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327	327	* RED LED when external sensor is not connected
328	328	* For each success downlink, the PURPLE LED will blink once
329	329
	330	+
330	330	== 2.9 installation ==
331	331
332	332	~1. Don't install LHT65N-PIR outdoor or place where will get wet
...	...	@@ -466,15 +466,47 @@
466	466
467	467	* There is no downlink command to set to Sleep mode.
468	468
	470	+= 5. Battery & How to replace =
	471	+
	472	+== 5.1 Battery Type ==
	473	+
	474	+
	475	+(((
	476	+LHT65N-E5 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.
	477	+)))
	478	+
	479	+(((
	480	+The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.
	481	+
	482	+
	483	+[[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]
	484	+)))
	485	+
	486	+The minimum Working Voltage for the LHT65N-E5 is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.
469	469
470	470
471		-= 5. Battery & Power Consumption =
	489	+== 5.2 Replace Battery ==
472	472
473		-LHT65N-PIR use **CR17450** battery pack. See below link for detail information about the battery info and how to replace.
474	474
475		-[[**Battery Info & Power Consumption Analyze**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
	492	+LHT65N-E5 has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery (3.0v). Any brand should be ok.
476	476
	494	+[[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]
477	477
	496	+
	497	+== 5.3 Battery Life Analyze ==
	498	+
	499	+
	500	+(((
	501	+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:
	502	+[[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]
	503	+)))
	504	+
	505	+
	506	+(((
	507	+A full detail test report for LHT65N-E5 on different frequency can be found at : [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0>>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]
	508	+)))
	509	+
	510	+
478	478	= 6. FAQ =
479	479
480	480	== 6.1 How to use AT Command? ==