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The Sealey AK4051 is a DC circuit tester designed for testing electrical circuits from 3 to 48V DC, ideal for automotive diagnostics, low voltage installations, and electronic circuit work. This compact testing tool provides reliable circuit testing and polarity indication for professional auto electricians, technicians and maintenance engineers. The integral spring-loaded pointed probe allows testing through cable insulation without the need to strip wires, saving time and preventing damage to circuits during diagnostic work. Twin LED indicators provide clear visual confirmation of both live circuit presence and polarity, enabling quick and accurate circuit analysis even in poorly lit working conditions. Supplied with a 0.9m cable terminated with an insulated crocodile earth clamp, this tester offers convenient hands-free operation when connected to a ground point. The lightweight design at just 50g makes it highly portable and suitable for inclusion in any automotive or electrical toolkit. Features and Benefits: • Tests DC circuits from 3 to 48V for versatile automotive and electronic applications • Spring-loaded pointed probe penetrates insulation for non-invasive testing • Twin LED indicators show live circuit and polarity status • 0.9m cable with insulated crocodile clamp for secure earthing • Lightweight and compact design for easy portability Specifications: Brand: Sealey Nett Weight: 0.05kg