Socket Tester Circuit Polarity Voltage Automatic Detector Wall Plug Instrumentation Tools

Features: GFCI Test Button: This versatile tester checks power outlet sockets for correct wiring and trip function for GFCI. It tests your protection system to ensure the household electrical safety. It is better to protect your security against the risk of electric shock. Bright LED Display: Light patterns are well labeled on the back of the device itself. The Green LED indicators can be lighted up clearly in strong sunlight. The tester incorporates a built-in light so it can also be used in the dark. It can make you read fast. Easy to Use: It has a large and easy read fault chart. Includes 7 different patterns for you to read: Correct, Ground Open, Neutral Open, Live/NEU Reverse, Live/GRD Reverse, Live Open, Live Ground Reverse Missing Ground. Provides a clear indication that you can quickly understand and use it. Wide Application: In accordance with CE, FCC, RoHS safety standard. As a general measurement tool and widely used in the school, laboratory, factory and other social field. Discounted at only: US$ 11.37