PIR motion detector ST106, the product is a new type of sensor switch; it adopts infrared energy detector, IC and SMD technology.When one enters the product's detecting range, the infrared sensor work and output signal to its matched control unit, the control unit will alarm. FEATURES : selectable pulse width; high interference immune; automatic temperature compensation; tamper switch; vertical adjustment sensitivity; preventing pet design; installation flexible and convenient; sensitivity adjustable.Note : Avoid exposing the detector to direct strong air flow, unstable temperature sources and direct sunlight.