Feature: 1. INFLATABLE SURGE DISCHARGER ELEMENT: Built in inflatable surge discharger element that discharges and grounds the surge when the surge voltage exceeds a specified level. 2. REPEATABLE SURGE DISCHARGE AND RECOVERY: UHF coaxial lightning surge arrester can repeat the surge discharge and recovery action as needed. Practically no replacement is required. 3. EASY TO INSTALL: Coaxial lightning surge arrester has a 1/4 wavelength short circuit principle and provides good lightning protection. Simple structure, robust and easy to install. 4. COAXIAL CONSTRUCTION: 400W UHF lightning surge arrester with coaxial construction ensures excellent HF performance, wide bandwidth, low loss and VSWR. 5. CONVENIENT TO USE: If the male to female lightning surge arrester components are damaged, they can be easily replaced with new components and are very easy to use. Specification: Item Type: ​UHF Coaxial Lightning Surge Arrester Material: Metal Connector: UHF UHF Frequency Range: DC-2500MHz Voltage VSWR: ≤1.1 Peak Power: 400W Voltage At The Beginning Of Discharge: DC 90 230 350V±15%. Package List: 1 x UHF Coaxial Lightning Surge Arrester 1 x Instruction Book Note: Please allow some error due to manual measurement.