This is the Standard M6-S series outlet 6dB [F3211135] Standard socket for TV & radio. M6 S is a serie of sockets for cascade and star-shaped systems. The frequency ranges for each output are: TV 5-68 and 174-862MHz, FM 87.5-108 MHz. The socket is specially designed to fit into Schneider"s system of mounting frames. The last slot of each loop must be terminated with a termination resistor. ...Contact us if you need more help.