[Easy to use] We have made the transmitter and receiver work together and tested it before delivery, so you don't need to do anything, just install it.[Wide application] This remote control switch is used in industrial control and security fields, such as lights, motor, remote control, wireless security alarm, lifting equipment, electric doors, wireless door alarm, security industrial machinery, wireless controller and other fields.[Signal] Wireless RF signal can pass through walls, floors, doors or. You can use two or more devices in the same place. You can turn on/off the receiver with the transmitter from any place within a reliable distance (Max range is up to 50m without obstacles).[Learning code] The learning code has high security due to its low repetitive frequency and learning mode, it can erase the old code and learn a new code, when a remote control is lost, so you can always have control over it.Buttons: 2 buttonsRemote distance: 20-50MWorking frequency: 433mhzMaximum load current: 30ACoding: Fixed code / EV1527 codeDue to different batches, there may be differences in product appearance and printed text, which does not affect useColor: As shownMaterial: ABSPackage contents:1 x Remote control switch2 x Remote controlsOnly 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 +/- 1-3 cm.