The Duchy Fasteners Mains Tester (140mm) is an essential electrical tool designed for quick and reliable detection of live voltages. Ideal for electricians, technicians, and home DIY enthusiasts, this mains tester quickly identifies live wires, improving safety and efficiency on site. Constructed from durable, high-quality materials for longevity, it features a clear, easy-to-read indicator that confirms live currents instantly. This compact, sturdy tester is ideal for both professional electricians and home users for safely diagnosing and troubleshooting electrical issues. Unlike standard testers found at retailers like Screwfix or Toolstation, Duchy Fasteners offers improved accuracy, reliability, and durability. Suitable for use on domestic appliances, wall sockets, and lighting circuits, this tester ensures maximum safety and convenience, making it a practical addition to any toolkit.