Features: OOTDTY Easy to use. 3 types to select. Small size, lightweight and portable. LED indicator, come with wiring legend, easy to use. One-button intelligent line detection, no electrician required. Specifications: Material: PE- Voltage-: 48V-250V 45-65Hz RCD- Test: More Than 30mA (EU-/UK Plug-) RCD- Working Voltage-: 220V20V GFCI Test: More Than 5mA (US Plug-) GFCI Working Voltage-: 110V20V Voltage- Measurement: 48V250V / 4565Hz Working Environment: 040, 20%75%RH Storage Environment: -1050, 20%80%RH Safety Rating: EN61010-1,-2-030, EN61326-1,CAT II 300V Size: Approx. 62x65x55mm /2.4x2.6x2.2in Plug-: UK/EU-/US Package Includes: 1x Outlet Tester Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.