Last modified by Mengting Qiu on 2024/05/29 11:20
<
From version < 3.2 >
edited by Xiaoling
on 2022/06/08 14:38
To version < 2.1 >
edited by Xiaoling
on 2022/06/08 14:29
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2 -[[image:1654669760488-506.png||height="510" width="769"]]
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6 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]]
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9 9  
10 -= 1. Introduction =
11 11  
12 -== 1.1 What is LWL02 LoRaWAN Water Leak Sensor ==
13 13  
14 14  
15 -(((
16 -The Dragino LWL02 is a (% style="color:#4f81bd" %)**LoRaWAN Water Sensor**(%%). When there is water between the two metal probes, LWL02 indicates a water leak event and uplink to IoT server via LoRaWAN network.
17 -)))
18 18  
19 -(((
20 -LWL02 is powered by (% style="color:#4f81bd" %)**2 x AAA batteries**(%%) and target for long time use, these two batteries can provide about 16,000 ~~ 70,000 uplink packets, which result in 2 ~~ 10 years battery life. After battery running out, user can easily open the enclosure and replace with 2 common AAA batteries.
21 -)))
14 +1. Introduction
15 +11. What is LWL02 LoRaWAN Water Leak Sensor
22 22  
23 -(((
24 -The LWL02 will send periodically data every day as well as for each water leak event. It also (% style="color:#4f81bd" %)**counts the water leak times**(%%) and (% style="color:#4f81bd" %)**calculate last water leak duration**(%%). User can also disable the uplink for each water leak event, instead, device can count each event and uplink periodically.
25 -)))
17 +The Dragino LWL02 is a LoRaWAN Water Sensor. When there is water between the two metal probes, LWL02 indicates a water leak event and uplink to IoT server via LoRaWAN network.
26 26  
27 -(((
28 -Each LWL02 is (% style="color:#4f81bd" %)**pre-load with a set of unique keys**(%%) for LoRaWAN registration, register these keys to LoRaWAN server and it will auto connect after power on.
29 -)))
30 30  
31 -[[image:image-20220608143744-1.png]]
20 +LWL02 is powered by 2 x AAA batteries and target for long time use, these two batteries can provide about 16,000 ~~ 70,000 uplink packets, which result in 2 ~~ 10 years battery life. After battery running out, user can easily open the enclosure and replace with 2 common AAA batteries.
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33 33  
23 +The LWL02 will send periodically data every day as well as for each water leak event. It also counts the water leak times and calculate last water leak duration. User can also disable the uplink for each water leak event, instead, device can count each event and uplink periodically.
34 34  
35 35  
36 -*
26 +Each LWL02 is pre-load with a set of unique keys for LoRaWAN registration, register these keys to
27 +
28 +LoRaWAN server and it will auto connect after power on. [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image002.png]]
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32 +
33 +*
37 37  *1. Features
38 38  * LoRaWAN Class A v1.0.3
39 39  * Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865/RU864
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45 45  * Remote configure parameters via LoRa Downlink
46 46  * Firmware upgradable via program port
47 47  
48 -*
45 +*
49 49  *1. Applications
50 50  * Smart Buildings & Home Automation
51 51  * Logistics and Supply Chain Management
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54 54  * Smart Cities
55 55  * Smart Factory
56 56  
57 -1.
54 +1.
58 58  11. Dimension
59 59  
60 60  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image003.png]]
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105 105  In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>path:#AT_Command]] to set the keys in the devices.
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107 107  
108 -1.
105 +1.
109 109  11. Example to join LoRaWAN network
110 110  
111 111  Here shows an example for how to join the [[TTN V3 Network>>url:https://eu1.cloud.thethings.network/]]. Below is the network structure, we use [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]] as LoRaWAN gateway here. 
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121 121  * A periodically update at every 10 minutes when in water leak.
122 122  * A message when switch from water leak to none water leak. ([[Alarm event can be disabled>>path:#Alarm]])
123 123  
121 +
124 124  The LG308 is already set to connect to [[TTN V3 network >>url:https://eu1.cloud.thethings.network/]]. What we need to now is only configure the TTN V3:
125 125  
126 126  **Step 1**: Create a device in TTN V3 with the OTAA keys from LWL02.
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192 192  
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194 194  11. Downlink Payload
195 195  
196 196  |**Downlink Control Type**|**Type Code**|**Downlink payload size(bytes)**
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203 203  |[[Set Alarm Timeout>>path:#Alarm_Timeout]]|0xA9|4
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205 205  
204 +
206 206  Example Downlink payload setting in TTN V3:
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208 208  [[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
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258 -1.
257 +1.
259 259  11. Integrate with Datacake
260 260  
261 261  Datacake provides a human friendly interface to show the sensor data, once we have data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:
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324 324  11. LEDs
325 325  
326 326  |**Action**|**LED behavior**
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330 330  |Got a downlink message|**BLUE LED** blinks once
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332 332  
332 +
333 333  1. Battery & How to replace
334 334  11. Battery Type and replace
335 335  
image-20220608143744-1.png
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1 -XWiki.Xiaoling
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