Feature: 1. [User Friendly] Our socket tester provides an easy to understand user experience with voice broadcast and simple information displayed on the screen. 2. [Leakage Protection] When the RCD button is pressed and it trips, it indicates that the leakage protection is functioning properly. If it does not trip, please contact a professional to inspect the circuit. 3. [10A and 16A Universal] Our tester can be used to detect both 10A small appliances and 16A large appliances outlets. Simply rotate the pin for easy switching. 4. [Backlit LCD Screen] The LCD screen is equipped with a backlit, allowing clear visibility of the numerical values even in dimly lit environments. 5. [Easy to Use] Simply insert the tester into a standard outlet, and within approximately 3 seconds, it will audibly report the test results in simple English. Specification: Item Type: Socket Tester Material: ABS Model: AC10+ Socket Type: 10A 16A Socket Universal Screen: LCD with Backlit Battery: 2 x AAA Batteries (Not Included). Package List: 1 x Socket Tester 1 x User Manual