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1	1	{{box cssClass="floatinginfobox" title="**Contents**"}}
2	2	{{toc/}}
3	3	{{/box}}
4	4
5		-(% class="wikigeneratedid" %)
6		-= =
	8	+{{toc/}}
7	7
8		-(% class="wikigeneratedid" %)
9	9	= 1.Introduction =
10	10
11		-== 1.1 Overview ==
	12	+== 1.1 What is LHT65N Temperature & Humidity Sensor ==
12	12
13		-[[image:LHT65N_10.png||alt="LHT65_Image" height="265" width="265"]]
14	14
15		-
16	16	The Dragino LHT65N Temperature & Humidity sensor is a Long Range LoRaWAN Sensor. It includes a(% class="mark" %) **built-in Temperature & Humidity sensor**(%%) and has an external sensor connector to connect to an external (% class="mark" %)**Temperature Sensor**(%%)**.**
17	17
18	18	The LHT65N allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.
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25	25
26	26	*The actual battery life depends on how often to send data, please see the battery analyzer chapter.
27	27
	27	+== 1.2 Features ==
28	28
29		-== Features: ==
30		-
31	31	* Wall mountable
32	32	* LoRaWAN v1.0.3 Class A protocol
33	33	* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
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40	40	* Tri-color LED to indicate working status
41	41	* Datalog feature
42	42
43		-== Specification: ==
	41	+== 1.3 Specification ==
44	44
45	45	**Built-in Temperature Sensor:**
46	46
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63	63	* ±2°C accuracy from -55°C to +125°C
64	64	* Operating Range: -55 °C ~~ 125 °C
65	65
66		-= Connect LHT65N to IoT Server =
	64	+= 2. Connect LHT65N to IoT Server =
67	67
68		-== How does LHT65N work? ==
	66	+== 2.1 How does LHT65N work? ==
69	69
70	70	LHT65N is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N is shipped with a worldwide unique set of OTAA keys. To use LHT65N in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N.
71	71
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72	72	If LHT65N is under the coverage of this LoRaWAN network. LHT65N can join the LoRaWAN network automatically. After successfully joining, LHT65N will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.
73	73
74	74
75		-== How to Activate LHT65N? ==
	73	+== 2.2 How to Activate LHT65N? ==
76	76
77	77	The LHT65N has two working modes:
78	78
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83	83
84	84	[[image:image-20220515123819-1.png||height="379" width="317"]]
85	85
	84	+(% border="1" %)
86	86	|**Behavior on ACT**|**Function**|**Action**
87	87	|**Pressing ACT between 1s < time < 3s**|Test uplink status|If LHT65N is already Joined to the LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has an external sensor connected, blue led will blink once. If LHT65N has no external sensor, red led will blink once.
88	88	|**Pressing ACT for more than 3s**|Active Device|green led will fast blink 5 times, LHT65N will enter working mode and start to JOIN LoRaWAN network. green led will solid turn on for 5 seconds after join in network.
89	89	|**Fast press ACT 5 times**|Deactivate Device|red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
90	90
91		-== Example to join LoRaWAN network ==
	90	+== 2.3 Example to join LoRaWAN network ==
92	92
93	93	(% class="wikigeneratedid" %)
94	94	This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.
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99	99	Assume the LPS8N is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N. Next we need to add the LHT65N device in TTN V3:
100	100
101	101
102		-=== **Step 1**: Create Device n TTN ===
	101	+=== **2.3.1 Step 1**: Create Device n TTN ===
103	103
104	104	Create a device in TTN V3 with the OTAA keys from LHT65N.
105	105
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129	129	[[image:image-20220522233118-7.png]]
130	130
131	131
132		-=== Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
	131	+=== 2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. ===
133	133
134	134	Use ACT button to activate LHT65N and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.
135	135
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266	266	[[Time Stamp>>path:#Unix_Time_Stamp]]
267	267	)))
268	268
269		-* **Battery status & **[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
	268	+* **Battery status & **[[(% class="wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink wikiinternallink" %)**Built-in Humidity**>>path:#SHT20_Humidity]]
270	270
271	271	(% style="width:587px" %)
272	272	|Bit(bit)|(% style="width:280px" %)[15:14]|(% style="width:136px" %)[11:0]
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649	649	* 0xA800     à AT+PID=0
650	650	* 0xA801     à AT+PID=1
651	651
652		-
653	653	== Set Password ==
654	654
655	655	Feature: Set device password, max 9 digits
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702	702
703	703	* There is no downlink command to set to Sleep mode.
704	704
705		-
706	706	== Set system time ==
707	707
708	708	Feature: Set system time, unix format. [[See here for format detail.>>path:#TimeStamp]]
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866	866	* Example: 0xA301 ~/~/Same as AT+CLRDTA
867	867
868	868
869		-
870	870	= Battery & How to replace =
871	871
872	872	== Battery Type ==

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