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428	428	(% style="color:red" %)**Notice: PIR can only detect motion activity, not to use to detect static people case.**
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430	430	* 1. PIR Motion Detector should not be installed near the Air conditioner places where with cold wind or hot wind flow, because PIR motion detector is sensitive with the temperature changes of the environment. Environment changes quickly will cause a false alarm.
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431	431	* 2. PIR should not be installed facing the glass window, facing glass window will be interfered by the outside sunlight and moving objects (people or vehicle). The infrared energy can penetrate the glass window.
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432	432	* 3. PIR should not be installed facing the moving objects or background changing objects, movement object will cause airflow change, it may cause false alarm.
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433	433	* 4. Between the detection range of PIR Motion detector, there is should be less objects.  Many objects may reduce the sensitive of detection range.
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434	434	* 5. Do not install more than one (2 or above) Wireless PIR in the same detection space (like at the same room).
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436	436	= 3. Sensors and Accessories =
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461	461	LHT65N-PIR supports below configure method:
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463	463	* AT Command via UART Connection : See [[FAQ>>||anchor="H7.FAQ"]].
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464	464	* LoRaWAN Downlink.  Instruction for different platforms: See [[IoT LoRaWAN Server>>url:http://wiki.dragino.com/xwiki/bin/view/Main/]] section.
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466	466	== 4.2 General Commands ==