RF remote control transmitter & receiver model of 0020204 (S12CA-DC091224 & CV-12) includes one 12-button remote transmitter and one 12-channel receiver. Each remote button controls each channel of receiver on and off. It can be used to control at most 12 same or different on off electrical devices. Remote distance up to 500m. It is widely applied for remote controlling on off electrical devices such as lights, fans, electric door locks, etc.br br This system has 12 control modes. Here in the video we show 4 of them.