This device features a powerful 30A relay and a 1-channel receiver, ensuring reliable operation over a wide range of voltages. Versatile Compatibility: Designed to work efficiently with various types of garage doors and gate systems, making it a universal solution for your access needs. Easy Installation: The system is user-friendly, allowing for quick and straightforward installation without the need for professional help. Enjoy the convenience of wireless control right at your fingertips. [Signal]Wireless RF signal can pass through walls, floors, doors or . You can use two or more units in the same place. You can turn on/ off the receiver with mitter from any place within a reliable distance(Max range is up to 164ft/50m with no obstacle). Max load current: 30A Due to different batches, there may be differences in product appearance and printed text, which not affect use Colour:Black Material:ABS Package Contents: 1 x Wireless Control Switch 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.