... is widely used in the field of garage door, lighting, curtain... High confidentiality, large storage , stable performance! Feature:Wireless control, ... / each channelTransmitter:Model No.: C-1 Channel: 1 CH Remote Control Distance: 100m / 300ft (theoretically) Encode: Fixed code by ... the other series of remote control, such as CV Serie ( 500m / 1500ft ), CB Serie (1000m/3000ft); Or you can replace the ...