Electric Socket Wall Ac Power Outlet Voltage Detector Sensor Tester Pen 90-1000v The Next Generation Ac Non-contact Voltage Testers Are Easy To Use - Just Press The Tip To A Terminal Strip, Outlet, Or Supply Cord. When The Tip Glows Red And The Unit Beeps, You Know There Is Voltage Present. Electricians, Maintenance, Service, Safety Personnel, And Homeowners Can Quickly Test For Energized Circuits In The Workplace Or At Home. A Tool Kit For Home And Electric Industry Uses. Design For Testing Power Cables, Circuit Breakers, Wall Sockets, Junction Boxes, Fuses, Etc Frequency Range: 50 To 500 Hz Test Voltage Range: 90-1000v Ac Safety Rating : Cat Ii 1000v Powered By: 2 X Aaa Batteries (not Included) Just Press The Button, White Led Light Can Be On When There Is Absence Of Voltage Net Weight: 40g Colour:yellow Material:abs Plastic Size:152 X 22 X 17mm Package Contents: 1 * Led Light Voltage Alert Pen(dont Included Battery) Only The Above Package Content, Other Products Are Not Inclu