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1	1	(% style="text-align:center" %)
2		-[[image:1654669760488-506.png||height="510" width="769"]]
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4	4
5		-
6	6	**Contents:**
7	7
8	8	{{toc/}}
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13	13
14	14	= 1. Introduction =
15	15
16		-== 1.1 What is LWL02 LoRaWAN Water Leak Sensor ==
	15	+== 1.1 What is LDS02 LoRaWAN Door Sensor ==
17	17
18	18
19	19	(((
20		-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.
21		-)))
	19	+The Dragino LDS02 is a **(% style="color:#037691" %)LoRaWAN Door Sensor**(%%). It detects door open/close status and uplink to IoT server via LoRaWAN network. user can see the door status, open time, open counts in the IoT Server.
22	22
23		-(((
24		-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.
25		-)))
	21	+LDS02 is powered by **(% style="color:#037691" %)2 x AAA batteries**(%%) and target for long time use, these two batteries can provide about 16,000 ~~ 70,000 uplink packets. After battery running out, user can easily open the enclosure and replace with 2 common AAA batteries.
26	26
27		-(((
28		-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.
29		-)))
	23	+The LDS02 will send periodically data every day as well as for each door open/close action. It also **(% style="color:#037691" %)counts the door open times**(%%) and **(% style="color:#037691" %)calculate last door open duration**(%%). User can also disable the uplink for each open/close event, instead, device can count each open event and uplink periodically.
30	30
31		-(((
32		-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.
	25	+LDS02 has the **(% style="color:#037691" %)open alarm feature**(%%), user can set this feature so device will send Alarm if the door has been open for a certain time.
	26	+
	27	+Each LDS02 is **(% style="color:#037691" %)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.
33	33	)))
34	34
35	35	[[image:image-20220608143744-1.png]]
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356	356	|(% style="width:184px" %)Send an uplink message|(% style="width:275px" %)(% style="color:green" %)**GREEN LED**(%%) blinks once
357	357	|(% style="width:184px" %)Got a downlink message|(% style="width:275px" %)(% style="color:blue" %)**BLUE LED**(%%) blinks once
358	358
359		-
360	360	= 5. Battery & How to replace =
361	361
362	362	== 5.1 Battery Type and replace ==
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485	485	* (% style="color:red" %)**CN779**(%%): frequency bands CN779
486	486
487	487
488		-
489	489	= 9. Packing Info =
490	490
491	491	**Package Includes**:
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493	493	* LWL02 x 1
494	494
495	495
496		-
497	497	= 10. Support =
498	498
499	499	* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.