Velleman 10 channel 2 wire remote control kit velleman k8023 the velleman 10 channel 2 wire remote control kit allows you to control up to 10 devices using only 2 wires from up to 50 metres away inputs can be push buttons switches or open collector outputs from another device and the receiver section provides 10 open collector outputs that allow you to control relays directly terminal block connectors for all input and output connections are included velleman k8023 10 channel 2 wire rem