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27	27	* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
28	28	* AT Commands to change parameters
29	29	* Remote configure parameters via LoRaWAN Downlink
30		-* Firmware upgradeable via program port
	30	+* Firmware upgradable via program port
31	31	* Built-in 2400mAh battery for up to 10 years of use.
32	32	* Built-in Temperature & Humidity sensor
33	33	* Optional External Sensors
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58	58	* Operating Range: -55 °C ~~ 125 °C
59	59
60	60
61		-= Connect LHT65N to IoT Server =
62		-
63		-== How does LHT65N work? ==
64		-
65		-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.
66		-
67		-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.
68		-
69		-
70		-== How to Activate LHT65N? ==
71		-
72		-The LHT65N has two working modes:
73		-
74		-* **Deep Sleep Mode**: LHT65N doesn’t have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.
75		-* **Working Mode**: In this mode, LHT65N works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65 will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode.
76		-
77		-
78		-The LHT65N is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:
79		-
80		-[[image:image-20220515123819-1.png||height="379" width="317"]]
81		-
82		-|**Behavior on ACT**|**Function**|**Action**
83		-|**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.
84		-|**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.
85		-|**Fast press ACT 5 times**|Deactivate Device|red led will solid on for 5 seconds. This means LHT65N is in Deep Sleep Mode.
86		-
87		-
88		-
89		-= Sensors & Accessories =
90		-
91		-== E3 Temperature Probe ==
92		-
93		-[[image:image-20220515080154-4.png||height="182" width="161"]] [[image:image-20220515080330-5.png||height="201" width="195"]]
94		-
95		-
96		-With Temperature sensor with 2 meters cable long
97		-
98		-* Resolution: 0.0625 °C
99		-* ±0.5°C accuracy from -10°C to +85°C
100		-* ±2°C accuracy from -55°C to +125°C
101		-* Operating Range: -40 ~~ 125 °C
102		-* -55°C to 125°C
103		-* Working voltage 2.35v ~~ 5v
104		-
105		-
106	106	= Battery & How to replace =
107	107
108	108	== Battery Type ==
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110	110	LHT65N is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.
111	111
112	112	The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
113		-[[image:image-20220515075034-1.png||height="208" width="644"]]
	68	+[[image:image-20220515075034-1.png||height="208" width="644"]]
114	114
115	115
116	116	The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
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131	131
132	132	= Order Info =
133	133
134		-Part Number: (% class="mark" %)**LHT65N-XX**
	89	+Part Number: (% class="mark" %)**LHT65-XX**
135	135
136	136	**XX**: The default frequency band
137	137
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144	144	* **IN865**: LoRaWAN IN865 band
145	145	* **CN470**: LoRaWAN CN470 band
146	146
147		-**YY**: Sensor Accessories
148		-
149		-* **E3**: External Temperature Probe
150		-
151	151	= Packing Info =
152	152
153	153	**Package Includes**:
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170	170	(1) This device may not cause harmful interference, and
171	171
172	172	(2) this device must accept any interference received, including interference that may cause undesired operation
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	125	+
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Author

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1		-XWiki.Edwin

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1		-386.3 KB

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