Product details:

Summary: F-Female connectors. Attenuation less than 0.2 dB. Frequency range up to 3 GHz. Replaceable gas discharge element. This 75 ohm lightning surge protecting tool protects cell phone signal amplifiers from power surges typically caused by lightning strikes to antennas mounted outdoors. Specifically made for 75 ohm systems, these lightening surge arrestors come with Type F-Female connectors on each side. It is designed to be placed between amplifier and outside antenna cable connection. It needs to be grounded. A RG6 coaxial cable needs to be placed between arrestor and amplifier to protect the system effectively.