2Pcs Led Voltage Tester Screwdriver - B&Q

Before testing an unknown circuit, always test the detector on a known live source, such as a functioning electrical outlet. The tester's LED should illuminate when the tip contacts the live side.

This tester is designed to detect AC (Alternating Current) voltage typically found in household electrical systems. It is not designed for DC (Direct Current) voltage.

No, this tester is intended for basic voltage detection in domestic and light electrical testing. It is not rated for high-voltage industrial applications.

The LED indicator illuminates when the tester detects the presence of voltage in a wire or terminal. This clearly signals a live connection.

The non-slip insulated handle provides protection against electric shock during normal use. However, always ensure the tester itself is undamaged and follow safety procedures, such as turning off the power supply when possible.

The magnetic tip helps to hold small screws securely, making it easier to insert or remove them in tight spaces without losing them.

Clean the tester with a dry or slightly damp cloth. Avoid using harsh chemicals or abrasive cleaners that could damage the plastic or insulation.

The tester may be faulty or its battery may be depleted (if applicable, though this model is typically passive). Inspect the tester for damage. If undamaged, test another known live source. If it still doesn't work, replace the tester.

Ensure the tip is making good contact with the conductive part of the wire or terminal. Check the tester for any damage or debris on the tip. Ensure you are testing AC voltage within its specified range.

Do not use the tester if the handle insulation is cracked or compromised, or if the tip is loose. This could lead to electric shock. Discontinue use and replace the tool.