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	1	+LHT65N LoRaWAN Temperature & Humidity Sensor Manual

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	1	+Main.WebHome

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	1	+{{box cssClass="floatinginfobox" title="**Contents**"}}
	2	+{{toc/}}
	3	+{{/box}}
	4	+
	5	+= Overview =
	6	+
	7	+[[image:LHT65N_10.png||alt="LHT65_Image" height="265" width="265"]]
	8	+
	9	+
	10	+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**(%%)**.**
	11	+
	12	+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.
	13	+
	14	+LHT65N has a built-in 2400mAh non-chargeable battery which can be used for up to 10 years*.
	15	+
	16	+LHT65N is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.
	17	+
	18	+LHT65N supports (% class="mark" %)Datalog Feature(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.
	19	+
	20	+*The actual battery life depends on how often to send data, please see the battery analyzer chapter.
	21	+
	22	+
	23	+== Features: ==
	24	+
	25	+* Wall mountable
	26	+* LoRaWAN v1.0.3 Class A protocol
	27	+* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915
	28	+* AT Commands to change parameters
	29	+* Remote configure parameters via LoRaWAN Downlink
	30	+* Firmware upgradable via program port
	31	+* Built-in 2400mAh battery for up to 10 years of use.
	32	+* Built-in Temperature & Humidity sensor
	33	+* Optional External Sensors
	34	+* Tri-color LED to indicate working status
	35	+* Datalog feature
	36	+
	37	+== Specification: ==
	38	+
	39	+**Built-in Temperature Sensor:**
	40	+
	41	+* Resolution: 0.01 °C
	42	+* Accuracy Tolerance : Typ ±0.3 °C
	43	+* Long Term Drift: < 0.02 °C/yr
	44	+* Operating Range: -40 ~~ 85 °C
	45	+
	46	+**Built-in Humidity Sensor:**
	47	+
	48	+* Resolution: 0.04 %RH
	49	+* Accuracy Tolerance : Typ ±3 %RH
	50	+* Long Term Drift: < 0.02 °C/yr
	51	+* Operating Range: 0 ~~ 96 %RH
	52	+
	53	+**External Temperature Sensor:**
	54	+
	55	+* Resolution: 0.0625 °C
	56	+* ±0.5°C accuracy from -10°C to +85°C
	57	+* ±2°C accuracy from -55°C to +125°C
	58	+* Operating Range: -55 °C ~~ 125 °C
	59	+
	60	+
	61	+= Battery & How to replace =
	62	+
	63	+== Battery Type ==
	64	+
	65	+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.
	66	+
	67	+The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.
	68	+[[image:image-20220515075034-1.png||height="208" width="644"]]
	69	+
	70	+
	71	+The minimum Working Voltage for the LHT65N is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
	72	+
	73	+
	74	+== Replace Battery ==
	75	+
	76	+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.
	77	+
	78	+[[image:image-20220515075440-2.png||height="338" width="272"]][[image:image-20220515075625-3.png||height="193" width="257"]]
	79	+
	80	+
	81	+== Battery Life Analyze ==
	82	+
	83	+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:
	84	+https:~/~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf
	85	+
	86	+
	87	+= Order Info =
	88	+
	89	+Part Number: (% class="mark" %)**LHT65-XX**
	90	+
	91	+**XX**: The default frequency band
	92	+
	93	+* **AS923**: LoRaWAN AS923 band
	94	+* **AU915**: LoRaWAN AU915 band
	95	+* **EU433**: LoRaWAN EU433 band
	96	+* **EU868**: LoRaWAN EU868 band
	97	+* **KR920**: LoRaWAN KR920 band
	98	+* **US915**: LoRaWAN US915 band
	99	+* **IN865**: LoRaWAN IN865 band
	100	+* **CN470**: LoRaWAN CN470 band
	101	+
	102	+= Packing Info =
	103	+
	104	+**Package Includes**:
	105	+
	106	+* LHT65N Temperature & Humidity Sensor x 1
	107	+* Program cable x 1
	108	+* Optional external sensor
	109	+
	110	+**Dimension and weight**:
	111	+
	112	+* Device Size:  13.5 x 7 x 3 cm
	113	+* Device Weight: 105g
	114	+* Package Size / pcs : 14.5 x 8 x 5 cm
	115	+* Weight / pcs : 170g
	116	+
	117	+= FCC Warning =
	118	+
	119	+This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:
	120	+
	121	+(1) This device may not cause harmful interference, and
	122	+
	123	+(2) this device must accept any interference received, including interference that may cause undesired operation
	124	+
	125	+
	126	+

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