Specifications: Working 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 control keys 1 x manual Note: Only works for 433MHz, the transmission distance is 50-100m (open space), giving you a new remote control experience and great convenience in your daily life. 1. Garage door opener, cloning and duplicating your existing remote controls for cars, car sunroofs, garage doors, gates, heating systems, home automation, etc. 2. Popular model, new designs with a cover and the four buttons ABCD can copy four different types of chips, meaning one remote control can control four different types of facilities. 3. Durable and the color never fades, water plating ensures durability, high accuracy in copying and high efficiency in copying, duplicate your existing remote control if you lose it. 4. Very small error margin when copying data code and copying oscillation resistance. Secrecy is strong. But you must note that it cannot copy rolling code.