QUILLE Socket Tester Mains Outlet with LCD Display Neutral Live Earth Wire Testing RCD Test UK Plug

【SEVEN WIRING CONDITIONS】 - Correct, missing earth / neutral / live, live earth reverse, live neutral reverse, neutral earth reverse, missing earth, seven wiring patterns help you rapidly detect whether the socket's wire connection is correct or not 【RCD & GFCI TESTING】 - Residual Current Operated Protective Device and Ground Fault Circuit Interrupter assist you to be aware of whether the power leak-proof protection works well or not, allowing you to protect your security against the risk of electric shock 【VOLTAGE MEASUREMENT】 - Perfect for detecting the stability of real-time voltage at home or factory outlets - accuracy (2.0%+2V), LCD display shows large white characters with backlight, making it easy to view even in dimly lit places 【EASY TO USE】 - Plug the mains tester in any doubtful sockets and the clear LED indication displays trustworthy results straight away, which saves you much time and improves efficiency in checking every socket 【SAFE & PRACTICAL】 - Compliant with CE CAT.II 600V RoHS safety standard, compact design is widely used in the school, home, laboratory, factory, office and other social fields; We offer you an 18-month and a 30-day money-back guarantee and will be pleased to help with a replacement or refund