Chamberlain Additional Sensor For Wireless Alert System With 2-Way Voice Communication

Extra Alert Sensor with Voice Detects motion of pedestrians and vehicles and allows you to speak with them To be used with the Chamberlain Wireless Vehicle and Pedestrian Alert with Voice Detects motion up to 30 feet away with wide 120 degree coverage Transmits signal to base up to 1,200 feet away 2-way voice communication with receiver Motion sensor features adjustable sensitivity control to prevent false alerts from small animals Advanced passive IR sensor distinguishes between vehicles, humans and animals Expandable up to 8 remote sensors Compatible with alert system (RWV-400R) Box contains 1 sensor unit, and mounting bracket and hardware. Requires 4 "AA" batteries

Advanced passive IR sensor distinguishes between vehicles, humans and animals