Last modified by Xiaoling on 2025/02/07 15:42
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11 **Table of Contents:**
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13 {{toc/}}
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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
84 = 2. Power ON LWL02 =
85
86
87 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.
88
89
90 = 3. How to Install LWL02 =
91
92
93 **Fixing with screws:**
94
95 * 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.
96
97 [[image:image-20231222114059-1.jpeg||height="412" width="624"]]
98
99
100 **Fixing with double-sided adhesive pads:**
101
102 * 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.
103
104 [[image:image-20231222114211-2.jpeg||height="409" width="613"]]
105
106
107 (((
108 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.
109
110
111 )))
112
113 [[image:image-20220608144447-4.png]]
114
115
116 = 4. Operation Mode =
117
118 == 4.1 How It works? ==
119
120
121 (((
122 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.
123
124
125 [[image:image-20230426084834-1.png||height="239" width="515"]]
126
127
128 )))
129
130 (((
131 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.
132 )))
133
134
135 == 4.2 Example to joining a LoRaWAN network ==
136
137
138
139 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.
140
141
142
143 [[image:lwl02-tts.jpg]]
144
145
146 (((
147 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:
148
149 * A keep-alive message, sent once per day.
150 * An emergency event message when a water leak is detected ([[this alarm event can be disabled>>||anchor="H7.3CanIdisableuplinkforeacheventtosavebatterylife3F"]]).
151 * A periodic update every 10 minutes while in a water leak state.
152 * A message when switching from a water leak state to no water leak ([[this alarm event can be disabled>>||anchor="H7.3CanIdisableuplinkforeacheventtosavebatterylife3F"]]).
153
154 === 4.2.1 Setting up ===
155
156 * Sign up for a free account with [[The Things Stack Sandbox>>url:https://eu1.cloud.thethings.network]] if you do not have one yet.
157 * Log in to your **The Things Stack** account.
158 * Create an **application** with The Things Stack if you do not have one yet.
159 ** On the left navigation, click **Applications**.
160 ** Then click **+ Add Application** button.
161
162 [[image:lwl02-4.png]]
163
164 * On the **Create Application **page, configure the following:
165 ** **Application ID**: Provide a unique identification for your application within The Things Stack.
166 ** **Application name**: (optional) Provide a descriptive name.
167 ** **Description**: (optional) Provide a description.
168 * Click on **Create application **button.
169 )))
170
171
172 [[image:lwl02-5.png]]
173
174
175 * Go to the newly created application and click on the **End devices** in the left menu.
176 * On the End devices page, click on **+ Register end device**.
177
178 [[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"]]
179
180
181 * Two registration options are available:
182 ** Using the LoRaWAN Device Repositoty
183 ** Manual registration
184
185 === 4.2.2 Using the LoRaWAN Device Repository ===
186
187 * On the **Register end device** page:
188 ** Select the option **Select the end device in the LoRaWAN Device Repository **under **Input method**.
189 ** Select the **End device brand**, **Model**, **Hardware version**, **Firmware version**, and **Profile (Region)** from the respective dropdown lists.
190 *** **End device brand**: Dragino Technology Co., Limited
191 *** **Model**: LWL02 - Water Leak Sensor
192 *** **Hardware ver**: Unknown
193 *** **Firmware ver**: 1.6
194 *** **Profile (Region)**: Select the region that matches your device.
195 ** Select the **Frequency plan** that matches your device from the **Frequency plan** dropdown list.
196 ** 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.
197
198 [[image:lwl02-1.png]]
199
200
201
202
203 * In the **DevEUI** field, enter the **DevEUI**.
204 * In the **AppKey** field, enter the **AppKey.**
205 * In the **End device ID** field, enter a unique name for your LDS02 within this application.
206 * Under **After registration**, select the **View registered end device** option.
207 * Click **Register end device** button.
208
209 [[image:lwl02-2.png]]
210
211
212
213 * You will be navigated to the Device overview page.
214
215 [[image:lwl02-3.png]]
216
217
218 * 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.
219
220 [[image:1654681465260-713.png]]
221
222
223 == 4.3 Uplink Payload ==
224
225
226 The uplink payload is a total of 10 bytes.
227
228 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)
229 |(% 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**
230 |value|(% style="width:92px" %)Status & BAT|(% style="width:150px" %)(((
231 MOD Always:0x02
232 )))|(% style="width:126px" %)Total_water_leak_events|(% style="width:140px" %)(((
233 Last  water leak duration (unit:min)
234 )))|(% style="width:153px" %)(((
235 Alarm status
236 )))
237
238 === 4.3.1 Battery Info ===
239
240 Check the battery voltage:
241
242 Example 1: 0x0B88&3FFF = 2952mV
243
244 Example 2: 0xD152&3FFF = 4434mV
245
246
247 === 4.3.2 Status ===
248
249 Check the door state:
250
251 **Example**:
252
253 If the payload is: **0B**:  (0000 1011&0100 0000== 0), **DOOR_OPEN_STATUS** is 0（**CLOSE**）
254
255 If the payload is: **D1**: (1101 0001&0100 0000== 1), **DOOR_OPEN_STATUS** is 1（**OPEN**）
256
257
258 === 4.3.3 MOD ===
259
260 Check the working mode (MOD):
261
262 **Example:**
263
264 If the payload is: 02, the MOD is 2.
265
266
267 === 4.3.4 Total_water_leak_events ===
268
269 Get the total number of door open events:
270
271 **Example**:
272
273 If payload is: **00 00 93, **the total is 147 events.
274
275 If payload is: **00 00 00, **the total is 0 events.
276
277
278 === 4.3.5 Last  water leak duration (unit: min) ===
279
280 Get the last door open duration:
281
282 **Example:**
283
284 If the payload is: **00 00 25, **the last door open duration is 37 minutes.
285
286 If payload is: **00 00 01,** the last door open duration is 1 minute.
287
288
289 === 4.3.6 Alarm ===
290
291 Get alarm status.
292
293 **Example:**
294
295 If the payload is: 01:  (0001 & 0001== 1), the alarm status is 1
296
297 If the payload is: 00:  (0000 & 0001== 0), the alarm status is 0
298
299
300
301 **Example:**
302
303 [[image:1654672186477-234.png]]
304
305
306 (((
307 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]]
308 )))
309
310
311 == 4.4 Downlink Payload ==
312
313
314 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:505px" %)
315 |=(% 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)**
316 |(% style="width:180px" %)TDC (Transmit Time Interval—Keep Alive Interval)|(% style="width:80px" %)0x01|(% style="width:150px" %)4
317 |(% style="width:180px" %)RESET|(% style="width:80px" %)0x04|(% style="width:224px" %)2
318 |(% style="width:180px" %)[[Set confirmed mode>>||anchor="HTypeCode0x05"]]|(% style="width:80px" %)0x05|(% style="width:150px" %)2
319 |(% style="width:180px" %)[[Clear Counting>>||anchor="HTypeCode0xA6"]]|(% style="width:80px" %)0xA6|(% style="width:150px" %)2
320 |(% style="width:180px" %)[[Enable/Disable Alarm>>||anchor="HTypeCode0xA7"]]|(% style="width:80px" %)0xA7|(% style="width:150px" %)2
321 |(% style="width:180px" %)[[Control ADR/DR>>||anchor="HTypeCode0xA8"]]|(% style="width:80px" %)0xA8|(% style="width:150px" %)3
322 |(% style="width:180px" %)[[Set Alarm Timeout>>||anchor="HTypeCode0xA9"]]|(% style="width:80px" %)0xA9|(% style="width:150px" %)4
323
324 The following image illustrates how to send a downlink payload from The Things Stack.
325
326 [[image:1654673412319-976.png]]
327
328
329 === (% style="color:#037691" %)**Type Code 0x01**(%%) ===
330
331 For example, if the payload is **0100003C**, the LWL02's Keep Alive interval is set to **0x00003C (60 seconds)**.
332
333
334 === (% style="color:#037691" %)**Type Code 0x04**(%%) ===
335
336 For example, if the payload is **0x04FF**, it **resets** the LWL02.
337
338
339 === (% style="color:#037691" %)**Type Code 0x05**(%%) ===
340
341 * The payload **0x05 00** sets the uplink to LoRaWAN **unconfirmed** mode.
342 * The payload **0x05 01** sets the uplink to LoRaWAN **confirmed** mode
343
344 === (% style="color:#037691" %)**Type Code 0xA6**(%%) ===
345
346 The payload **0xA601** is used to "**clear the counting**." For the LWL02, it resets both the count numbers and the time.
347
348
349 === (% style="color:#037691" %)**Type Code 0xA7**(%%) ===
350
351 * The payload **0xA7 01** is equivalent to **AT+DISALARM=1**.
352 * The payload **0xA7 00** is Equivalent to **AT+DISALARM=0**.
353
354 === (% style="color:#037691" %)**Type Code 0xA8**(%%) ===
355
356 **Downlink Payload Format**: 0xA8 AA BB
357
358 * **0xA8**: Type code
359 * **AA**:
360 ** **1**: Enable ADR
361 ** **0**: Disable ADR (same as the **AT+CADR** command)
362 * **BB**: Set DR (same as **AT+CDATARATE**; only valid after ADR = 0)
363
364 **Example**: 0xA8 00 02: Set ADR = 0 and DR = 2
365
366
367 === (% style="color:#037691" %)**Type Code 0xA9**(%%) ===
368
369 For more information, see [[Alarm Base Timeout>>||anchor="H4.6AlarmBaseonTimeout"]].
370
371
372 == 4.5 Integrate with IoT Platforms ==
373
374
375 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.
376
377
378 === 4.5.1 Integrate with ThingsEye ===
379
380
381 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.
382
383
384 ==== 4.5.1.1 Configuring The Things Stack ====
385
386
387 We use The Things Stack Sandbox in this example:
388
389 * In **The Things Stack Sandbox**, go to the **Application **for the LWL02 you added.
390 * Select **MQTT** under **Integrations** in the left menu.
391 * 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.
392 * 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.
393
394 {{info}}
395 The username and  password (API key) you created here are required in the next section.
396 {{/info}}
397
398 [[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"]]
399
400
401 ==== 4.5.1.2 Configuring ThingsEye.io ====
402
403
404 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.
405
406 * Login to your [[ThingsEye.io >>url:https://thingseye.io]]account.
407 * Under the **Integrations center**, click **Integrations**.
408 * Click the **Add integration** button (the button with the **+** symbol)
409
410 [[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"]]
411
412
413 On the **Add integration** window, configure the following:
414
415 **Basic settings:**
416
417 * Select **The Things Stack Community** from the **Integration type** list.
418 * Enter a suitable name for your integration in the **Name **text** **box or keep the default name.
419 * Ensure the following options are turned on.
420 ** Enable integration
421 ** Debug mode
422 ** Allow creating devices or assets
423 * Click the **Next** button. you will be navigated to the **Uplink data converter** tab.
424
425 [[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"]]
426
427
428 **Uplink data converter:**
429
430 * Click the **Create new** button if it is not selected by default.
431 * Enter a suitable name for the uplink data converter in the **Name **text** **box or keep the default name.
432 * Click the **JavaScript** button.
433 * 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]].
434 * Click the **Next** button. You will be navigated to the **Downlink data converter **tab.
435
436 [[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"]]
437
438
439 **Downlink data converter (this is an optional step):**
440
441 * Click the **Create new** button if it is not selected by default.
442 * Enter a suitable name for the downlink data converter in the **Name **text** **box or keep the default name.
443 * Click the **JavaScript** button.
444 * 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]].
445 * Click the **Next** button. You will be navigated to the **Connection** tab.
446
447 [[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"]]
448
449
450 **Connection:**
451
452 * Choose **Region** from the **Host type**.
453 * 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/...).
454 * 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**).
455 * Click the **Check connection** button to test the connection. If the connection is successful, you will see the message saying **Connected**.
456
457 [[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"]]
458
459
460
461 * Click the **Add** button.
462
463 [[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"]]
464
465
466 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.
467
468
469 [[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"]]
470
471
472 ==== 4.5.1.3 Viewing integration details ====
473
474 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.
475
476
477 [[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"]]
478
479
480 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.
481
482 {{info}}
483 See also [[ThingsEye documentation>>url:https://wiki.thingseye.io/xwiki/bin/view/Main/]].
484 {{/info}}
485
486
487 ==== 4.5.1.4 Viewing events ====
488
489 The **Events **tab displays all the uplink messages from the LWL02.
490
491 * Select **Debug **from the **Event type** dropdown.
492 * Select the** time frame** from the **time window**.
493
494 [[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"]]
495
496
497 * To view the **JSON payload** of a message, click on the **three dots (...)** in the **Message** column of the desired message.
498
499 [image coming soon]
500
501
502 ==== 4.5.1.5 Deleting an integration ====
503
504
505 If you want to delete an integration, click the **Delete integration** button on the Integrations page.
506
507
508 ==== 4.5.1.6 Viewing sensor data on a dashboard ====
509
510
511 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.
512
513 [[image:Screenshot 2025-01-28 at 20.40.24.png||height="710" width="1344"]]
514
515
516 == 4.5.2 Integrate with Datacake ==
517
518
519 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.
520
521
522 === 4.5.2.1 Prerequisites ===
523
524
525 * The LDS02 device is joined to The Things Stack.
526 * Uplinks from the LWL02 device are being received by The Things Stack.
527 * A Datacake account (a free account is sufficient for this example).
528
529 === 4.5.2.2 Procedure ===
530
531
532 * In the Datacake workspace, on the left navigation, click **Account Settings**.
533 * Then click **API Token**.
534 * 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.
535
536 [[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"]]
537
538
539
540 To configure the Application to forward data to Datacake you will need to add integration. To add the Datacake integration, perform the following steps:
541
542 * In The Things Stack console, on the left navigation,
543 ** First select your **application** (**Applications -> <your application>**)
544 ** Then select **Integrations -> Webhooks**
545 * On the **Webhooks** page, click + **Add Webhook** button.
546
547 [[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"]]
548
549
550 * On the **Choose webhook template** page, select **Datacake**.
551
552 [[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"]]
553
554
555 * On the Setup webhook for Datacake page,
556 ** **Webhook ID**: provide an unique identifier for this webhook
557 ** **Token**: Paste the **Datacake API Token** when you copied from the Datacake **Account Settings**.
558 * Click on the **Create Datacake webhook** button.
559
560 [[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"]]
561
562
563 Now the Webhook is created and displayed on the **Webhooks** page.
564
565
566 [[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"]]
567
568
569 * In the Datacake workspace, on the left navigation, click **Devices**.
570 * On the Devices page, click **+Add Device**.
571
572 [[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"]]
573
574
575 * On the **Add Device** window, click **LoRaWAN** option.
576 * Click on the **Next** button.
577
578 [[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"]]
579
580
581 * On the **Add LoRaWAN Device** window, **STEP 1**, click on **New Product from template** option.
582 * Under **Device Template**, search **lwl02**. Then click on **Dragino LWL02 Water leakage** option.
583 * Click on the **Next** button.
584
585 [[image:lwl02-dk-1.png||height="841" width="1346"]]
586
587
588 * On the **Add LoRaWAN Device** window, **STEP 2**, under **Network Server**, click on **The Things Stack V3** option.
589 * Click on the **Next** button.
590
591 [[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"]]
592
593
594 * On the **Add LoRaWAN Device** window, **STEP 3**, under **Add Devices**, click **Manual** tab.
595 * In the **DEVEUI** textbox, enter your LWL02's 8 bytes **DevEUI**.
596 * In the **NAME** textbox, enter a suitable name to identify your LWL02.
597 * Click on the **Next** button.
598
599 [[image:lwl02-dk-2.png||height="848" width="1358"]]
600
601
602 * On the **Add LoRaWAN Device** window, **STEP 4**, select **Individual device plans** tab.
603 * Click **Free** option.
604 * Click on the **Add 1 Device** button.
605
606 [[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"]]
607
608
609
610
611 * The device is now added to the Datacake workspace and is ready to receive uplinks from the LWL02 via The Things Stack.
612 * In the **DEVICE** column, click **lwl02**.
613
614 [[image:lwl02-dk-3.png||height="846" width="1354"]]
615
616
617 You can see the **pre-built dashboard** from our template, displaying the LWL02's sensor data on various **widgets**.
618
619
620 [[image:lwl02-dk-4.png||height="845" width="1353"]]
621
622
623
624
625 == 4.6 Alarm Based on Timeout ==
626
627
628 (((
629 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.
630
631 (% 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)**
632 )))
633
634 (((
635 You can configure this feature using the following:
636 )))
637
638 (((
639
640 )))
641
642 (((
643 **AT Command Configuration:**
644
645 * (% 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.
646 * (% style="color:red" %)**AT+TTRIG=0,0**(%%) ~-~-> Default value, disables the timeout alarm.
647
648
649 )))
650
651 (((
652 **Downlink Command Configuration:**
653
654 **Command**: 0xA9 AA BB CC
655
656 * **0xA9**: Type Code
657 * **AA**: Status to be monitored
658 * **BB CC**: Timeout
659
660 If you send **0xA9 01 00 1E**, it is equivalent to **AT+TTRIG=1,30**.
661
662 Or, if you send** 0xA9 00 00 00**, it is equivalent to **AT+TTRIG=0,0** (disables the timeout alarm).
663 )))
664
665 (((
666
667 )))
668
669 == 4.7 LED Indicators ==
670
671
672 (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:463px" %)
673 |=(% style="width: 186px;background-color:#4F81BD;color:white" %)**Action**|=(% style="width: 277px;background-color:#4F81BD;color:white" %)**LED behavior**
674 |(% 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(%%)**
675 |(% style="width:184px" %)Joined successfully|(% style="width:275px" %)(% style="color:green" %)**GREEN LED **(%%)on for 5s
676 |(% style="width:184px" %)Send an uplink message|(% style="width:275px" %)(% style="color:green" %)**GREEN LED**(%%) blinks once
677 |(% style="width:184px" %)Receive a downlink message|(% style="width:275px" %)(% style="color:blue" %)**BLUE LED**(%%) blinks once
678
679 = 5. Battery =
680
681
682 The LWL02 is equipped with 2 AAA LR03 batteries.
683
684
685 == 5.1 Replacing Batteries ==
686
687
688 (((
689 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.
690
691 **Note:**
692
693 1. The LDS02 doesn’t have any screws; you can use a nail to open it from the middle.
694 1. Make sure the direction is correct when installing the AAA batteries.
695
696 **Important Note: **Ensure you use new AAA LR03 batteries, and that the battery surfaces are not damaged.
697
698
699 Example of AAA LR03 battery:
700 )))
701
702 [[image:1654675278044-307.png]]
703
704
705 == 5.2 Power Consumption Analysis ==
706
707
708 (((
709 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.
710
711
712 )))
713
714 = 6. Use AT Commands =
715
716 == 6.1 Access AT Commands ==
717
718
719 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.
720
721 [[image:image-20221226104917-1.png||height="557" width="850"]]
722
723
724 (((
725 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:
726 )))
727
728 (((
729 The AT command access password is (% style="color:red" %)**123456**.
730 )))
731
732 [[image:1654675618022-630.png]]
733
734
735 (((
736 Each AT command needs to have an **ENTER** key pressed at the end before sending.
737
738 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.
739
740 More details can be found in the [[AT Command Manual>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]].
741 )))
742
743 (((
744 [[url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/]]
745 )))
746
747
748 = 7. FAQ =
749
750 == 7.1 How to upgrade the image? ==
751
752
753 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]].
754
755
756 == 7.2 How to change the LoRa Frequency Bands/Region? ==
757
758
759 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.
760
761
762 == 7.3 Can I disable uplinks for each event to save battery life? ==
763
764
765 Yes, you can use one of the method below:
766
767 **Via AT Command**:
768
769 **AT+DISALARM=1** : The end node will only send packets during the TDC time.
770
771 **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.
772
773
774 **Via LoRaWAN downlink Command**:
775
776 **0xA701** : Equivalent to AT+DISALARM=1
777
778 **0xA700** : Equivalent to AT+DISALARM=0
779
780
781 == 7.4 How can I change the Subband for LWL02? ==
782
783
784 **Before v1.6 firmware:**
785 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:
786
787 1. Press the reset button.
788 1. Send the password **123456**.
789 1. Send the command: **AT+CFREQBANDMASK=0006** (use 0001 for Subband 1, 0002 for Subband 2, etc.).
790 1. Press the reset button to restart and switch to the new subband.
791
792 Example output:
793
794 (% class="mark small" %)[3369]DRAGINO LWL01 Device
795 [3370]Frequency Band: US915 v1.5
796 [3373]OTAA
797 [3374]DevEui= 7896785455246354
798 [3377]class type A
799 [3379]freq mode intra(%%)
800 (% class="mark mark small small" %)[3381]**scan chn mask 0x0002   ~-~-> use subband 2**
801
802 (% class="mark small" %)LM502:~~# [10793]txDone
803 123456       ~-~-> ENTER PASSWORD
804 Correct Password
805
806 (% class="mark small" %)[105115]rxTimeOut
807 **AT+CFREQBANDMASK=0001   ~-~-> Change to Subband1**
808 OK
809
810 (% class="mark small" %)[3371]DRAGINO LWL01 Device
811 [3373]Frequency Band: US915 v1.5
812 [3376]OTAA
813 [3377]DevEui= 7896785455246354
814 [3380]class type A
815 [3382]freq mode intra
816 [3384]**scan chn mask 0x0001  ~-~-> reboot and works on Subband1 now**
817
818
819 **Since firmware v1.6:**
820
821 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.
822
823
824 == 7.5 My sensor worked for Helium AU915 before, but now it doesn't work. Why? ==
825
826
827 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.
828
829
830 == 7.6 Why do I see different working temperatures for the device? ==
831
832
833 The working temperature range of the device depends on the battery the user chooses.
834
835 * A standard AAA battery can support a working range of -10°C to 50°C.
836 * 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]]
837
838 = 8. Ordering Information =
839
840
841 **Part Number: (% style="color:blue" %)LWL02-XXX(%%)**
842
843 (% style="color:blue" %)**XXX:**
844
845 * (% style="color:red" %)**EU433**(%%): frequency  bands EU433
846 * (% style="color:red" %)**EU868**(%%): frequency  bands EU868
847 * (% style="color:red" %)**KR920**(%%): frequency  bands KR920
848 * (% style="color:red" %)**CN470**(%%): frequency bands CN470
849 * (% style="color:red" %)**AS923**(%%): frequency  bands AS923
850 * (% style="color:red" %)**AU915**(%%): frequency bands AU915
851 * (% style="color:red" %)**US915**(%%): frequency bands  US915
852 * (% style="color:red" %)**IN865**(%%):  frequency bands  IN865
853
854 = 9. Packaging Information =
855
856
857 **Package Includes**:
858
859 * LWL02 x 1
860
861 = 10. Support =
862
863
864 * 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.
865 * 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]].

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