Features: ANENG AC28 Smart socket tester are mainly used to detect polarit of power socker and safety of leakage switch .It can quickly and accurately detect the wiring of the socket.Simultaneously,it can test socket voltage and show on the LCD display LED screen. Specifications: BrandANENG ModelAC28 Smart Socket Tester Product nameSocket polarity detector Applicable range250V 50Hz/60Hz Work temperature0C~40C RCD currentRCD 30mA Applicable socketEU/US Specifications Product weight49g LCD screenvoltage measurement Applicable range250V 50Hz/60Hz Package List: 1 * AC28 EU/US Conversion plug(according to choice) hello, guys, thank you for visiting my store.if you want buy more than we listed, please contact us.If you need more this item ,you can contact us.we will give you our best price. Leave your meage!