Version 86.1 by Bei Jinggeng on 2025/02/07 14:10
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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 first 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 **Example:**
243
244 [[image:1654672186477-234.png]]
245
246
247 (((
248 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]]
249 )))
250
251
252 == 4.4 Downlink Payload ==
253
254
255 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:505px" %)
256 |=(% 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)**
257 |(% style="width:180px" %)TDC (Transmit Time Interval—Keep Alive Interval)|(% style="width:80px" %)0x01|(% style="width:150px" %)4
258 |(% style="width:180px" %)RESET|(% style="width:80px" %)0x04|(% style="width:224px" %)2
259 |(% style="width:180px" %)[[Set confirmed mode>>||anchor="HTypeCode0x05"]]|(% style="width:80px" %)0x05|(% style="width:150px" %)2
260 |(% style="width:180px" %)[[Clear Counting>>||anchor="HTypeCode0xA6"]]|(% style="width:80px" %)0xA6|(% style="width:150px" %)2
261 |(% style="width:180px" %)[[Enable/Disable Alarm>>||anchor="HTypeCode0xA7"]]|(% style="width:80px" %)0xA7|(% style="width:150px" %)2
262 |(% style="width:180px" %)[[Control ADR/DR>>||anchor="HTypeCode0xA8"]]|(% style="width:80px" %)0xA8|(% style="width:150px" %)3
263 |(% style="width:180px" %)[[Set Alarm Timeout>>||anchor="HTypeCode0xA9"]]|(% style="width:80px" %)0xA9|(% style="width:150px" %)4
264
265 The following image illustrates how to send a downlink payload from The Things Stack.
266
267 [[image:1654673412319-976.png]]
268
269
270 === (% style="color:#037691" %)**Type Code 0x01**(%%) ===
271
272 For example, if the payload is **0100003C**, the LWL02's Keep Alive interval is set to **0x00003C (60 seconds)**.
273
274
275 === (% style="color:#037691" %)**Type Code 0x04**(%%) ===
276
277 For example, if the payload is **0x04FF**, it **resets** the LWL02.
278
279
280 === (% style="color:#037691" %)**Type Code 0x05**(%%) ===
281
282 * The payload **0x05 00** sets the uplink to LoRaWAN **unconfirmed** mode.
283 * The payload **0x05 01** sets the uplink to LoRaWAN **confirmed** mode
284
285 === (% style="color:#037691" %)**Type Code 0xA6**(%%) ===
286
287 The payload **0xA601** is used to "**clear the counting**." For the LWL02, it resets both the count numbers and the time.
288
289
290 === (% style="color:#037691" %)**Type Code 0xA7**(%%) ===
291
292 * The payload **0xA7 01** is equivalent to **AT+DISALARM=1**.
293 * The payload **0xA7 00** is Equivalent to **AT+DISALARM=0**.
294
295 === (% style="color:#037691" %)**Type Code 0xA8**(%%) ===
296
297 **Downlink Payload Format**: 0xA8 AA BB
298
299 * **0xA8**: Type code
300 * **AA**:
301 ** **1**: Enable ADR
302 ** **0**: Disable ADR (same as the **AT+CADR** command)
303 * **BB**: Set DR (same as **AT+CDATARATE**; only valid after ADR = 0)
304
305 **Example**: 0xA8 00 02: Set ADR = 0 and DR = 2
306
307
308 === (% style="color:#037691" %)**Type Code 0xA9**(%%) ===
309
310 For more information, see [[Alarm Base Timeout>>||anchor="H4.6AlarmBaseonTimeout"]].
311
312
313 == 4.5 Integrate with IoT Platforms ==
314
315 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.
316
317 === 4.5.1 Integrate with ThingsEye ===
318
319 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.
320
321 ==== 4.5.1.1 Configuring The Things Stack ====
322
323 We use The Things Stack Sandbox in this example:
324
325 * In **The Things Stack Sandbox**, go to the **Application **for the LWL02 you added.
326 * Select **MQTT** under **Integrations** in the left menu.
327 * 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.
328 * 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.
329
330 {{info}}
331 The username and  password (API key) you created here are required in the next section.
332 {{/info}}
333
334 [[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"]]
335
336
337 ==== 4.5.1.2 Configuring ThingsEye.io ====
338
339 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.
340
341 * Login to your [[ThingsEye.io >>url:https://thingseye.io]]account.
342 * Under the **Integrations center**, click **Integrations**.
343 * Click the **Add integration** button (the button with the **+** symbol)
344
345 [[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"]]
346
347
348 On the **Add integration** window, configure the following:
349
350 **Basic settings:**
351
352 * Select **The Things Stack Community** from the **Integration type** list.
353 * Enter a suitable name for your integration in the **Name **text** **box or keep the default name.
354 * Ensure the following options are turned on.
355 ** Enable integration
356 ** Debug mode
357 ** Allow creating devices or assets
358 * Click the **Next** button. you will be navigated to the **Uplink data converter** tab.
359
360 [[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"]]
361
362
363 **Uplink data converter:**
364
365 * Click the **Create new** button if it is not selected by default.
366 * Enter a suitable name for the uplink data converter in the **Name **text** **box or keep the default name.
367 * Click the **JavaScript** button.
368 * 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]].
369 * Click the **Next** button. You will be navigated to the **Downlink data converter **tab.
370
371 [[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"]]
372
373
374 **Downlink data converter (this is an optional step):**
375
376 * Click the **Create new** button if it is not selected by default.
377 * Enter a suitable name for the downlink data converter in the **Name **text** **box or keep the default name.
378 * Click the **JavaScript** button.
379 * 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]].
380 * Click the **Next** button. You will be navigated to the **Connection** tab.
381
382 [[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"]]
383
384
385 **Connection:**
386
387 * Choose **Region** from the **Host type**.
388 * 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/...).
389 * 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**).
390 * Click the **Check connection** button to test the connection. If the connection is successful, you will see the message saying **Connected**.
391
392 [[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"]]
393
394
395
396 * Click the **Add** button.
397
398 [[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"]]
399
400
401 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.
402
403
404 [[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"]]
405
406
407 ==== 4.5.1.3 Viewing integration details ====
408
409 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.
410
411
412 [[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"]]
413
414
415 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.
416
417 {{info}}
418 See also [[ThingsEye documentation>>url:https://wiki.thingseye.io/xwiki/bin/view/Main/]].
419 {{/info}}
420
421
422 ==== 4.5.1.4 Viewing events ====
423
424 The **Events **tab displays all the uplink messages from the LWL02.
425
426 * Select **Debug **from the **Event type** dropdown.
427 * Select the** time frame** from the **time window**.
428
429 [[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"]]
430
431
432 * To view the **JSON payload** of a message, click on the **three dots (...)** in the **Message** column of the desired message.
433
434 [image coming soon]
435
436
437 ==== 4.5.1.5 Deleting an integration ====
438
439 If you want to delete an integration, click the **Delete integration** button on the Integrations page.
440
441
442 ==== 4.5.1.6 Viewing sensor data on a dashboard ====
443
444 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.
445
446
447
448 [[image:Screenshot 2025-01-28 at 20.40.24.png]]
449
450
451 == 4.5.2 Integrate with Datacake ==
452
453
454 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.
455
456
457 === 4.5.2.1 Prerequisites ===
458
459 * The LDS02 device is joined to The Things Stack.
460 * Uplinks from the LWL02 device are being received by The Things Stack.
461 * A Datacake account (a free account is sufficient for this example).
462
463 === 4.5.2.2 Procedure ===
464
465 * In the Datacake workspace, on the left navigation, click **Account Settings**.
466 * Then click **API Token**.
467 * 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.
468
469 [[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"]]
470
471
472
473 To configure the Application to forward data to Datacake you will need to add integration. To add the Datacake integration, perform the following steps:
474
475 * In The Things Stack console, on the left navigation,
476 ** First select your **application** (**Applications -> <your application>**)
477 ** Then select **Integrations -> Webhooks**
478 * On the **Webhooks** page, click + **Add Webhook** button.
479
480 [[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"]]
481
482
483 * On the **Choose webhook template** page, select **Datacake**.
484
485 [[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"]]
486
487
488 * On the Setup webhook for Datacake page,
489 ** **Webhook ID**: provide an unique identifier for this webhook
490 ** **Token**: Paste the **Datacake API Token** when you copied from the Datacake **Account Settings**.
491 * Click on the **Create Datacake webhook** button.
492
493 [[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"]]
494
495
496 Now the Webhook is created and displayed on the **Webhooks** page.
497
498
499 [[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"]]
500
501
502 * In the Datacake workspace, on the left navigation, click **Devices**.
503 * On the Devices page, click **+Add Device**.
504
505 [[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"]]
506
507
508 * On the **Add Device** window, click **LoRaWAN** option.
509 * Click on the **Next** button.
510
511 [[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"]]
512
513
514 * On the **Add LoRaWAN Device** window, **STEP 1**, click on **New Product from template** option.
515 * Under **Device Template**, search **lwl02**. Then click on **Dragino LWL02 Water leakage** option.
516 * Click on the **Next** button.
517
518 [[image:lwl02-dk-1.png]]
519
520
521 * On the **Add LoRaWAN Device** window, **STEP 2**, under **Network Server**, click on **The Things Stack V3** option.
522 * Click on the **Next** button.
523
524 [[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"]]
525
526
527 * On the **Add LoRaWAN Device** window, **STEP 3**, under **Add Devices**, click **Manual** tab.
528 * In the **DEVEUI** textbox, enter your LWL02's 8 bytes **DevEUI**.
529 * In the **NAME** textbox, enter a suitable name to identify your LWL02.
530 * Click on the **Next** button.
531
532 [[image:lwl02-dk-2.png]]
533
534
535 * On the **Add LoRaWAN Device** window, **STEP 4**, select **Individual device plans** tab.
536 * Click **Free** option.
537 * Click on the **Add 1 Device** button.
538
539 [[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"]]
540
541
542
543
544 * The device is now added to the Datacake workspace and is ready to receive uplinks from the LWL02 via The Things Stack.
545 * In the **DEVICE** column, click **lwl02**.
546
547
548 [[image:lwl02-dk-3.png]]
549
550
551 You can see the **pre-built dashboard** from our template, displaying the LWL02's sensor data on various **widgets**.
552
553
554 [[image:lwl02-dk-4.png]]
555
556
557
558
559 == 4.6 Alarm Based on Timeout ==
560
561
562 (((
563 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.
564
565 (% 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）**
566 )))
567
568 (((
569 You can configure this feature using the following:
570 )))
571
572 (((
573
574 )))
575
576 (((
577 **AT Command Configuration:**
578
579 * (% 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.
580 * (% style="color:red" %)**AT+TTRIG=0,0**(%%) ~-~-> Default value, disables the timeout alarm.
581
582
583 )))
584
585 (((
586 **Downlink Command Configuration:**
587
588 **Command**: 0xA9 AA BB CC
589
590 * **0xA9**: Type Code
591 * **AA**: Status to be monitored
592 * **BB CC**: Timeout
593
594 If you send **0xA9 01 00 1E**, it is equivalent to **AT+TTRIG=1,30**.
595
596 Or, if you send** 0xA9 00 00 00**, it is equivalent to **AT+TTRIG=0,0** (disables the timeout alarm).
597 )))
598
599 (((
600
601 )))
602
603 == 4.7 LED Indicators ==
604
605
606 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:463px" %)
607 |=(% style="width: 186px;background-color:#4F81BD;color:white" %)**Action**|=(% style="width: 277px;background-color:#4F81BD;color:white" %)**LED behavior**
608 |(% 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(%%)**
609 |(% style="width:184px" %)Joined successfully|(% style="width:275px" %)(% style="color:green" %)**GREEN LED **(%%)on for 5s
610 |(% style="width:184px" %)Send an uplink message|(% style="width:275px" %)(% style="color:green" %)**GREEN LED**(%%) blinks once
611 |(% style="width:184px" %)Receive a downlink message|(% style="width:275px" %)(% style="color:blue" %)**BLUE LED**(%%) blinks once
612
613 = 5. Battery =
614
615
616 The LWL02 is equipped with 2 AAA LR03 batteries.
617
618
619 == 5.1 Replacing Batteries ==
620
621
622 (((
623 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.
624
625 **Note:**
626
627 1. The LDS02 doesn’t have any screws; you can use a nail to open it from the middle.
628 1. Make sure the direction is correct when installing the AAA batteries.
629
630 **Important Note: **Ensure you use new AAA LR03 batteries, and that the battery surfaces are not damaged.
631
632
633 Example of AAA LR03 battery:
634 )))
635
636 [[image:1654675278044-307.png]]
637
638
639 == 5.2 Power Consumption Analysis ==
640
641
642 (((
643
644
645 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.
646 )))
647
648 = 6. Use AT Commands =
649
650 == 6.1 Access AT Commands ==
651
652
653 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.
654
655 [[image:image-20221226104917-1.png||height="557" width="850"]]
656
657
658 (((
659 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:
660 )))
661
662 (((
663 The AT command access password is (% style="color:red" %)**123456**.
664 )))
665
666 [[image:1654675618022-630.png]]
667
668
669 (((
670 Each AT command needs to have an **ENTER** key pressed at the end before sending.
671
672 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.
673
674 More details can be found in the [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]].
675 )))
676
677 (((
678 [[url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]]
679 )))
680
681
682 = 7. FAQ =
683
684 == 7.1 How to upgrade the image? ==
685
686
687 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]].
688
689
690 == 7.2 How to change the LoRa Frequency Bands/Region? ==
691
692
693 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.
694
695
696
697 == 7.3 Can I disable uplinks for each event to save battery life? ==
698
699
700 Yes, you can use one of the method below:
701
702
703 **Via AT Command**:
704
705 **AT+DISALARM=1** : The end node will only send packets during the TDC time.
706
707 **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.
708
709
710 **Via LoRaWAN downlink Command**:
711
712 **0xA701** : Equivalent to AT+DISALARM=1
713
714 **0xA700** : Equivalent to AT+DISALARM=0
715
716
717
718 == 7.4 How can I change the Subband for LWL02? ==
719
720
721 **Before v1.6 firmware:**
722 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:
723
724 1. Press the reset button.
725 1. Send the password **123456**.
726 1. Send the command: **AT+CFREQBANDMASK=0006** (use 0001 for Subband 1, 0002 for Subband 2, etc.).
727 1. Press the reset button to restart and switch to the new subband.
728
729 Example output:
730
731 (% class="mark small" %)[3369]DRAGINO LWL01 Device
732 [3370]Frequency Band: US915 v1.5
733 [3373]OTAA
734 [3374]DevEui= 7896785455246354
735 [3377]class type A
736 [3379]freq mode intra(%%)
737 (% class="mark mark small small" %)[3381]**scan chn mask 0x0002   ~-~-> use subband 2**
738
739 (% class="mark small" %)LM502:~~# [10793]txDone
740 123456       ~-~-> ENTER PASSWORD
741 Correct Password
742
743 (% class="mark small" %)[105115]rxTimeOut
744 **AT+CFREQBANDMASK=0001   ~-~-> Change to Subband1**
745 OK
746
747 (% class="mark small" %)[3371]DRAGINO LWL01 Device
748 [3373]Frequency Band: US915 v1.5
749 [3376]OTAA
750 [3377]DevEui= 7896785455246354
751 [3380]class type A
752 [3382]freq mode intra
753 [3384]**scan chn mask 0x0001  ~-~-> reboot and works on Subband1 now**
754
755
756 **Since firmware v1.6:**
757
758 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.
759
760
761
762 == 7.5 My sensor worked for Helium AU915 before, but now it doesn't work. Why? ==
763
764
765
766 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.
767
768
769 == 7.6 Why do I see different working temperatures for the device? ==
770
771
772 The working temperature range of the device depends on the battery the user chooses.
773
774 * A standard AAA battery can support a working range of -10°C to 50°C.
775 * 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]]
776
777 = 8. Ordering Information =
778
779
780 **Part Number: (% style="color:blue" %)LWL02-XXX(%%)**
781
782 (% style="color:blue" %)**XXX:**
783
784 * (% style="color:red" %)**EU433**(%%): frequency  bands EU433
785 * (% style="color:red" %)**EU868**(%%): frequency  bands EU868
786 * (% style="color:red" %)**KR920**(%%): frequency  bands KR920
787 * (% style="color:red" %)**CN470**(%%): frequency bands CN470
788 * (% style="color:red" %)**AS923**(%%): frequency  bands AS923
789 * (% style="color:red" %)**AU915**(%%): frequency bands AU915
790 * (% style="color:red" %)**US915**(%%): frequency bands  US915
791 * (% style="color:red" %)**IN865**(%%):  frequency bands  IN865
792
793 = 9. Packaging Information =
794
795
796 **Package Includes**:
797
798 * LWL02 x 1
799
800 = 10. Support =
801
802
803 * 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.
804 * 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]].
805
806

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