The DUT at which a continuity test is carried out in the course of an electrical safety test by a safety test device or a test system must be safely connected. Only then can this internal test be performed. The continuity test shows whether electric current flows and whether the DUT is properly connected. As a rule this safety test is performed with 24 / 22 V DC.

SPS electronic safety tester and function tester offer a number of necessary features and standard tests. Included e.g. are: high voltage test with ergonomically shaped test pistol made of shatterproof plastic and the impulse winding test. But also line leakage test, function test, insulation test and earth bond test are categories of compact tester or multi tester with x-fold testing by SPS.

SPS electronic, no. 1 of the industry with roots in Schwäbisch Hall in the country of Baden-Württemberg and a branch in Twist in Lower Saxony is, due to its worldwide dealer network, always within the customer's reach. SPS repeatedly receives confirmation of a high level customer satisfaction also because of its extensive range of accessories in safety test technique. The company is certified according to ISO 9001.