Features: 1. Upgraded Electric Socket Tester - Advanced socket tester for rapidly detecting whether the socket's wire connection is correct. Compact size, lightweight, and easy to use. Equipped with voltage backlight LCD display for testing voltage. 2. Plug and Play - This plug socket tester features an RCD/GFCI test button. One-click operation to check the working status of the leakage protector. Helps protect against the risk of electric shock. 3. LED Light Patterns - Clear indicators show the socket's status for easy interpretation: Correct, Open Ground, Open Neutral, Live/Neutral Reverse, Live/Ground Reverse, Missing Ground. 4. Bright LED Display - Light patterns are clearly labeled on the device. Red LED indicators are visible even in strong sunlight and can be used in dark environments for quick reading. 5. Wide Application - Suitable for electrical maintenance testing, office sockets, power strips, and wall sockets in schools, laboratories, factories, and other settings. Ideal for home inspections and safety checks, saving time in identifying socket issues. Notice: 1. Actual color may vary slightly due to monitor and lighting differences. Allow 1-3 cm deviation due to manual measurement. 2. Some items may include a logo. Please contact us if you have concerns. Specification: Test socket voltage range: AC 48-250V GFCI test: >5mA Voltage measurement (48V~250V/45-65Hz): Yes LCD display: Yes Backlight: Yes Socket wiring test: Correct wiring Missing ground Missing neutral Missing wire Live/ground reverse Live/neutral reverse Phase and ground fault with missing ground Size: 65mm x 62mm x 58mm Includes: 1 x Outlet Tester