Extra Alert SensorDetects motion of pedestrian and vehicles when they approach your home and property. Box contains 1 sensor unit, and mounting bracket and hardware.To be used with the Chamberlain Wireless Pedestrian and Vehicle Alert (model RWA300R)Detects motion up to 30 feet away with wide 120 degree coverageTransmits signal to base up to 900 feet awayFeatures adjustable sensitivity control to prevent false alerts from small animals
