238 * Two registration options are available:
239 ** Using the LoRaWAN Device Repositoty
240 ** Manual registration
241
242 === 4.2.2 Using the LoRaWAN Device Repository ===
243
244 * On the **Register end device** page:
245 ** Select the option **Select the end device in the LoRaWAN Device Repository **under **Input method**.
246 ** Select the **End device brand**, **Model**, **Hardware version**, **Firmware version**, and **Profile (Region)** from the respective dropdown lists.
247 *** **End device brand**: Dragino Technology Co., Limited
248 *** **Model**: LWL02 - Water Leak Sensor
249 *** **Hardware ver**: Unknown
250 *** **Firmware ver**: 1.6
251 *** **Profile (Region)**: Select the region that matches your device.
252 ** Select the **Frequency plan** that matches your device from the **Frequency plan** dropdown list.
253 ** 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.
254
255 [[image:lwl02-1.png]]
256
257
258
259
260 * In the **DevEUI** field, enter the **DevEUI**.
261 * In the **AppKey** field, enter the **AppKey.**
262 * In the **End device ID** field, enter a unique name for your LWL02 within this application.
263 * Under **After registration**, select the **View registered end device** option.
264 * Click **Register end device** button.
265
266 [[image:lwl02-2.png]]
267
268
269
270 * You will be navigated to the Device overview page.
271
272 [[image:lwl02-3.png]]
273
274
275 * 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.
276
277 [[image:1654681465260-713.png]]
278
279
280 == 4.3 Uplink Payload ==
281
282
283 The uplink payload is a total of 10 bytes.
284
285 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
286 |(% style="background-color:#4f81bd; color:white; width:60px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:80px" %)**2**|(% style="background-color:#4f81bd; color:white; width:100px" %)**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:60px" %)**1**
287 |value|(% style="width:92px" %)Status & BAT|(% style="width:150px" %)(((
288 MOD Always:0x02
289 )))|(% style="width:126px" %)Total_water_leak_events|(% style="width:140px" %)(((
290 Last  water leak duration (unit:min)
291 )))|(% style="width:153px" %)(((
292 Alarm status
293 )))
294
295 === 4.3.1 Battery Info ===
296
297 Check the battery voltage:
298
299 Example 1: 0x0B88&3FFF = 2952mV
300
301 Example 2: 0xD152&3FFF = 4434mV
302
303
304 === 4.3.2 Status ===
305
306 Check the door state:
307
308 **Example**:
309
310 If the payload is: **0B**:  (0000 1011&0100 0000== 0), **DOOR_OPEN_STATUS** is 0（**CLOSE**）
311
312 If the payload is: **D1**: (1101 0001&0100 0000== 1), **DOOR_OPEN_STATUS** is 1（**OPEN**）
313
314
315 === 4.3.3 MOD ===
316
317 Check the working mode (MOD):
318
319 **Example:**
320
321 If the payload is: 02, the MOD is 2.
322
323
324 === 4.3.4 Total_water_leak_events ===
325
326 Get the total number of door open events:
327
328 **Example**:
329
330 If payload is: **00 00 93, **the total is 147 events.
331
332 If payload is: **00 00 00, **the total is 0 events.
333
334
335 === 4.3.5 Last  water leak duration (unit: min) ===
336
337 Get the last door open duration:
338
339 **Example:**
340
341 If the payload is: **00 00 25, **the last door open duration is 37 minutes.
342
343 If payload is: **00 00 01,** the last door open duration is 1 minute.
344
345
346 === 4.3.6 Alarm ===
347
348 Get alarm status.
349
350 **Example:**
351
352 If the payload is: 01:  (0001 & 0001== 1), the alarm status is 1
353
354 If the payload is: 00:  (0000 & 0001== 0), the alarm status is 0
355
356
357
358 **Example:**
359
360 [[image:1654672186477-234.png]]
361
362
363 (((
364 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]]
365 )))
366
367
368 == 4.4 Downlink Payload ==
369
370
371 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:505px" %)
372 |=(% 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)**
373 |(% style="width:180px" %)TDC (Transmit Time Interval—Keep Alive Interval)|(% style="width:80px" %)0x01|(% style="width:150px" %)4
374 |(% style="width:180px" %)RESET|(% style="width:80px" %)0x04|(% style="width:224px" %)2
375 |(% style="width:180px" %)[[Set confirmed mode>>||anchor="HTypeCode0x05"]]|(% style="width:80px" %)0x05|(% style="width:150px" %)2
376 |(% style="width:180px" %)[[Clear Counting>>||anchor="HTypeCode0xA6"]]|(% style="width:80px" %)0xA6|(% style="width:150px" %)2
377 |(% style="width:180px" %)[[Enable/Disable Alarm>>||anchor="HTypeCode0xA7"]]|(% style="width:80px" %)0xA7|(% style="width:150px" %)2
378 |(% style="width:180px" %)[[Control ADR/DR>>||anchor="HTypeCode0xA8"]]|(% style="width:80px" %)0xA8|(% style="width:150px" %)3
379 |(% style="width:180px" %)[[Set Alarm Timeout>>||anchor="HTypeCode0xA9"]]|(% style="width:80px" %)0xA9|(% style="width:150px" %)4
380
381 The following image illustrates how to send a downlink payload from The Things Stack.
382
383 [[image:1654673412319-976.png]]
384
385
386 === (% style="color:#037691" %)**Type Code 0x01**(%%) ===
387
388 For example, if the payload is **0100003C**, the LWL02's Keep Alive interval is set to **0x00003C (60 seconds)**.
389
390
391 === (% style="color:#037691" %)**Type Code 0x04**(%%) ===
392
393 For example, if the payload is **0x04FF**, it **resets** the LWL02.
394
395
396 === (% style="color:#037691" %)**Type Code 0x05**(%%) ===
397
398 * The payload **0x05 00** sets the uplink to LoRaWAN **unconfirmed** mode.
399 * The payload **0x05 01** sets the uplink to LoRaWAN **confirmed** mode
400
401 === (% style="color:#037691" %)**Type Code 0xA6**(%%) ===
402
403 The payload **0xA601** is used to "**clear the counting**." For the LWL02, it resets both the count numbers and the time.
404
405
406 === (% style="color:#037691" %)**Type Code 0xA7**(%%) ===
407
408 * The payload **0xA7 01** is equivalent to **AT+DISALARM=1**.
409 * The payload **0xA7 00** is Equivalent to **AT+DISALARM=0**.
410
411 === (% style="color:#037691" %)**Type Code 0xA8**(%%) ===
412
413 **Downlink Payload Format**: 0xA8 AA BB
414
415 * **0xA8**: Type code
416 * **AA**:
417 ** **1**: Enable ADR
418 ** **0**: Disable ADR (same as the **AT+CADR** command)
419 * **BB**: Set DR (same as **AT+CDATARATE**; only valid after ADR = 0)
420
421 **Example**: 0xA8 00 02: Set ADR = 0 and DR = 2
422
423
424 === (% style="color:#037691" %)**Type Code 0xA9**(%%) ===
425
426 For more information, see [[Alarm Base Timeout>>||anchor="H4.6AlarmBaseonTimeout"]].
427
428
429 == 4.5 Integrate with IoT Platforms ==
430
431
432 The Things Stack can be integrated with many IoT platforms, including ThingsEye and Datacake, for visualizing and analyzing data coming from the LWL02. Most of these IoT platforms also support sending downlinks to the LWL02.
433
434
435 === 4.5.1 Integrate with ThingsEye ===
436
437
438 The Things Stack application supports integration with ThingsEye.io. Once integrated, ThingsEye.io acts as an MQTT client for The Things Stack MQTT broker, allowing it to subscribe to upstream traffic and publish downlink traffic.
439
440
441 ==== 4.5.1.1 Configuring The Things Stack ====
442
443
444 We use The Things Stack Sandbox in this example:
445
446 * In **The Things Stack Sandbox**, go to the **Application **for the LWL02 you added.
447 * Select **MQTT** under **Integrations** in the left menu.
448 * In the **Connection information **section, under **Connection credentials**, The Things Stack displays an auto-generated **username**. You can use it or provide a new one.
449 * Click the **Generate new API key** button to generate a password. You can view it by clicking on the **visibility toggle/eye** icon. The API key works as the password.
450
451 {{info}}
452 The username and  password (API key) you created here are required in the next section.
453 {{/info}}
454
455 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/tts-mqtt-integration.png?rev=1.1||alt="tts-mqtt-integration.png"]]
456
457
458 ==== 4.5.1.2 Configuring ThingsEye.io ====
459
460
461 The ThingsEye.io IoT platform is not open for self-registration at the moment. If you are interested in testing the platform, please send your project information to [[admin@thingseye.io>>mailto:admin@thingseye.io]], and we will create an account for you.
462
463 * Login to your [[ThingsEye.io >>url:https://thingseye.io]]account.
464 * Under the **Integrations center**, click **Integrations**.
465 * Click the **Add integration** button (the button with the **+** symbol)
466
467 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-io-step-1.png?rev=1.2||alt="thingseye-io-step-1.png" height="804" width="1287"]]
468
469
470 On the **Add integration** window, configure the following:
471
472 **Basic settings:**
473
474 * Select **The Things Stack Community** from the **Integration type** list.
475 * Enter a suitable name for your integration in the **Name **text** **box or keep the default name.
476 * Ensure the following options are turned on.
477 ** Enable integration
478 ** Debug mode
479 ** Allow creating devices or assets
480 * Click the **Next** button. you will be navigated to the **Uplink data converter** tab.
481
482 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-io-step-2.png?rev=1.1||alt="thingseye-io-step-2.png" height="825" width="1321"]]
483
484
485 **Uplink data converter:**
486
487 * Click the **Create new** button if it is not selected by default.
488 * Enter a suitable name for the uplink data converter in the **Name **text** **box or keep the default name.
489 * Click the **JavaScript** button.
490 * Paste the uplink decoder function into the text area (first, delete the default code). The demo uplink decoder function can be found [[here>>url:https://raw.githubusercontent.com/ThingsEye-io/te-platform/refs/heads/main/Data%20Converters/The_Things_Network_MQTT_Uplink_Converter.js]].
491 * Click the **Next** button. You will be navigated to the **Downlink data converter **tab.
492
493 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-io-step-3.png?rev=1.1||alt="thingseye-io-step-3.png" height="841" width="1346"]]
494
495
496 **Downlink data converter (this is an optional step):**
497
498 * Click the **Create new** button if it is not selected by default.
499 * Enter a suitable name for the downlink data converter in the **Name **text** **box or keep the default name.
500 * Click the **JavaScript** button.
501 * Paste the downlink decoder function into the text area (first, delete the default code). The demo downlink decoder function can be found [[here>>url:https://raw.githubusercontent.com/ThingsEye-io/te-platform/refs/heads/main/Data%20Converters/The_Things_Network_MQTT_Downlink_Converter.js]].
502 * Click the **Next** button. You will be navigated to the **Connection** tab.
503
504 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-io-step-4.png?rev=1.1||alt="thingseye-io-step-4.png" height="841" width="1346"]]
505
506
507 **Connection:**
508
509 * Choose **Region** from the **Host type**.
510 * Enter the **cluster** of your **The Things Stack** in the **Region** textbox. You can find the cluster in the url (e.g., https:~/~/**eu1**.cloud.thethings.network/...).
511 * Enter the **Username** and **Password** of the MQTT integration in the **Credentials** section. The **username **and **password **can be found on the MQTT integration page of your The Things Stack account (see **4.5.1.1 Configuring The Things Stack**).
512 * Click the **Check connection** button to test the connection. If the connection is successful, you will see the message saying **Connected**.
513
514 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/message-1.png?rev=1.1||alt="message-1.png"]]
515
516
517
518 * Click the **Add** button.
519
520 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-io-step-5.png?rev=1.1||alt="thingseye-io-step-5.png" height="842" width="1348"]]
521
522
523 Your integration has been added to the** Integrations** list and will be displayed on the **Integrations** page. Check whether the status is shown as **Active**. If not, review your configuration settings and correct any errors.
524
525
526 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye.io_integrationsCenter_integrations.png?rev=1.2||alt="thingseye.io_integrationsCenter_integrations.png" height="928" width="1352"]]
527
528
529 ==== 4.5.1.3 Viewing integration details ====
530
531 Click on your integration from the list. The **Integration details** window will appear with the **Details **tab selected. The **Details **tab shows all the settings you have provided for this integration.
532
533
534 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/integration-details.png?rev=1.1||alt="integration-details.png" height="928" width="1352"]]
535
536
537 If you want to edit the settings you have provided, click on the **Toggle edit mode** button. Once you have done click on the **Apply changes **button.
538
539 {{info}}
540 See also [[ThingsEye documentation>>url:https://wiki.thingseye.io/xwiki/bin/view/Main/]].
541 {{/info}}
542
543
544 ==== 4.5.1.4 Viewing events ====
545
546 The **Events **tab displays all the uplink messages from the LWL02.
547
548 * Select **Debug **from the **Event type** dropdown.
549 * Select the** time frame** from the **time window**.
550
551 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/thingseye-events.png?rev=1.1||alt="thingseye-events.png" height="931" width="1357"]]
552
553
554 * To view the **JSON payload** of a message, click on the **three dots (...)** in the **Message** column of the desired message.
555
556 [image coming soon]
557
558
559 ==== 4.5.1.5 Deleting an integration ====
560
561
562 If you want to delete an integration, click the **Delete integration** button on the Integrations page.
563
564
565 ==== 4.5.1.6 Viewing sensor data on a dashboard ====
566
567
568 You can create a dashboard with ThingsEye to visualize the sensor data coming from the LWL02. The following image shows a dashboard created for the LWL02. See **Creating a dashboard** in ThingsEye documentation for more information.
569
570 [[image:Screenshot 2025-01-28 at 20.40.24.png||height="710" width="1344"]]
571
572
573 == 4.5.2 Integrate with Datacake ==
574
575
576 Datacake is a multi-purpose, low-code IoT platform that allows you to integrate sensor data for visualization and analysis. With The Things Stack, you can easily create an integration with Datacake to forward your sensor data to the Datacake IoT platform.
577
578
579 === 4.5.2.1 Prerequisites ===
580
581
582 * The LWL02 device is joined to The Things Stack.
583 * Uplinks from the LWL02 device are being received by The Things Stack.
584 * A Datacake account (a free account is sufficient for this example).
585
586 === 4.5.2.2 Procedure ===
587
588
589 * In the Datacake workspace, on the left navigation, click **Account Settings**.
590 * Then click **API Token**.
591 * In the **API Token** tab, click the **Copy** button to copy the API token. You will need this API token when creating a webhook with The Things Stack.
592
593 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/WebHome/datacake-1.png?rev=1.1||alt="datacake-1.png" height="847" width="1356"]]
594
595
596
597 To configure the Application to forward data to Datacake you will need to add integration. To add the Datacake integration, perform the following steps:
598
599 * In The Things Stack console, on the left navigation,
600 ** First select your **application** (**Applications -> <your application>**)
601 ** Then select **Integrations -> Webhooks**
602 * On the **Webhooks** page, click + **Add Webhook** button.
603
604 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/WebHome/tts-webhook-1.png?rev=1.1||alt="tts-webhook-1.png" height="844" width="1351"]]
605
606
607 * On the **Choose webhook template** page, select **Datacake**.
608
609 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/WebHome/tts-webhook-2.png?rev=1.1||alt="tts-webhook-2.png" height="847" width="1356"]]
610
611
612 * On the Setup webhook for Datacake page,
613 ** **Webhook ID**: provide an unique identifier for this webhook
614 ** **Token**: Paste the **Datacake API Token** when you copied from the Datacake **Account Settings**.
615 * Click on the **Create Datacake webhook** button.
616
617 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/WebHome/tts-webhook-3.png?rev=1.1||alt="tts-webhook-3.png" height="846" width="1354"]]
618
619
620 Now the Webhook is created and displayed on the **Webhooks** page.
621
622
623 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/WebHome/tts-webhook-4.png?rev=1.1||alt="tts-webhook-4.png" height="835" width="1337"]]
624
625
626 * In the Datacake workspace, on the left navigation, click **Devices**.
627 * On the Devices page, click **+Add Device**.
628
629 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/WebHome/datacake-2.png?rev=1.1||alt="datacake-2.png" height="841" width="1346"]]
630
631
632 * On the **Add Device** window, click **LoRaWAN** option.
633 * Click on the **Next** button.
634
635 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/WebHome/datacake-3.png?rev=1.1||alt="datacake-3.png" height="848" width="1358"]]
636
637
638 * On the **Add LoRaWAN Device** window, **STEP 1**, click on **New Product from template** option.
639 * Under **Device Template**, search **lwl02**. Then click on **Dragino LWL02 Water leakage** option.
640 * Click on the **Next** button.
641
642 [[image:lwl02-dk-1.png||height="841" width="1346"]]
643
644
645 * On the **Add LoRaWAN Device** window, **STEP 2**, under **Network Server**, click on **The Things Stack V3** option.
646 * Click on the **Next** button.
647
648 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/WebHome/datacake-5.png?rev=1.1||alt="datacake-5.png" height="847" width="1356"]]
649
650
651 * On the **Add LoRaWAN Device** window, **STEP 3**, under **Add Devices**, click **Manual** tab.
652 * In the **DEVEUI** textbox, enter your LWL02's 8 bytes **DevEUI**.
653 * In the **NAME** textbox, enter a suitable name to identify your LWL02.
654 * Click on the **Next** button.
655
656 [[image:lwl02-dk-2.png||height="848" width="1358"]]
657
658
659 * On the **Add LoRaWAN Device** window, **STEP 4**, select **Individual device plans** tab.
660 * Click **Free** option.
661 * Click on the **Add 1 Device** button.
662
663 [[image:https://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS02%20-%20LoRaWAN%20Door%20Sensor%20User%20Manual/WebHome/datacake-7.png?rev=1.1||alt="datacake-7.png" height="843" width="1350"]]
664
665
666
667
668 * The device is now added to the Datacake workspace and is ready to receive uplinks from the LWL02 via The Things Stack.
669 * In the **DEVICE** column, click **lwl02**.
670
671 [[image:lwl02-dk-3.png||height="846" width="1354"]]
672
673
674 You can see the **pre-built dashboard** from our template, displaying the LWL02's sensor data on various **widgets**.
675
676
677 [[image:lwl02-dk-4.png||height="845" width="1353"]]
678
679
680
681
682 == 4.6 Alarm Based on Timeout ==
683
684
685 (((
686 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.
687
688 (% 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)**
689 )))
690
691 (((
692 You can configure this feature using the following:
693 )))
694
695 (((
696
697 )))
698
699 (((
700 **AT Command Configuration:**
701
702 * (% 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.
703 * (% style="color:red" %)**AT+TTRIG=0,0**(%%) ~-~-> Default value, disables the timeout alarm.
704
705
706 )))
707
708 (((
709 **Downlink Command Configuration:**
710
711 **Command**: 0xA9 AA BB CC
712
713 * **0xA9**: Type Code
714 * **AA**: Status to be monitored
715 * **BB CC**: Timeout
716
717 If you send **0xA9 01 00 1E**, it is equivalent to **AT+TTRIG=1,30**.
718
719 Or, if you send** 0xA9 00 00 00**, it is equivalent to **AT+TTRIG=0,0** (disables the timeout alarm).
720 )))
721
722 (((
723
724 )))
725
726 = 5. Battery =
727
728
729 The LWL02 is equipped with 2 AAA LR03 batteries.
730
731
732 == 5.1 Replacing Batteries ==
733
734
735 (((
736 The LWL02 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.
737
738 **Note:**
739
740 1. The LWL02 doesn’t have any screws; you can use a nail to open it from the middle.
741 1. Make sure the direction is correct when installing the AAA batteries.
742
743 **Important Note: **Ensure you use new AAA LR03 batteries, and that the battery surfaces are not damaged.
744
745
746 Example of AAA LR03 battery:
747 )))
748
749 [[image:1654675278044-307.png]]
750
751
752 == 5.2 Power Consumption Analysis ==
753
754
755 (((
756 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.
757
758
759 )))
760
761 = 6. Use AT Commands =
762
763 == 6.1 Access AT Commands ==
764
765
766 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.
767
768 [[image:image-20221226104917-1.png||height="557" width="850"]]
769
770
771 (((
772 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:
773 )))
774
775 (((
776 The AT command access password is (% style="color:red" %)**123456**.
777 )))
778
779 [[image:1654675618022-630.png]]
780
781
782 (((
783 Each AT command needs to have an **ENTER** key pressed at the end before sending.
784
785 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.
786
787 More details can be found in the [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]].
788 )))
789
790 (((
791 [[url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]]
792 )))
793
794
795 = 7. FAQ =
796
797 == 7.1 How to upgrade the image? ==
798
799
800 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]].
801
802
803 == 7.2 How to change the LoRa Frequency Bands/Region? ==
804
805
806 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.
807
808
809 == 7.3 Can I disable uplinks for each event to save battery life? ==
810
811
812 Yes, you can use one of the method below:
813
814 **Via AT Command**:
815
816 **AT+DISALARM=1** : The end node will only send packets during the TDC time.
817
818 **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.
819
820
821 **Via LoRaWAN downlink Command**:
822
823 **0xA701** : Equivalent to AT+DISALARM=1
824
825 **0xA700** : Equivalent to AT+DISALARM=0
826
827
828 == 7.4 How can I change the Subband for LWL02? ==
829
830
831 **Before v1.6 firmware:**
832 LWL02 operates in Subband 2 by default in the AU915/US915 band. If the LoRaWAN server operates on another subband, LWL02 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:
833
834 1. Press the reset button.
835 1. Send the password **123456**.
836 1. Send the command: **AT+CFREQBANDMASK=0006** (use 0001 for Subband 1, 0002 for Subband 2, etc.).
837 1. Press the reset button to restart and switch to the new subband.
838
839 Example output:
840
841 (% class="mark small" %)[3369]DRAGINO LWL01 Device
842 [3370]Frequency Band: US915 v1.5
843 [3373]OTAA
844 [3374]DevEui= 7896785455246354
845 [3377]class type A
846 [3379]freq mode intra(%%)
847 (% class="mark mark small small" %)[3381]**scan chn mask 0x0002   ~-~-> use subband 2**
848
849 (% class="mark small" %)LM502:~~# [10793]txDone
850 123456       ~-~-> ENTER PASSWORD
851 Correct Password
852
853 (% class="mark small" %)[105115]rxTimeOut
854 **AT+CFREQBANDMASK=0001   ~-~-> Change to Subband1**
855 OK
856
857 (% class="mark small" %)[3371]DRAGINO LWL01 Device
858 [3373]Frequency Band: US915 v1.5
859 [3376]OTAA
860 [3377]DevEui= 7896785455246354
861 [3380]class type A
862 [3382]freq mode intra
863 [3384]**scan chn mask 0x0001  ~-~-> reboot and works on Subband1 now**
864
865
866 **Since firmware v1.6:**
867
868 LWL02 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.
869
870
871 == 7.5 My sensor worked for Helium AU915 before, but now it doesn't work. Why? ==
872
873
874 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.
875
876
877 == 7.6 Why do I see different working temperatures for the device? ==
878
879
880 The working temperature range of the device depends on the battery the user chooses.
881
882 * A standard AAA battery can support a working range of -10°C to 50°C.
883 * 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]]
884
885 = 8. Ordering Information =
886
887
888 **Part Number: (% style="color:blue" %)LWL02-XXX(%%)**
889
890 (% style="color:blue" %)**XXX:**
891
892 * (% style="color:red" %)**EU433**(%%): frequency  bands EU433
893 * (% style="color:red" %)**EU868**(%%): frequency  bands EU868
894 * (% style="color:red" %)**KR920**(%%): frequency  bands KR920
895 * (% style="color:red" %)**CN470**(%%): frequency bands CN470
896 * (% style="color:red" %)**AS923**(%%): frequency  bands AS923
897 * (% style="color:red" %)**AU915**(%%): frequency bands AU915
898 * (% style="color:red" %)**US915**(%%): frequency bands  US915
899 * (% style="color:red" %)**IN865**(%%):  frequency bands  IN865
900
901 = 9. Packaging Information =
902
903
904 **Package Includes**:
905
906 * LWL02 x 1
907
908 = 10. Support =
909
910
911 * 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.
912 * 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]].