Feature: 1. [GFCI Function] This electric tester tests GFCI equipment by simulating a ground fault condition, which is suitable for GFI sockets, and confirms the operation of the ground fault protection device. 2. [Voltage Display] This GFCI tester with LED display can help you measure the socket voltage, and it is clearly displayed on the LCD screen for easy observation. 3. [Durable And Sturdy] Compact ergonomics and high impact ABS shell, good shock and compression resistance, compliant with CAT III 300V and CE marking. 4. [Easy To Use] The socket tester can detect open wiring faults through open ground, open heat, open neutral, reverse polarity, and thermal neutral reverse wires. 5. [Range Of Application] This socket tester can detect the most common wiring faults in standard and GFCI power sockets, and also uses standard 3 wire and GFCI protected 220 volt AC sockets. Specification: Item Type: Socket Outlet Tester Material: ABS Model: HT107D Plug: EU Plug 90~250V Uses: Industrial, household Working Voltage: 90~250V/45~65Hz Phase Voltage: 90~250V/45~65Hz Accuracy: ± (2.0%+2) Leakage Voltage Measurement Range: 0~99V/45~65Hz Accuracy: ± (2.0%+2) Working Temperature: 0℃~40℃ Working Humidity: 20%~75%RH Storage Temperature: -10℃~50℃ Storage Humidity: 20%~80%RH Altitude: ≤2000 meters RCD Current: >30mA RCD Working Voltage: 220V±20V GFCI Test: >5mA GFCI Working Voltage: 110V±20V. Package List: 1 x Digital Display Socket Tester 1 x Manual Note: 1. The detection time cannot exceed 5 minutes2. Please be careful not to touch the RCD button during use, so as to avoid accidentally triggering the leakage protection switch and causing unnecessary losses.