PROTECTION RANGE --- Installed on a low-voltage power line for first, second, and third-level Lightning-Pattern protection and surge protection.BASIC PARAMETER OF VOLTAGE --- This house surge protective device is only suitable for DC 420V 40KAEASY TO INSTALL --- This arrester device is made of high quality material, with long serving life, It has the characteristic of stable performance, and easy to installAPPLICATION IN DAILY LIFE --- Protect electric system and on-loading electrical apparatus from thunder and instantaneous over-voltage.Rated voltage: 220vModel: 2p 40kAUc: ~ 420 vUP: less than 2.0KVNumber of poles: 2colour: whiteMaterial: ABSSize: 9x6cmPackage Contents:1 x Arrester DeviceOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.