Feature:1. SIMPLE OPERATION: Simply insert the tester into an already powered three-pin socket. The socket wiring condition and AC voltage can be easily determined based on the information displayed on the instrument screen.2. SOCKET WIRING SEQUENCE TEST: Insert the tester into a standard three-pin power socket. If a wiring sequence error is detected, the orange backlight will illuminate to indicate a wiring error. Refer to the display to identify the specific type of wiring error.3. DATA RETENTION: After inserting into the socket, the data automatically locks after three seconds. Once locked, press the unlock button to release the data.4. 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 tripping process. If it does not trip, it suggests a malfunction in the residual current device.5. AUTOMATIC SHUTDOWN: If there is no operation within 5 minutes of powering on, the instrument will automatically shut down.Specification:Features:SIMPLE OPERATION: Simply insert the tester into an already powered three-pin socket. The socket wiring condition and AC voltage can be easily determined based on the information displayed on the instrument screen.SOCKET WIRING SEQUENCE TEST: Insert the tester into a standard three-pin power socket. If a wiring sequence error is detected, the orange backlight will illuminate to indicate a wiring error. Refer to the display 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 tripping 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 will 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.Specifications:Model: HT97B / HT97D / HT97E (Optional)Plug: US / EU / UK (Optional)Material: ABSVoltage Range: AC30~260V/45~65Hz, ±(2.0%+2); AC30~260V/45~65Hz, ±(2.0%+2); AC30~260V/45~65Hz, ±(2.0%+2)Leakage Voltage Range: 0~99V/45~65Hz, ±(2.0%+2); 0~99V/45~65Hz, ±(2.0%+2); 0~99V/45~65Hz, ±(2.0%+2)Trip Time Test: 10-1000mS, ±(2.0%+4); 10-1000mS, ±(2.0%+4); 10-1000mS, ±(2.0%+4)GFCI Test: 5mA (HT97B)RCD Test: 30mA (HT97D & HT97E)Voltage Measurement (48V~250V/45~65Hz): YesLCD Display: YesBacklight: YesSocket Connection Detection: 1. 10-1000mS, ±(2.0%+4)2. Open ground3. Open neutral4. Open live5. Live wire and ground wire reverse6. Live wire and neutral wire reverse7. Live wire and ground wire reverse, missing ground wirePower Supply: 2 * 1.5V AAA batteries (Not included)Safety Rating: EN61010-1, -2-030; EN61326-1, CAT II 300VItem Size: 67 * 65 * 75mm / 2.63 * 2.56 * 2.95inItem Weight: 103g / 3.63ozPackage Weight: 138g / 4.86ozPackage Size: 7.5 * 7.5 * 8cm / 2.95 * 2.95 * 3.15inPackage List:1 * Socket Tester1 * User Manual (English)Package List:Package List:1 * Socket Tester1 * User Manual (English)