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6		-**Contents:**
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8		-{{toc/}}
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12		-
13		-
14	14	= 1. Introduction =
15	15
16	16	== 1.1 What is LWL02 LoRaWAN Water Leak Sensor ==
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185	185	|=(% style="width: 180px;" %)**Downlink Control Type**|=(% style="width: 80px;" %)**Type Code**|=(% style="width: 150px;" %)**Downlink payload size(bytes)**
186	186	|(% style="width:180px" %)TDC (Transmit Time Interval—Keep Alive Interval)|(% style="width:80px" %)0x01|(% style="width:150px" %)4
187	187	|(% style="width:180px" %)RESET|(% style="width:80px" %)0x04|(% style="width:224px" %)2
188		-|(% style="width:180px" %)[[Set confirmed mode>>||anchor="H"]]|(% style="width:80px" %)0x05|(% style="width:150px" %)2
	184	+|(% style="width:180px" %)[[Set confirmed mode>>path:#code05]]|(% style="width:80px" %)0x05|(% style="width:150px" %)2
189	189	|(% style="width:180px" %)[[Clear Counting>>path:#codeA6]]|(% style="width:80px" %)0xA6|(% style="width:150px" %)2
190	190	|(% style="width:180px" %)[[Enable/Disable Alarm>>path:#code70]]|(% style="width:80px" %)0xA7|(% style="width:150px" %)2
191	191	|(% style="width:180px" %)[[Control ADR/DR>>path:#codeA8]]|(% style="width:80px" %)0xA8|(% style="width:150px" %)3
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194	194	Example Downlink payload setting in TTN V3:
195	195
196		-[[image:1654673412319-976.png]]
	192	+[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image015.png]]
197	197
198	198
199		-=== (% style="color:#037691" %)**Type Code 0x01**(%%) ===
	195	+**Type Code 0x01**
200	200
201	201	If the payload=0100003C, means to control the LWL02’s Keep Alive interval to 0x00003C=60(S)
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203	203
204		-=== (% style="color:#037691" %)**Type Code 0x04**(%%) ===
	200	+**Type Code 0x04**
205	205
206	206	If payload = 0x04FF, it will reset the LWL02.
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208	208
209		-=== (% style="color:#037691" %)**Type Code 0x05**(%%) ===
	205	+**Type Code 0x05**
210	210
211	211	0x05 00: Set uplink to LoRaWAN unconfirmed mode
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213	213	0x05 01: Set uplink to LoRaWAN confirmed mode
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215	215
216		-=== (% style="color:#037691" %)**Type Code 0xA6**(%%) ===
	212	+**Type Code 0xA6**
217	217
218	218	Example: 0xA601: Clear Counting
219	219	For LWL02: reset both count number and time.
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221	221
222		-=== (% style="color:#037691" %)**Type Code 0xA7**(%%) ===
	218	+**Type Code 0xA7**
223	223
224	224	0xA7 01 : Equal to AT+DISALARM=1
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226	226	0xA7 00 : Equal to AT+DISALARM=0
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228	228
229		-=== (% style="color:#037691" %)**Type Code 0xA8**(%%) ===
	225	+**Type Code 0xA8**
230	230
231	231	Format: 0xA8 aa bb
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237	237	Example: 0x A8 00 02 : Set ADR=0 and DR=1
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239	239
240		-=== (% style="color:#037691" %)**Type Code 0xA9**(%%) ===
	236	+**Type Code 0xA9**
241	241
242	242	See [[Alarm Base Timeout>>path:#Alarm_Timeout]] for detail.
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245	245
246		-1.
	242	+1.
247	247	11. Integrate with Datacake
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249	249	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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311		-1.
	307	+1.
312	312	11. LEDs
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314	314	|**Action**|**LED behavior**