1. 8 DISPLAY PATTERNSDigital Socket Tester With 8 easytoread indicators to indicate the state of the socket, easy to judge: Wiring correct, missing neutral wire, missing earth wire, earth wire is missing, reversed , reversed , lack live wire, live symbol. 2. EBTN LCD DisplayReenwee Super large EBTN LCD greatly enhance the reading experience, very easy to read, even in sunlight or poor light. The testing results are graphically displayed on the screen, very easy to understand, which guides any user to operate easily, saving you a lot of time and improving the efficiency of checking each socket. 3. 3 RESULTS DISPLAYThe large screen can display 3 test results, voltage values (voltage between live and neutral zero and ground), analog bars and wiring status on the screen. 4. SAFETY INSULATION DESIGNThis RCD tester with LCD display adopts insulation design, ensuring no risk of electric shock when using it. The power digital socket tester can quickly detect whether the socket wiring is correct, protecting your safety from the risk of electric shock.