Chamberlain Rwa300R/0120 Wireless Alert System. System Includes 1 Passive Infrared Sensor & 1 Receiver ; Extremely Easy To Use & Install--Sets Up In Minutes; Sensor Has A 30-Ft Range & Can Transmit A Signal To The Receiver Up To 1200 Ft Away ; Connects Up To 4 Sensors; Detects Humans & Vehicles, Ignores Animals ; Waterproof Sensor Assembly ; Includes Weather Shield To Protect Sensor From The Elements ; Receiver Features Sound Control & Has An Output To Trigger External Alarms Or Bells; Requires 4 Aa Batteries For Sensor Operation--Can Last For 2 Years ; Microprocessor Code-Learning Technology Eliminates False Alarms--Receiver Responds Only To Transmitters Assigned To It ; 1 Sensor Can Communicate With Multiple ;Receivers In Larger Installations ; Sensor & Receiver Each Measure Less Than 4"H X 3"W X 2"D ; 1-Year Warranty & Toll-Free Tech Support

One Year Manufacturer Warranty.

A 20% restocking fee will be charged on returns or exchanges of any opened audio, telephone systems, home theater systems, dvd players, cameras, camcorders, digital cameras, radar detectors, electronic accessories or etc. unless defective. **Customer responsible for return postage.