ANENG AC28Digital Smart Socket Tester Voltage Test Socket Detector US/EUPlug Ground Zero Line Phase Check Rcd NCV test 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: Brand ANENG Model AC28 Smart Socket Tester Product name Socket polarity detector Applicable range 250V 50Hz/60Hz Work temperature 0C~40C RCD current RCD 30mA Applicable socket EU/US Specifications Product weight 49g LCD screen voltage measurement Applicable range 250V 50Hz/60Hz Package List: 1 * AC28EU/US Conversion plug (according to choice) 1 * Color box package