Featuring tri-focus optics technology, the ISC-PPR1-W16 Professional Series PIR Motion Detector from Bosch uses optics with three focal lengths for long-, medium-, and short-range coverage. Its 90 field of view covers up to an 50 x 70' area, or a narrower 25 x 33' area. Sensor Data Fusion technology analyzes signals from four sensors, including two pyroelectric sensors, a room temperature sensor, and a white light level sensor to provide accurate detection. The detector adjusts its sensitivity to compensate for weather, ensuring accurate operation in varying weather conditions, and features self-adjusting LED brightness to automatically adjust to the surrounding light level. There is a blue LED that indicates an alarm condition and activates during a remote walk test. The detector is immune to draft, insect, and small animals under 10 lb, helping to reduce false alarms. Installation is quick with its self-locking enclosure and built-in bubble level. PIR motion sensor with Sensor Data Fusion technology 90 field of view covers a 50 x 70' or 25 x 33' area Tri-focus optics with three specific optic focal lengths (long-, medium-, short-range) for accurate detection Active white light suppression measures light intensity and eliminates false alarms Dynamic temperature compensation adjusts sensitivity for use in varying weather conditions Self-adjusting LED with remote walk test function via DIP switch Alarm memory flashes the alarm LED to indicate stored alarms across multiple units (available separately) Solid state relays send silent alarm output signals for discreet operation Draft, insect, and small animal immunity reduces false alarms Remote self-test and trouble memory Input power supervision activates the trouble relay when power is below 8 V Cover and wall tamper switch detects and sends an alert if the detector cover is tampered with or removed, or if the detector is removed from the wall Self-locking enclosure with built-in bubble level