Coaxial thunder-- exquisite workmanship, reasonable structure, professional and practical, can bring you convenience. Arrester for -- protect your outdoor antenna or signal transmission equipment from damage. Coaxial surge protector-- comprehensive protection: absorb and ground the from the antenna on the top of the building, providing complete protection for transceivers, receivers, etc. Coaxial thunder arrestor-- both connector ports are equally protected-can be installed in any orientation. the ground lug on the housing provides excellent grounding. Brass surge protector-- safety guarantee: the built-in gas-filled arrester element is designed with high safety in mind.