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Author

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1		-XWiki.Xiaoling
	1	+XWiki.Edwin

Content

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1	1	(% style="text-align:center" %)
2		-[[image:image-20220523115324-1.jpeg||height="500" width="500"]]
	2	+[[image:image-20220523115324-1.jpeg||height="317" width="317"]]
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5	5	**LHT65N LoRaWAN Temperature & Humidity Sensor Manual**
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17		-= 1.Introduction =
	17	+= 1. Introduction =
18	18
19	19	== 1.1 What is LHT65N Temperature & Humidity Sensor ==
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401	401
402	402	== 2.6 Datalog Feature ==
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404		-This feature is always enabled. When user wants to retrieve the sensor value, he can send a poll command from the IoT platform to ask LHT65N to send the value in the required time slot.
	404	+Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N.
405	405
406		-=== 2.6.1 Unix TimeStamp ===
	406	+=== 2.6.1 Ways to get datalog via LoRaWAN ===
407	407
	408	+There are two methods:
	409	+
	410	+1. IoT Server sends a downlink LoRaWAN command to [[poll the value>>PollSensorValue]].
	411	+1.
	412	+
	413	+=== 2.6.2 Unix TimeStamp ===
	414	+
408	408	LHT65N uses Unix TimeStamp format based on
409	409
410	410	[[image:image-20220523001219-11.png||height="97" width="627"]]
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423	423	So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25
424	424
425		-=== 2.6.2 Set Device Time ===
	432	+=== 2.6.3 Set Device Time ===
426	426
427	427	(((
428	428	There are two ways to set device’s time:
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456	456	User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.
457	457	)))
458	458
459		-=== 2.6.3 Poll sensor value ===
	466	+=== [[2.6.4 Poll sensor value>>2.6.4 Poll sensor value||anchor="PollSensorValue"]] ===
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461	461	User can poll sensor value based on timestamps from the server. Below is the downlink command.
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479	479	)))
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482		-=== 2.6.4 Datalog Uplink payload ===
	489	+=== 2.6.5 Datalog Uplink payload ===
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484	484	The Datalog poll reply uplink will use below payload format.
485	485