Bosch Request-to-exit Sensor, BlackThe Bosch Request to exit Sensor, Black is a high performance motion detector purpose built for secure, hands free access control in a wide range of environments. Part of the Detector Series, which includes the DS150i and DS151i detectors, this sensor is engineered to monitor an area in front of doors and instantly signal a door control or access control system when movement is detected. Designed to blend discreetly into modern security installations,