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Last modified by Xiaoling on 2025/06/10 09:17
From version 22.1
edited by Edwin Chen
on 2023/04/11 12:04
Change comment: There is no comment for this version
To version 19.1
edited by Edwin Chen
on 2023/04/09 09:37
Change comment: There is no comment for this version

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Title
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1 -LHT65-PIR Temperature/Humidity/PIR Motion Sensor User Manual
1 +LHT65-PIR Temperature/Humidity/PIR Sensor User Manual
Content
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394 394  
395 395  == 2.8 installation ==
396 396  
397 -~1. Don't install LHT65N-PIR outdoor or place where will get wet.
397 +~1. Don't install LHT65N-PIR outdoor or place where will get wet
398 398  
399 -2. Towards the PIR probe to the place where need to monitor activity. Below is the detect beam.
399 +2. Towards the PIR probe to the place where need to monitor activity.
400 400  
401 401  
402 -**Notice: PIR can only detect motion activity, not to use to detect static people case.**
403 403  
404 -* 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.
405 -* 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.
406 -* 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.
407 -* 4. Between the detection range of PIR Motion detector, there is should be less objects.  Many objects may reduce the sensitive of detection range.
408 -* 5. Do not install more than one (2 or above) Wireless PIR in the same detection space (like at the same room).
409 -
410 -
411 -
412 -
413 413  = 3. Sensors and Accessories =
414 414  
415 415  == 3.1 E2 Extension Cable ==
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539 539  * **AT+UOA=0**  : Disable UoA
540 540  * **AT+UOA=1,2** :  Enable UoA , Calm Down Time: 2 minutes. If device already send a uplink on activity, it will not send another uplink on activiy in 2 minutes, even detect activity.
541 541  
542 -Notice: Calm Down time range is 1 ~~ 65535 minutes. If user set Calm Down time to low value, such as 1 minute, the sensor might send uplink very frequenctly and battery drain fast.
543 -
544 544  (% style="color:#4f81bd" %)**AT Command: AT+UOA**
545 545  
546 546  
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1 -XWiki.Edwin
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