These AC/DC Voltage Detectors from Santronics are ideal for just about any application. Simply touch the tic tracer"s tip to a terminal strip, outlet, or supply cord, and when the tip glows red, you know that voltage is present. Their compact design makes them easy to transport and keeps them readily available for use on a jobsite. Each tic tester gives you visual or audio indications of power detection, and needs no contact with conductors to be activated.