This is a fixed frequency remote cloner (433.92mhz) for copying 99.99% common fixed and learning code remote controls. Applicable to automobiles, garage doors, doors, skylights, car/motorcycle alarms, products, short-distance wireless remote control products, electrical appliances/home automation lamps, industrial control products, etc. Easy to use, 4-channel remote control system with anti-theft/one-click anti-theft helps you control your gadgets, cars, homes and garages. Clone up to 4 remote signals from 4 different remotes.Simple pairing with the remote. Operating Frequency: 433MHz Remote Control Range: Up to 50 meters Due to different batches, there may be differences in product printed text, which not affect use Color: Black Material: plastic Package Contents: 20 x Remote Control 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.