Wireless dual detector (PIR + microwave), high immunity to false alarms, as PIR AND microwave detectors must be triggered. Detection range 12m x 120°. Immediate or delayed alarm. Sensitivity adjustable. Incl. tamper switch. Frequency: 868 MHz. Power supply: 1x 3.6V AA lithium battery (LST14500, included). Dimensions: 60 x 110 x 55mm.