Description <br> [Easy to Use ]We have made mitter and receiver working together and test it before ship it,when you get it dont need to do anything ,just install it. <br> [Widely Use]This remote switch used in industrial control and security fields, such as light, motor, remote controller, wireless security alarm, windows,lifting equipment, electric doors, wireless door alarm,security industry machine , wireless controller, and other fields <br> [Signal]Wireless RF signal can pass through walls, floors, doors or windows. 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). <br> [Learning code] the Learning code has high-level security for its low repetitive rate and re-learn mode, it can delete the old code and re-learn a new code,when a remote control get lost,So you could always control of it. <br> <br> Buttons: 2 Buttons <br> Remote Distance: 20-50M <br> Working frequency: 433mhz <br> Max load current: 30A <br> Encode: Fixed code / EV1527 code <br> Due to different batches, there may be differences in product appearance and printed text, which will not affect use <br> Colour:Black <br> Material:ABS <br> <br> Package Contents: <br> 1 x Remote Switch <br> 4 x Remote Controls <br> <br> Only the above package content, other products are not included. <br> 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. <br>