Tuya wifi pir smart motion sensor for smart home detect - Pack of 2 Smart WiFi Motion Sensors

About monitoring principles

1. The sensor uses infrared background radiation as the inspection principle

2. During installation, it is necessary to avoid direct sunlight and other heat sources, as they may interfere with inspection results.

3. It can only check changes in background radiation and cannot monitor movement of background radiation.

4. In order to avoid double alarms, logical judgments have been made inside:

--a. If the previous state is "no state", when someone is detected, immediately report an alarm and set the state to "human state". At the same time, activate the "Human state countdown timer" for 30 seconds and do not check before the end of the timer.

--b. If the "Human state countdown timer" stops, if someone is still present, restart the "Human state countdown timer" for 30 seconds.

--c. If the "Human state countdown timer" stops, if no one remains for 10 seconds, the sensor sets the state to "no state" and reports the information.

Therefore, it is not correct to test immediately by waving your arms once the setup is complete.

The correct testing method should be to completely leave the sensor for at least 40 seconds before re-entering the sensor's detection range.