Version 87.1 by Bei Jinggeng on 2025/02/07 14:16
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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 == 1.2 Features ==
41
42
43 * **LoRaWAN Class A v1.0.3**
44 * **Frequency Bands:** CN470, EU433, KR920, US915, EU868, AS923, AU915, IN865, RU864
45 * **SX1262 LoRa Core**
46 * **Water Leak Detection**
47 * **2 x AAA LR03 Batteries**
48 * **AT Commands** to change parameters
49 * **Periodic Uplink** and uplink triggered by open/close actions
50 * **Remote Configuration** of parameters via LoRa Downlink
51 * **Firmware Upgradable** via programming port
52
53 == 1.3 Storage & Operation Temperature ==
54
55
56 -10 ~~ 50 °C  or -40 ~~ 60 °C (depending on the battery type; see [[FAQ>>||anchor="H7.6Whyiseedifferentworkingtemperatureforthedevice3F"]])
57
58
59 == 1.4 Applications ==
60
61
62 * Smart Buildings & Home Automation
63 * Logistics and Supply Chain Management
64 * Smart Metering
65 * Smart Agriculture
66 * Smart Cities
67 * Smart Factory
68
69 == 1.5 Dimensions ==
70
71
72 [[image:image-20220608143952-2.png]]
73
74
75 [[image:1654670405145-346.png]]
76
77
78 == 1.6 Firmware Change log ==
79
80
81 (((
82 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]]
83 )))
84
85
86 = 2. Power ON LWL02 =
87
88
89 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.
90
91
92 = 3. How to Install LWL02 =
93
94
95 **Fixing with screws:**
96
97 * 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.
98
99 [[image:image-20231222114059-1.jpeg||height="412" width="624"]]
100
101
102 **Fixing with double-sided adhesive pads:**
103
104 * 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.
105
106 [[image:image-20231222114211-2.jpeg||height="409" width="613"]]
107
108
109 (((
110 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.
111
112
113 )))
114
115 [[image:image-20220608144447-4.png]]
116
117
118 = 4. Operation Mode =
119
120 == 4.1 How It works? ==
121
122
123 (((
124 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.
125
126
127 [[image:image-20230426084834-1.png||height="239" width="515"]]
128
129
130 )))
131
132 (((
133 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.
134 )))
135
136
137 == 4.2 Example to joining a LoRaWAN network ==
138
139
140
141 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.
142
143
144
145 [[image:lwl02-tts.jpg]]
146
147
148 (((
149 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:
150
151 * A keep-alive message, sent once per day.
152 * An emergency event message when a water leak is detected ([[this alarm event can be disabled>>||anchor="H7.3CanIdisableuplinkforeacheventtosavebatterylife3F"]]).
153 * A periodic update every 10 minutes while in a water leak state.
154 * A message when switching from a water leak state to no water leak ([[this alarm event can be disabled>>||anchor="H7.3CanIdisableuplinkforeacheventtosavebatterylife3F"]]).
155
156 === 4.2.1 Setting up ===
157
158 * Sign up for a free account with [[The Things Stack Sandbox>>url:https://eu1.cloud.thethings.network]] if you do not have one yet.
159 * Log in to your **The Things Stack** account.
160 * Create an **application** with The Things Stack if you do not have one yet.
161 ** On the left navigation, click **Applications**.
162 ** Then click **+ Add Application** button.
163
164 [[image:lwl02-4.png]]
165
166 * On the **Create Application **page, configure the following:
167 ** **Application ID**: Provide a unique identification for your application within The Things Stack.
168 ** **Application name**: (optional) Provide a descriptive name.
169 ** **Description**: (optional) Provide a description.
170 * Click on **Create application **button.
171 )))
172
173
174 [[image:lwl02-5.png]]
175
176
177 * Go to the newly created application and click on the **End devices** in the left menu.
178 * On the End devices page, click on **+ Register end device**.
179
180 [[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"]]
181
182
183 * Two registration options are available:
184 ** Using the LoRaWAN Device Repositoty
185 ** Manual registration
186
187 === 4.2.2 Using the LoRaWAN Device Repository ===
188
189 * On the **Register end device** page:
190 ** Select the option **Select the end device in the LoRaWAN Device Repository **under **Input method**.
191 ** Select the **End device brand**, **Model**, **Hardware version**, **Firmware version**, and **Profile (Region)** from the respective dropdown lists.
192 *** **End device brand**: Dragino Technology Co., Limited
193 *** **Model**: LWL02 - Water Leak Sensor
194 *** **Hardware ver**: Unknown
195 *** **Firmware ver**: 1.6
196 *** **Profile (Region)**: Select the region that matches your device.
197 ** Select the **Frequency plan** that matches your device from the **Frequency plan** dropdown list.
198 ** 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.
199
200 [[image:lwl02-1.png]]
201
202
203
204
205 * In the **DevEUI** field, enter the **DevEUI**.
206 * In the **AppKey** field, enter the **AppKey.**
207 * In the **End device ID** field, enter a unique name for your LDS02 within this application.
208 * Under **After registration**, select the **View registered end device** option.
209 * Click **Register end device** button.
210
211 [[image:lwl02-2.png]]
212
213
214
215 * You will be navigated to the Device overview page.
216
217 [[image:lwl02-3.png]]
218
219
220 * 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.
221
222 [[image:1654681465260-713.png]]
223
224
225 == 4.3 Uplink Payload ==
226
227
228 The uplink payload is a total of 10 bytes.
229
230 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:732px" %)
231 |(% style="background-color:#4f81bd; color:white; width:60px" %)**Size(bytes)**|(% style="background-color:#4f81bd; color:white; width:226px" %)**2**|(% style="background-color:#4f81bd; color:white; width:10px" %)**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**
232 |value|(% style="width:226px" %)Status（The second bit of the byte[0]）
233 &BAT|(% style="width:10px" %)(((
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
240 )))
241
242 === 4.3.1 Battery Info ===
243
244 Check the battery voltage:
245
246 Example 1: 0x0B88&3FFF = 2952mV
247
248 Example 2: 0xD152&3FFF = 4434mV
249
250 === ===
251
252 === 4.3.2 Status ===
253
254 Check the door state:
255
256 **Example**:
257
258 If the payload is: **0B**:  (0000 1011&0100 0000== 0), **DOOR_OPEN_STATUS** is 0（**CLOSE**）
259
260 If the payload is: **D1**: (1101 0001&0100 0000== 1), **DOOR_OPEN_STATUS** is 1（**OPEN**）
261
262 === ===
263
264 === 4.3.3 MOD ===
265
266 Check the working mode (MOD):
267
268 **Example:**
269
270 If the payload is: 02, the MOD is 2.
271
272 === ===
273
274 === 4.3.4 Total_water_leak_events ===
275
276 Get the total number of door open events:
277
278 **Example**:
279
280 If payload is: **00 00 93, **the total is 147 events.
281
282 If payload is: **00 00 00, **the total is 0 events.
283
284 === ===
285
286 === 4.3.5 Last  water leak duration (unit: min) ===
287
288 Get the last door open duration:
289
290 **Example:**
291
292 If the payload is: **00 00 25, **the last door open duration is 37 minutes.
293
294 If payload is: **00 00 01,** the last door open duration is 1 minute.
295
296 === ===
297
298 === 4.3.6 Alarm ===
299
300 Get alarm status.
301
302 **Example:**
303
304 If the payload is: 01:  (0001 & 0001== 1), the alarm status is 1
305
306 If the payload is: 00:  (0000 & 0001== 0), the alarm status is 0
307
308
309
310 **Example:**
311
312 [[image:1654672186477-234.png]]
313
314
315 (((
316 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]]
317 )))
318
319
320 == 4.4 Downlink Payload ==
321
322
323 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:505px" %)
324 |=(% 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)**
325 |(% style="width:180px" %)TDC (Transmit Time Interval—Keep Alive Interval)|(% style="width:80px" %)0x01|(% style="width:150px" %)4
326 |(% style="width:180px" %)RESET|(% style="width:80px" %)0x04|(% style="width:224px" %)2
327 |(% style="width:180px" %)[[Set confirmed mode>>||anchor="HTypeCode0x05"]]|(% style="width:80px" %)0x05|(% style="width:150px" %)2
328 |(% style="width:180px" %)[[Clear Counting>>||anchor="HTypeCode0xA6"]]|(% style="width:80px" %)0xA6|(% style="width:150px" %)2
329 |(% style="width:180px" %)[[Enable/Disable Alarm>>||anchor="HTypeCode0xA7"]]|(% style="width:80px" %)0xA7|(% style="width:150px" %)2
330 |(% style="width:180px" %)[[Control ADR/DR>>||anchor="HTypeCode0xA8"]]|(% style="width:80px" %)0xA8|(% style="width:150px" %)3
331 |(% style="width:180px" %)[[Set Alarm Timeout>>||anchor="HTypeCode0xA9"]]|(% style="width:80px" %)0xA9|(% style="width:150px" %)4
332
333 The following image illustrates how to send a downlink payload from The Things Stack.
334
335 [[image:1654673412319-976.png]]
336
337
338 === (% style="color:#037691" %)**Type Code 0x01**(%%) ===
339
340 For example, if the payload is **0100003C**, the LWL02's Keep Alive interval is set to **0x00003C (60 seconds)**.
341
342
343 === (% style="color:#037691" %)**Type Code 0x04**(%%) ===
344
345 For example, if the payload is **0x04FF**, it **resets** the LWL02.
346
347
348 === (% style="color:#037691" %)**Type Code 0x05**(%%) ===
349
350 * The payload **0x05 00** sets the uplink to LoRaWAN **unconfirmed** mode.
351 * The payload **0x05 01** sets the uplink to LoRaWAN **confirmed** mode
352
353 === (% style="color:#037691" %)**Type Code 0xA6**(%%) ===
354
355 The payload **0xA601** is used to "**clear the counting**." For the LWL02, it resets both the count numbers and the time.
356
357
358 === (% style="color:#037691" %)**Type Code 0xA7**(%%) ===
359
360 * The payload **0xA7 01** is equivalent to **AT+DISALARM=1**.
361 * The payload **0xA7 00** is Equivalent to **AT+DISALARM=0**.
362
363 === (% style="color:#037691" %)**Type Code 0xA8**(%%) ===
364
365 **Downlink Payload Format**: 0xA8 AA BB
366
367 * **0xA8**: Type code
368 * **AA**:
369 ** **1**: Enable ADR
370 ** **0**: Disable ADR (same as the **AT+CADR** command)
371 * **BB**: Set DR (same as **AT+CDATARATE**; only valid after ADR = 0)
372
373 **Example**: 0xA8 00 02: Set ADR = 0 and DR = 2
374
375
376 === (% style="color:#037691" %)**Type Code 0xA9**(%%) ===
377
378 For more information, see [[Alarm Base Timeout>>||anchor="H4.6AlarmBaseonTimeout"]].
379
380
381 == 4.5 Integrate with IoT Platforms ==
382
383 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.
384
385 === 4.5.1 Integrate with ThingsEye ===
386
387 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.
388
389 ==== 4.5.1.1 Configuring The Things Stack ====
390
391 We use The Things Stack Sandbox in this example:
392
393 * In **The Things Stack Sandbox**, go to the **Application **for the LWL02 you added.
394 * Select **MQTT** under **Integrations** in the left menu.
395 * 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.
396 * 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.
397
398 {{info}}
399 The username and  password (API key) you created here are required in the next section.
400 {{/info}}
401
402 [[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"]]
403
404
405 ==== 4.5.1.2 Configuring ThingsEye.io ====
406
407 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.
408
409 * Login to your [[ThingsEye.io >>url:https://thingseye.io]]account.
410 * Under the **Integrations center**, click **Integrations**.
411 * Click the **Add integration** button (the button with the **+** symbol)
412
413 [[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"]]
414
415
416 On the **Add integration** window, configure the following:
417
418 **Basic settings:**
419
420 * Select **The Things Stack Community** from the **Integration type** list.
421 * Enter a suitable name for your integration in the **Name **text** **box or keep the default name.
422 * Ensure the following options are turned on.
423 ** Enable integration
424 ** Debug mode
425 ** Allow creating devices or assets
426 * Click the **Next** button. you will be navigated to the **Uplink data converter** tab.
427
428 [[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"]]
429
430
431 **Uplink data converter:**
432
433 * Click the **Create new** button if it is not selected by default.
434 * Enter a suitable name for the uplink data converter in the **Name **text** **box or keep the default name.
435 * Click the **JavaScript** button.
436 * 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]].
437 * Click the **Next** button. You will be navigated to the **Downlink data converter **tab.
438
439 [[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"]]
440
441
442 **Downlink data converter (this is an optional step):**
443
444 * Click the **Create new** button if it is not selected by default.
445 * Enter a suitable name for the downlink data converter in the **Name **text** **box or keep the default name.
446 * Click the **JavaScript** button.
447 * 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]].
448 * Click the **Next** button. You will be navigated to the **Connection** tab.
449
450 [[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"]]
451
452
453 **Connection:**
454
455 * Choose **Region** from the **Host type**.
456 * 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/...).
457 * 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**).
458 * Click the **Check connection** button to test the connection. If the connection is successful, you will see the message saying **Connected**.
459
460 [[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"]]
461
462
463
464 * Click the **Add** button.
465
466 [[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"]]
467
468
469 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.
470
471
472 [[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"]]
473
474
475 ==== 4.5.1.3 Viewing integration details ====
476
477 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.
478
479
480 [[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"]]
481
482
483 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.
484
485 {{info}}
486 See also [[ThingsEye documentation>>url:https://wiki.thingseye.io/xwiki/bin/view/Main/]].
487 {{/info}}
488
489
490 ==== 4.5.1.4 Viewing events ====
491
492 The **Events **tab displays all the uplink messages from the LWL02.
493
494 * Select **Debug **from the **Event type** dropdown.
495 * Select the** time frame** from the **time window**.
496
497 [[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"]]
498
499
500 * To view the **JSON payload** of a message, click on the **three dots (...)** in the **Message** column of the desired message.
501
502 [image coming soon]
503
504
505 ==== 4.5.1.5 Deleting an integration ====
506
507 If you want to delete an integration, click the **Delete integration** button on the Integrations page.
508
509
510 ==== 4.5.1.6 Viewing sensor data on a dashboard ====
511
512 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.
513
514
515
516 [[image:Screenshot 2025-01-28 at 20.40.24.png]]
517
518
519 == 4.5.2 Integrate with Datacake ==
520
521
522 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.
523
524
525 === 4.5.2.1 Prerequisites ===
526
527 * The LDS02 device is joined to The Things Stack.
528 * Uplinks from the LWL02 device are being received by The Things Stack.
529 * A Datacake account (a free account is sufficient for this example).
530
531 === 4.5.2.2 Procedure ===
532
533 * In the Datacake workspace, on the left navigation, click **Account Settings**.
534 * Then click **API Token**.
535 * 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.
536
537 [[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"]]
538
539
540
541 To configure the Application to forward data to Datacake you will need to add integration. To add the Datacake integration, perform the following steps:
542
543 * In The Things Stack console, on the left navigation,
544 ** First select your **application** (**Applications -> <your application>**)
545 ** Then select **Integrations -> Webhooks**
546 * On the **Webhooks** page, click + **Add Webhook** button.
547
548 [[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"]]
549
550
551 * On the **Choose webhook template** page, select **Datacake**.
552
553 [[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"]]
554
555
556 * On the Setup webhook for Datacake page,
557 ** **Webhook ID**: provide an unique identifier for this webhook
558 ** **Token**: Paste the **Datacake API Token** when you copied from the Datacake **Account Settings**.
559 * Click on the **Create Datacake webhook** button.
560
561 [[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"]]
562
563
564 Now the Webhook is created and displayed on the **Webhooks** page.
565
566
567 [[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"]]
568
569
570 * In the Datacake workspace, on the left navigation, click **Devices**.
571 * On the Devices page, click **+Add Device**.
572
573 [[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"]]
574
575
576 * On the **Add Device** window, click **LoRaWAN** option.
577 * Click on the **Next** button.
578
579 [[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"]]
580
581
582 * On the **Add LoRaWAN Device** window, **STEP 1**, click on **New Product from template** option.
583 * Under **Device Template**, search **lwl02**. Then click on **Dragino LWL02 Water leakage** option.
584 * Click on the **Next** button.
585
586 [[image:lwl02-dk-1.png]]
587
588
589 * On the **Add LoRaWAN Device** window, **STEP 2**, under **Network Server**, click on **The Things Stack V3** option.
590 * Click on the **Next** button.
591
592 [[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"]]
593
594
595 * On the **Add LoRaWAN Device** window, **STEP 3**, under **Add Devices**, click **Manual** tab.
596 * In the **DEVEUI** textbox, enter your LWL02's 8 bytes **DevEUI**.
597 * In the **NAME** textbox, enter a suitable name to identify your LWL02.
598 * Click on the **Next** button.
599
600 [[image:lwl02-dk-2.png]]
601
602
603 * On the **Add LoRaWAN Device** window, **STEP 4**, select **Individual device plans** tab.
604 * Click **Free** option.
605 * Click on the **Add 1 Device** button.
606
607 [[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"]]
608
609
610
611
612 * The device is now added to the Datacake workspace and is ready to receive uplinks from the LWL02 via The Things Stack.
613 * In the **DEVICE** column, click **lwl02**.
614
615 [[image:lwl02-dk-3.png]]
616
617
618 You can see the **pre-built dashboard** from our template, displaying the LWL02's sensor data on various **widgets**.
619
620
621 [[image:lwl02-dk-4.png]]
622
623
624
625
626 == 4.6 Alarm Based on Timeout ==
627
628
629 (((
630 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.
631
632 (% 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）**
633 )))
634
635 (((
636 You can configure this feature using the following:
637 )))
638
639 (((
640
641 )))
642
643 (((
644 **AT Command Configuration:**
645
646 * (% 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.
647 * (% style="color:red" %)**AT+TTRIG=0,0**(%%) ~-~-> Default value, disables the timeout alarm.
648
649
650 )))
651
652 (((
653 **Downlink Command Configuration:**
654
655 **Command**: 0xA9 AA BB CC
656
657 * **0xA9**: Type Code
658 * **AA**: Status to be monitored
659 * **BB CC**: Timeout
660
661 If you send **0xA9 01 00 1E**, it is equivalent to **AT+TTRIG=1,30**.
662
663 Or, if you send** 0xA9 00 00 00**, it is equivalent to **AT+TTRIG=0,0** (disables the timeout alarm).
664 )))
665
666 (((
667
668 )))
669
670 == 4.7 LED Indicators ==
671
672
673 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:463px" %)
674 |=(% style="width: 186px;background-color:#4F81BD;color:white" %)**Action**|=(% style="width: 277px;background-color:#4F81BD;color:white" %)**LED behavior**
675 |(% 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(%%)**
676 |(% style="width:184px" %)Joined successfully|(% style="width:275px" %)(% style="color:green" %)**GREEN LED **(%%)on for 5s
677 |(% style="width:184px" %)Send an uplink message|(% style="width:275px" %)(% style="color:green" %)**GREEN LED**(%%) blinks once
678 |(% style="width:184px" %)Receive a downlink message|(% style="width:275px" %)(% style="color:blue" %)**BLUE LED**(%%) blinks once
679
680 = 5. Battery =
681
682
683 The LWL02 is equipped with 2 AAA LR03 batteries.
684
685
686 == 5.1 Replacing Batteries ==
687
688
689 (((
690 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.
691
692 **Note:**
693
694 1. The LDS02 doesn’t have any screws; you can use a nail to open it from the middle.
695 1. Make sure the direction is correct when installing the AAA batteries.
696
697 **Important Note: **Ensure you use new AAA LR03 batteries, and that the battery surfaces are not damaged.
698
699
700 Example of AAA LR03 battery:
701 )))
702
703 [[image:1654675278044-307.png]]
704
705
706 == 5.2 Power Consumption Analysis ==
707
708
709 (((
710
711
712 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.
713 )))
714
715 = 6. Use AT Commands =
716
717 == 6.1 Access AT Commands ==
718
719
720 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.
721
722 [[image:image-20221226104917-1.png||height="557" width="850"]]
723
724
725 (((
726 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:
727 )))
728
729 (((
730 The AT command access password is (% style="color:red" %)**123456**.
731 )))
732
733 [[image:1654675618022-630.png]]
734
735
736 (((
737 Each AT command needs to have an **ENTER** key pressed at the end before sending.
738
739 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.
740
741 More details can be found in the [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]].
742 )))
743
744 (((
745 [[url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]]
746 )))
747
748
749 = 7. FAQ =
750
751 == 7.1 How to upgrade the image? ==
752
753
754 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]].
755
756
757 == 7.2 How to change the LoRa Frequency Bands/Region? ==
758
759
760 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.
761
762
763
764 == 7.3 Can I disable uplinks for each event to save battery life? ==
765
766
767 Yes, you can use one of the method below:
768
769
770 **Via AT Command**:
771
772 **AT+DISALARM=1** : The end node will only send packets during the TDC time.
773
774 **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.
775
776
777 **Via LoRaWAN downlink Command**:
778
779 **0xA701** : Equivalent to AT+DISALARM=1
780
781 **0xA700** : Equivalent to AT+DISALARM=0
782
783
784
785 == 7.4 How can I change the Subband for LWL02? ==
786
787
788 **Before v1.6 firmware:**
789 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:
790
791 1. Press the reset button.
792 1. Send the password **123456**.
793 1. Send the command: **AT+CFREQBANDMASK=0006** (use 0001 for Subband 1, 0002 for Subband 2, etc.).
794 1. Press the reset button to restart and switch to the new subband.
795
796 Example output:
797
798 (% class="mark small" %)[3369]DRAGINO LWL01 Device
799 [3370]Frequency Band: US915 v1.5
800 [3373]OTAA
801 [3374]DevEui= 7896785455246354
802 [3377]class type A
803 [3379]freq mode intra(%%)
804 (% class="mark mark small small" %)[3381]**scan chn mask 0x0002   ~-~-> use subband 2**
805
806 (% class="mark small" %)LM502:~~# [10793]txDone
807 123456       ~-~-> ENTER PASSWORD
808 Correct Password
809
810 (% class="mark small" %)[105115]rxTimeOut
811 **AT+CFREQBANDMASK=0001   ~-~-> Change to Subband1**
812 OK
813
814 (% class="mark small" %)[3371]DRAGINO LWL01 Device
815 [3373]Frequency Band: US915 v1.5
816 [3376]OTAA
817 [3377]DevEui= 7896785455246354
818 [3380]class type A
819 [3382]freq mode intra
820 [3384]**scan chn mask 0x0001  ~-~-> reboot and works on Subband1 now**
821
822
823 **Since firmware v1.6:**
824
825 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.
826
827
828
829 == 7.5 My sensor worked for Helium AU915 before, but now it doesn't work. Why? ==
830
831
832
833 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.
834
835
836 == 7.6 Why do I see different working temperatures for the device? ==
837
838
839 The working temperature range of the device depends on the battery the user chooses.
840
841 * A standard AAA battery can support a working range of -10°C to 50°C.
842 * 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]]
843
844 = 8. Ordering Information =
845
846
847 **Part Number: (% style="color:blue" %)LWL02-XXX(%%)**
848
849 (% style="color:blue" %)**XXX:**
850
851 * (% style="color:red" %)**EU433**(%%): frequency  bands EU433
852 * (% style="color:red" %)**EU868**(%%): frequency  bands EU868
853 * (% style="color:red" %)**KR920**(%%): frequency  bands KR920
854 * (% style="color:red" %)**CN470**(%%): frequency bands CN470
855 * (% style="color:red" %)**AS923**(%%): frequency  bands AS923
856 * (% style="color:red" %)**AU915**(%%): frequency bands AU915
857 * (% style="color:red" %)**US915**(%%): frequency bands  US915
858 * (% style="color:red" %)**IN865**(%%):  frequency bands  IN865
859
860 = 9. Packaging Information =
861
862
863 **Package Includes**:
864
865 * LWL02 x 1
866
867 = 10. Support =
868
869
870 * 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.
871 * 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]].
872
873

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