ESM 20 modem single connection box selective. Complies with: EN 50083-1. EN 50083-2. For interactive CATV/HFC networks. Single connection box for spur line and star distribution systems with very low connection attenuation. Very high decoupling between modem and TV/radio connection prevents interference with TV/radio reception from the modem. Ingress noise blocking function prevents unwanted interference signals from entering the subscriber terminals. Selective signal distribution to TV and radio connection. Stable die-cast housing. With screw and claw fastening, suitable for flush-mounted boxes 55-65 mm. Can be combined with almost all installation programs. Shielding level: 5-300 MHz: > 85 dB. 300-470 MHz: > 80 dB. 470-862 MHz: > 75 dB.