Description: The FY1881 Socket Tester is an essential tool designed for testing the polarity of receptacles, RCD protection, and voltage between LIVE-NEUTRAL and NEUTRAL-GROUND. It is ideal for ensuring the safety and functionality of electrical sockets in various environments such as homes, offices, schools, and industrial settings. Features: Compact and lightweight design for portability. Plug and play operation for ease of use. High precision and reliable performance. Advanced detection of socket wiring polarity and RCD functionality. Integrated RCD test with simple button operation. Comprehensive LCD display showing voltage levels, RCD status, and other indicators. Suitable for use with US plug standards. Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines and so on. Voltage: AC110V Color: As Shown Material: plastic Package Contents: A 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.