This professional socket test can be used in your home, office, kitchen, hotel and other places you like, it can help you check the connection polarity and house wiring of the socket, to which the LED lights will show the results. Come on and try it,it won't disappoint.Small in size and easy to carry, you can take it anywhere you want to use it, also can quickly check whether the wire connection of the outlet is correct or not.Easy to Use: You just need to plug it in to check, also with the one-key sensing design, which can save your time. With 6 different LED light patterns indicates different test results, easy to read: correct, open ground, open neutral, live/grd reversed,live/neu reversed, live/grd reversed, missing ground.Wide Applications: Can be used for home, bathroom, kitchen use, also can be sued for electrical maintenance testing and safety inspection. The test results display light indicators can intuitively display the test results, even in the sun or dim environmentcan be used normally, bringing you a better using experience.Working voltage: 90-250VLeakage voltage: 0-99VRCD test 30mADelivery Quantity: 1pcPackage Contents: Only the above package content, other products are not included.Size: 7.5*7.5*7.5cm(Reminder: The size is measured manually, please allow 1-2 cm measurement error)Colour: Black(Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)