[Anti-interference] Narrow infrared beam (I or II) can avoid interruption by external light [Detection distance] Even installed at low height(20-40cm from the floor), the detecting distance can also be guaranteed(5-15meters). [Receiver and Transmitter] Consists of a transmitter and a receiver, and the integrated amplifier can produce infrared beam. [Application] Compatible with sliding gate openers,garage door openers and other access control systems., Weight: 0.31415872335 Pounds, Manufacturer: Aboiled