IR light barrier. Range: 10 meters. Response time: 5 to 100 milliseconds. Detection: retroreflection. You can use this photoelectric light barrier, for example, to open garage doors, depots, or barriers. The range is ten meters, and the response time is between five and 100 milliseconds. When the IR beam is interrupted, a yellow LED lights up as an operating indicator. Easily and quickly mount the light barrier at a suitable location using the included mounting bracket and screws.