1. Quad Beam detection, four synchronized pulsed infrared bearnsensure ultimate stability inany applications, False alarms due tofalling leavesand small animals are virtuallv,eliminated. 2. Easy opticall alignment with LED indication 10-Level LED indicatorwe can check beam strength easily, highly accurate lignment, no needto use voltmeter,no need for using beam blocking plate. 3. selectable 8- channel beam frequencies. Selectable beamfrequencies for beam stacking andlong distance appliations withoutcrosstalk. 4. Up to 8-sets for multiple installation. 5. adjustable beam interruption perod (50-700msec). 6. Lighting & surge protection, Automantic gain control circuit. 7. Form C relay providing more applications. 8. Anti-Forest design. 9. Target color, structure colors, is tuned to peak wavelengths ofhuman vision to be easily trageted in thebeam alignment process.