Features: This outlet tester is rapidly detecting whether the socket wire connection is correct or not; This outlet tester with display screen helps you measure socket voltage, leakage voltage and current and display it clearly on the display screen. Widely used for electric maintenance testing, office sockets testing, power strips testing and wall sockets testing in school, laboratory, factory and other social field. Lightweight and easy to carry; It helps you in testing problems with sockets. Specifications: Material:ABS Color:Black Size:Approx.65x62x58mm/0.21x0.2x0.19in Option Type:HT107B,HT107D,HT107E; Working Voltage:90-250V/45-65Hz; RCD Current:>30mA RCD Working Voltage:220V±20V Package Includes: 1xOutlet Tester 1xManual note: Please allow 1-2cm errors due to manual measurement,please 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.