The 2AC is the latest addition to the VoltAlert series of non-contact, easy-to-use voltage testers from Fluke in pocket size. The 2AC checks whether circuits are live and whether there are faulty groundings and is therefore suitable for both professional electricians and DIY enthusiasts. The measuring tip of the pocket-sized voltage tester lights up red when it is close to a socket, terminal strip or a mains cable with voltage applied.