EMX NIR Retro-Reflective Photoeye Safety Sensors Can be used as a reversing sensor for commercial overhead doors, gates and parking barriers Flexible Voltage 12V AC/DC to 240V AC. Watertight Package, 30 feet range, 6 foot cord. Bracket and Mounting hardware included. Two LED Indicators, Sensitivity adjustment. Compact water-tight design allows for outdoor installation Mounting hardware and indicators make it easy to install.