Used as a reversing sensor for automatic garage door, gates, and packing barriers. Protects by sensing for person or vehicle in danger zones. It is very easy to install and use with reliable performance. Detection Method: Retro-Reflective. Angle: approximately 1.5 degrees. Maximum sensor range: 40 feet. Supply Voltage: 12-36 VDC or 12-24 VAC Output: Relay SPDT. Output capacity: 1A/24VDC, 1A/120VAC. Protection degree: IP66. When it comes to keeping your automated gate safe, ALEKO Infrared sensor is the way to go. Attain peace knowing your family and vehicle will be protected from the occasional mishap that can sometimes occur. One or two carefully placed sensors can keep your automatic gate opener from closing accidentally on a vehicle or more importantly on a person. Used as a reversing sensor for automatic garage door, gates, and packing barriers. Protects by sensing for person or vehicle in danger zones. It is very easy to install and use with reliable performance.