[Receiver and Transmitter] Consists of a transmitter and a receiver, and the integrated amplifier can produce infrared beam.[Antiinterference] Narrow infrared beam (I or II) can avoid interruption by external light[Detection distance] Even installed at low height(2040cm from the floor), the detecting distance can also be guaranteed(515meters).[Application] Compatible with sliding gate openers,garage door openers and other access control systems.Technology: InfraredReceiver Range:Less than 20m (Range can be reduced to 30% in bad weatherconditions: for, rain, dust, etc)POWER SUPPLY:12 24V DC/ACOPERATING TEMPERATURE:10 to 70Note:Due to different production batches, there are differences in appearance, which does not affect usage.Colour:BlackMaterial:PlasticPackage Contents:1 x Receiver1 x TransmitterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/ 13cm.