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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 upgradable via program port
	30	+* Firmware upgradeable 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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57	57	* ±2°C accuracy from -55°C to +125°C
58	58	* Operating Range: -55 °C ~~ 125 °C
59	59
	60	+= Sensors & Accessories =
	61	+
	62	+== E3 Temperature Probe ==
	63	+
	64	+[[image:image-20220515080154-4.png||height="182" width="161"]] [[image:image-20220515080330-5.png||height="201" width="195"]]
	65	+
	66	+
	67	+With Temperature sensor with 2 meters cable long
	68	+
	69	+* Resolution: 0.0625 °C
	70	+* ±0.5°C accuracy from -10°C to +85°C
	71	+* ±2°C accuracy from -55°C to +125°C
	72	+* Operating Range: -40 ~~ 125 °C
	73	+* -55°C to 125°C
	74	+* Working voltage 2.35v ~~ 5v
	75	+
	76	+
	77	+= Battery & How to replace =
	78	+
	79	+== Battery Type ==
	80	+
	81	+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.
	82	+
	83	+The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
	84	+[[image:image-20220515075034-1.png||height="208" width="644"]]
	85	+
	86	+
	87	+The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
	88	+
	89	+
	90	+== Replace Battery ==
	91	+
	92	+LHT65N has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery. Any brand should be ok.
	93	+
	94	+[[image:image-20220515075440-2.png||height="338" width="272"]][[image:image-20220515075625-3.png||height="193" width="257"]]
	95	+
	96	+
	97	+== Battery Life Analyze ==
	98	+
	99	+Dragino battery-powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimated battery life:
	100	+https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
	101	+
	102	+
60	60	= Order Info =
61	61
62		-Part Number: (% class="mark" %)**LHT65-XX**
	105	+Part Number: (% class="mark" %)**LHT65N-XX**
63	63
64	64	**XX**: The default frequency band
65	65
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72	72	* **IN865**: LoRaWAN IN865 band
73	73	* **CN470**: LoRaWAN CN470 band
74	74
	118	+**YY**: Sensor Accessories
	119	+
	120	+* **E3**: External Temperature Probe
	121	+
75	75	= Packing Info =
76	76
77	77	**Package Includes**:
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87	87	* Package Size / pcs : 14.5 x 8 x 5 cm
88	88	* Weight / pcs : 170g
89	89
90		-
91	91	= FCC Warning =
92	92
93	93	This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
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97	97	(2) this device must accept any interference received, including interference that may cause undesired operation
98	98
99	99
100		-

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