What is socket tester?

A socket tester is a device used to conduct tests on electrical wall sockets to determine if they are functioning correctly. It is a simple device that plugs into a socket and displays information about the condition of the wiring in the socket. The device is used to test the voltage, polarity, and earth connections of the socket. It can also be used to check if the socket is wired correctly and to identify any faults or inconsistencies in the wiring. Socket testers are commonly used by electricians, homeowners, and DIY enthusiasts to ensure the safe and proper functioning of electrical installations. They are affordable, easy to use, and come in a range of models to suit different requirements.