Can you feel the tension in the air? If you do, it's probably too late. A handy pocket tester will save you from similar difficulties, as it will quickly detect the presence of voltage in sockets and other parts of the circuit. The testers belong mainly to trained electricians, but they can also come in handy for experienced amateurs. The testers available at TIPA.EU differ from each other, for example, in the way they signal or the presence of special functions. A large number of models offer a
LED diode as an indication of current, in addition to which they also add, for example, a
conductivity test or
polarity detection. Everything an electrical engineer could want from a tester.