Coaxial Lightning Arrestor Surge Protector SMA Female to SMA Female 50 Ohm DC-6Ghz. It is a coaxial SMA Surge Protector that operates over the frequency range of 0-6 GHz. It uses a gas discharge tube to protect connected equipment against transients and surges caused by lightning strikes. It features standard 50 Ohm SMA-Female to SMA-Female coaxial connectors. Protects cell phone signal boosters/amplifiers from power surges typically caused by lightning strikes to antennas mounted outdoors. Designed to be placed between amplifier and outside antenna cable connection, need to be grounded. (DC Pass) Electrical Specifications: Input Impedance: 50Ω Frequency Range: DC - 6 GHz Durability: ≥ 500 cycles VSWR: <1.3:1 Insertion Loss: <0.4dB DC Breakdown Voltage: 90 V Mechanical & Environmental: Connector Types: SMA-Female to SMA-Female Connector Body Material: Brass nickel plated Pin：Body brass gold plated Insulator Material: PTFE( Teflon) Temperature Range: （-55℃ to +155℃） Package: 1 x SMA Coax Lightning Arrestor Surge Protector SMA-Female to SMA-Female 50 Ohm DC-6Ghz( with 90V gas discharge element )