1. Composed of a transmitter and a receiver, the integrated amplifier can generate an infrared beam. 2. Can avoid interference from external light 3. Even if installed at a lower height (20-40 cm from the floor), the detection distance (5-15 meters) can be guaranteed. 4. The produced beam provides a self-checking function for the sliding door. Once the self-test beam is interrupted, the door will stop closing and quickly reverse to its maximum width. The door will remain open until the detection beam is restored. When the door is fully closed, the detection beam is invalid 5. Used for automatic sliding doors, automatic doors, rolling doors, garage doors, windows, guardrails Working voltage: 12-24 (V) Alarm current: 1 (mA) Detection angle: 90 Quiescent current: 1 () Working temperature: -10 to+ 70 Detection distance: 10-20 (m) Scope of application: sliding doors, doors and windows, garage doors Installation : wall-mounted Communication : infrared Installation: The optimal installation height should be 20 cm. The installation distance is not less than 2 meters. The installation should be such that the red outside is placed vertically and on the same horizontal line. Installation should be done first to accommodate the parts. Reinstall the blast components. When they are together, they are always online. Connect the OFF light on the machine so that it goes out, and then fix it, that is, the connection line installation is completed Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour:Black Material:Metal+PVC Package Contents: 2 x Infrared Detectors 1 x screw pack Only 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 +/- 1-3cm.