Every E&I technician should have one of these in their pocket or tool bag:

“The Fluke 2AC is the latest addition to the VoltAlert ac non-contact voltage tester family from Fluke and is designed to be pocket-sized and easy to use. The 2AC tests for energized circuits and defective grounds, whether it’s for an electrician on the factory floor or the do-it-yourself around the house. The tip of the pocket-sized tester will glow red when within close proximity of an outlet, terminal strip, or power cord where voltage is present.

The 2AC has a voltage detection from 90 to 1000 V AC, suitable for a wide range of residential, commercial, and industrial industries. Always on, using special low power circuitry to sustain battery life and ensure your 2AC is always ready.

The Innovative ‘Battery Check’ button function ensures the battery is in good condition. Fluke Corporation is the world leader in the manufacture, distribution and service of electronic test tools and software. From industrial electronic installation, maintenance and service, to calibration and quality control, Fluke tools help keep business and industry around the globe up and running.” [Fluke]

Don’t settle for a cheap imitation, buy a genuine Fluke VoltAlert™ Electrical Tester available from Amazon. [Affiliate Link]