Today many available commercial motion sensor light switches on the market, one of the brands that are sought after a Leviton motion sensor light switch type PR180-1LW Leviton decora Incandescent 500W, Passive Infrared Wall Switch Occupancy Sensor. You can buy it at a price of about $ 15. Motion sensors are widely used for home security, office, or the places that require extra security.
Motion sensor light switch is a human motion detector that works in a range of infrared detection. If the PIR sensor devices receive the infrared energy emitted by the human body, it will eventually be switching relay which in turn will turn on the lights. So the function of the use of this switch sensor for security purposes, particularly at nighttime conditions.
In addition to buying a human motion detector, if you want to do it yourself (DIY), a motion sensor switch, is now also widely available PIR sensor modules that are sold in general, so that by adding a high-gain amplifier which is equipped with a relay switch, then this it works as a motion sensor light switch.
Motion Sensor Light Switch
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