35ft Reflective Photoelectric Beam Sensor. Range: The SECO-LARM Enforcer E-931-S35RRQ photo eye is a sensor for garage doors, outdoor gates or overhead doors, and can beused in industrial automation to detect objects on the manufacturing line. Weatherproof (IP 66) construction for indoor/outdoor usage. Dark ON operation. Pre-wired 6ft (2m) Cord. Bracket and mounting hardware Included. Adjustable sensing distance. Compact size. Up to 35ft. 12~240 VDC or 24~240 VAC. 1A Relay output, NO/NC/COM.