1 Gossen Metrawatt tester, model Profitest Mxtra IQ tester for testing the effectiveness of protective measures, at stationary electrical installations after completion, Repair and extension on the occasion of a retest (DGUV requirement 3) The device is fault-free, function is given. Condition: used, optical condition : good, there are slight dirt, and scratches on the top and bottom of the device. The test device is equipped with a power supply, and test tips. A CE marking is available on the test device, power supply and test tips. No original packaging.   Technical characteristics: Measuring category 600V CAT III / 300V CAT IV. Wide range measuring device for all alternating current and three-phase networks with voltages from 65 to 500 V and frequencies from 15,4 to 420 Hz. Grinding and grid impedance measurement with DC premagnetization. Testing of fault current protection devices and special RCD protection switches (selective S, SRDs, PRCDs, Schukomat, Sidos, Type G/R, AC A,F,B,B+,EV,MI ) Checking error current. USB cut.