General Description This professional socket tester is ideal for use in your home, office, kitchen, hotel, and other places. It allows you to check the connection polarity and the domestic wiring of the socket, with the results clearly indicated by an LED. Compact and easy to carry, this tester is designed to be used quickly and efficiently. Technical Specifications Material: ABS Plug: EU, UK, US (optional) Working Voltage: 90~250V / 45~65Hz Phase Voltage: 90~250V / 45~65Hz Accuracy: ±(2.0%+2) Leakage Voltage: 0~99V / 45~65Hz RCD Test: >30mA (EU/UK plug) RCD Working Voltage: 220V±20V GFCI Working Voltage: 110V±20V GFCI Test: >5mA (US plug) Working Environment: 0℃~40℃, 20%~75%RH Storage Environment: -10℃~50℃, 20%~80%RH Item Size: 68*65*60mm Item Weight: 74g Package Size: 75 * 70 * 60mm Package Weight: 107g Compatibility & Accessories Compatible with EU, UK, and US sockets. Electrical socket tester included (optional). Installation Simply plug the tester into the socket you want to check. Detection is automatic. Usage This tester is easy to use, just plug it in to get the results. It displays up to 6 different LED light patterns, indicating test results such as correct, open ground, open neutral, and other wiring configurations. Other Information This tester is suitable for various applications, including testing in bright or dark environments, ensuring intuitive and efficient use.