SOCKET WIRING SEQUENCE TEST: Insert the tester into a standard three-pin power socket. If a wiring sequence error is detected, the orange backlight illuminate to indicate a wiring error. Refer to thedisplay to identify the specific type of wiring error. DATA RETENTION: After inserting into the socket, the data automatically locks after three seconds. Once locked, press the unlock button to release the data. LEAKAGE SWITCH DETECTION: Insert the tester into a three-pin socket, ensuring that the display indicates correct wiring. Press and hold the RCD button for more than 2 seconds. In this case, a functioning residual current device (RCD) should trip, displaying the ripping time. The button indicator willflash,indicating the completion of the process. If it does not trip, it suggests a malfunction in the residual current device. AUTOMATIC SHUTDOWN: If there is no operation within 5 minutes of powering on, the instrument automatically shut down. PRODUCT SAFETY AND RELIABILITY: Rated safety level CAT II 300V ensures safe usage and quality assurance. HIGH-DEFINITION BACKLIT LARGE SCREEN: The high-definition backlit display screen ensures clear visibility of measurement content even in dimenvironments, providing a clear and easily understandable view of the test results. WIDELY APPLICABLE SCENARIOS: Can be used to inspect the safety of socket wiring in homes, offices, shopping malls, and other places. Voltage range: AC 30-260V/45-65Hz, (2.0%+2) Leakage voltage range: 0-99V/45-65Hz, (2.0%+2) Trip time test: 10-1000mS, (2.0%+4) RCD test: 30mA Voltage measurement (48V-250V/45-65Hz): Yes LCD display: Yes Backlight: Yes Socket connection detection: 1.10-1000mS, (2.0%+4) 2. Open ground 3. Open neutral 4. Open live 5. Live wire and ground wire reverse 6. Live wire and neutral wire reverse 7. Live wire and ground wire reverse, missing ground wirePower supply: 2x1.5V AAA batteries(included)Safety rating EN61010-1,-2-030; EN61326-1, CAT II 300VVoltage: AC30-260VPlug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so onColour:BlackMaterial:ABS Package Contents:1 x Socket Tester Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.