Motion Sensor Alarm ,Wireless Driveway Alarm Indoor Home Security Business Detector Alert System -Monitor&Protect Property - 2 Receiver And 3 Pir Sensor-38 Chime Tunescolor:3 Sensors 2 Receiver Specifications 1Working Voltage of the Receiver:110V-240V 2Working Voltage of the PIR Sensor:45V(3 AAA batteries not included) 3Receiver Switch Setting : 1)..