Note: 1. The essential condition for the selection of the remote control, the copyed remote control operates normal, chip is compatible and frequency is correct. 2. Before buying, please make sure the copyed remote control operating frequency or choose & buy the frequency adjustable type remote control. 3. Before buying, please confirm whether your remote control can be copyed or not. 4. The remote control can copy the fixed codes and learning codes. It can't copy original car remote control, two-way remote control and rolling code remote control (Rolling code chips start with HCS commonly, such as HCS200, HCS201, HCS300, HCS301, etc) Specifications: Operating Voltage: DC12V Operating Current: 12mA Button: 4 Buttons Battery: button battery (included) Wireless Communication: RF RF Frequency: 433MHz Encoding Type: Self Copy Modulation System: ASK (Amplitude Modulation) Transmission Distance: 50-100m(Open space) Material: ABS Item Size: 9*6*1.5cm Package Size: Approx. 9*6*1.5cm Package Weight: Approx. 21g Package List: 1* Remote Controller (with battery)