Only works on the 433 MHz frequency (433.92 MHz). 4 buttons, the device has the ability to memorize up to 4 different radio control codes. compatible with most remote controls with a fixed code frequency of 433 MHz. Remember to make the copy in an environment that does not have disturbing waves (e.g. Wifi, radio, etc.). It is a perfect remote control for garage doors, entrance doors, alarm systems, heating systems, home automation, lighting, etc. Package Content: 3 x Universal Remote Control. Product Description 3pcs universal remote controls for Automatic Gate frequency 433.92 MHz Fixed Code, 4 Buttons to control up to 4 Doors