It has standard 50 Ohm with UHF-Male(PL259 plug) to UHF-Female(SO239 socket) coaxial connectors.
It is a coaxial UHF Surge Protector, operates over the frequency range of 0-1 GHz.
Designed to be placed between amplifier and outside antenna cable connection, need to be grounded. (DC Pass)
Protect your amplifier and boosted devices from power surges typically caused by lightning strikes to outdoor antennas.

Material:
Body: brass nickel plated
Pin: Body brass gold plated
Insulator: Teflon(PTFE)
Specifications:
Connectors: UHF Male PL259 to UHF Female SO239
Impedance: 50 ohm, specifically for 50 ohm systems
VSWR: ≤1.2
Insertion Loss: ≤0.2dB
Frequency Range: DC - 1 GHz
Temperature range: -40°C to +85 °C
Insulation Resistance: ≥ 5000MΩ Durability: ≥ 500 cycles
Contact Resistance: Center conductor ≤ 1.5mΩ, Outer conductor ≤ 1mΩ

Package Include:
1pc UHF Male to Female Lightning Arrestor surge protector