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: ABS Voltage 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): 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 wire Power Supply: 2 * 1.5V AAA batteries (Not included) Safety Rating: EN61010-1, -2-030; EN61326-1, CAT II 300V Item Size: 67 * 65 * 75mm / 2.63 * 2.56 * 2.95in Item Weight: 103g / 3.63oz Package Weight: 138g / 4.86oz Package Size: 7.5 * 7.5 * 8cm / 2.95 * 2.95 * 3.15in Package List: 1 * Socket Tester 1 * User Manual (English) Package List: Package List: 1 * Socket Tester 1 * User Manual (English)