The Alarm Controls SREX-100 Active Focused Infrared Detector is designed to eliminate cross-traffic activation. The activation area is limited to a door handle, so there are no false alarms from pets or other outside interference. The Detector is easily installed and has an adjustable depth zone. It operates on 12 or 24V AC or DC and current draw of 60MA. A keypad or card reader input, time delay of 1 to 60 seconds, and built in buzzer are included as well.