Wireless passive infrared light and alarm Working status: Light and Light + Alarm Workingfrequency: 434 MHz. Different indication sounds for arming and disarming the unit. Remotecontrol distance = 15m Inductiondistance = 5m. Motionsensor alarm is armed / disarmed by the remote control supplied PIR Sensor requires 4 x AA Batteries (not included) Remote control requires 1 x 23A Battery (included)