The Bosch ISC-BDL2-WP12G motion detector combines PIR and microwave technologies to provide effective pet-friendly motion detection. Sensor sensitivity adjusts based on signal amplitude slope and timing to respond to human targets while remaining immune to animals up to 100lbs. The detectors optical sensor is protected from insects and dust further decreasing the chance of false alarms. The detector is made with a durable plastic cover and boasts a 40 foot x 40 foot coverage range. The device comes outfitted with an LED to convey sensor status and the recommended mounting height is flexible from 7.5 to 9 feet. Also known as -BLUE LINE GEN2 TRITECH MOTION PERPDETECTORS 40FT BY 40FT-Bosch BDL2-WP12G TriTech Motion Detector Pet Immune