This multi-function mains tester is manufactured, tested and certified to all relevant UK and European standards. Designed to perform essential tests on outlets and small electrical appliances. It features a slotted 3.5mm wide steel blade with an insulated sheath for maximum safety. The tester has a transparent handle with a voltage indicator lamp and is fitted with a strong plastic pocket clip. Its voltage testing range is 70-250V and it is powered by 3 x AG3/LR41 batteries, which are supplied.