Broadband double directional coupler socket for loop-through systems, preferably for smaller systems or at the end of a main line with many sockets. Connection attenuation: 10 dB. Stable die-cast housing. With screw and claw fastening, suitable for flush-mounted sockets 55 65 mm. Can be combined with almost all installation programs. Connections: TV IEC (Sti), Radio IEC (Bu). Shielding factor: 5-300 MHz > 85 dB, 300-470 MHz > 80 dB, 470-950 MHz > 75 dB, 950-2400 MHz > 55 dB.