1. Garage door opener, clone and duplicate your existing remote controls for cars, car sunroofs, garage doors, gates, heating systems, home automation, etc. 2. Popular model, new design with a cover and ABCD four buttons that can copy four different types of chips, which means one remote control can control four different types of facilities. 3. Durable and the color will never fade, water plating ensures durability, high copying accuracy and high copying efficiency, duplicate your existing remote control if you have lost it. 4. Ultra small error in copying data code and copying oscillation resistance. Integrity is strong. But you must note that it cannot copy rolling code. Note: only works for 433MHz, transmission distance is 50-100m (open space), giving you a new experience of remote control and great convenience in your daily life. Operating frequency: 433 (433.92) MHz Rated voltage: DC 12V Battery: 12V 27A (included) Size: 54 x 29 x 14 mm Weight: 28 g Working current: 10mA Output power: 10mw Transmission distance: 50-100M Package includes: 4 x remote key fobs 1 x manual