The Sealey TA121 is a mini fuse current tester designed for fast and accurate electrical diagnostics on automotive circuits. This compact diagnostic tool plugs directly into a vehicle's fuse board, allowing technicians to measure current draw safely without the need to disconnect or remove fuses from the circuit. Ideal for automotive electricians and mobile mechanics working on car and commercial vehicle electrical systems, the TA121 makes fault-finding straightforward and efficient. The large LCD display provides clear readings even in poorly lit workshop conditions, whilst the 0-20A measurement range covers most standard automotive circuits at voltages up to 48V. With ±2% accuracy and weighing just 70g, this mini fuse tester is a practical addition to any vehicle diagnostic toolkit. The tool's direct plug-in design eliminates the risk of incorrect connections and speeds up the testing process, making it particularly useful for tracing parasitic battery drains and verifying circuit lo