The Blue Spot Tools Mains Tester Screwdriver (4 x 100mm) is an essential piece of test equipment for any electrician or DIY enthusiast. Designed for safety and reliability, this tool allows you to quickly and accurately identify live circuits, helping to prevent accidents and ensure safe working practices.The tester features a fully insulated plastic handle and blade sheath, providing an extra layer of protection against accidental contact with live parts. At the heart of the device is a neon indicator lamp, housed securely within the handle, which illuminates brightly when it detects the live terminal of an electrical circuit. This clear visual signal makes circuit testing intuitive and foolproof.Key Features & Operation Enhanced Safety: The comprehensive insulation and robust construction are designed to user safety standards. Clear Indication: The integrated neon lamp provides an immediate and unambiguous live circuit warning. Simple to Use: Operation is straightforward simply touch the metal top cap with your finger and place the tip on the terminal you wish to test. Compliant Design: This circuit tester is manufactured to conform with relevant CE and GS standards for electrical safety equipment.Ideal ApplicationsThis mains tester screwdriver is suitable for use on a wide range of domestic and light commercial electrical circuits where the voltage does not exceed 250V AC. It is perfect for tasks such as identifying live wires in sockets, switches, and fuse boxes, or for basic fault-finding in electrical installations. Its compact 100mm length makes it easy to carry in a toolkit or pocket.Trust the Blue Spot Tools Mains Tester Screwdriver for a simple, effective, and safe way to verify the presence of mains voltage before starting any electrical work.