Surge current relay with 4 channels, 1 NO contact each non-potential-free 4A/250V AC. With light-setting control via PC or with radio buttons. Encrypted radio, bi-directional radio and repeater function can be activated. Stand-by loss only 0.8 watts. Mounting in the 230V mains connection cable, for example in intermediate ceilings and lights. 166mm long, 46mm wide and 31mm high. With cable strain relief. If the supply voltage fails, it is switched off in a defined way. The channels can be taught in independantly of each other as EITHER A SINGLE channel or A SINGLE channel. Scene control: With one of the four control signals of a button programd as scene button with double rocker, several channels of one or more FSR71NP-4x can be switched on or off for each scene. Central commands on the PC are sent with the building radio visualization and control software GFVS. To do this, teach in one or more FSR71NP-4x on the PC. The rotary switches are used to teach in the buttons and, if necessary