PASSIVE INFRA-RED ALARM WITH REMOTE CONTROL Movement activiated PIR ALARM as someone approaches. Infra-Red REMOTE CONTROL to Arm and Disarm the Alarm The Easiest way to protect your properties No wiring is required. Battery operated. Protect your home easily with this easy to use Remote Alarm System. Use the remote to arm or disarm the system. No installation necessary - simply mount on wall or desktop. Passive Infra Red (PIR) Sensor detects motion up to 20 feet away. 4 AAA batteries (not included).