The ZPP-4645F is overvoltage protection of the receivers operating in terrestrial TV full band. It is used for example to protection of: TV receivers, HiFi sets, amplifiers. The device starts to work above 35 V voltage level, in 5-2400 MHz band at attenuation parameter below 0.5 dB. These parameters allow also to work in CATV with return channel applications. Replacement for MSS-01.