Powerful receiver: This smart switch can make your garage / door / gate / light easy to control. After connecting with your device, you can use Phone + Voice + to control it Dry contact and wide working voltage support: DC / AC 12-24V are all ok. (12v 24v support) Work with many such as for /for /for /for etc Work with multi codes such as rolling code ( 301), learning code(EV1527) and fix code(PT2262) Timing module: You can set up a schedule on your phone.It has countdown function too Input voltage:DC/AC 12V-24V Radio Frequency:433Mhz 433.92MHz Codes: Working with any fixed and rolling code remote control Working temperature: -20℃-70℃ Programming: and hold the learn button on the receiver few seconds. Then hold and the remote control button to programming Delete code: and hold the delete code about 20 seconds Colour:As Shown Material:plastic Package Contents: 1 x Receiver 2 x Remote controls 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.