1 Gossen Metrawatt tester, model Profitest Mxtra IQ tester for testing the effectiveness of protective measures on stationary electrical installations after completion Repair , and extension on the occasion of a repetitive test ( 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 spikes. No original packaging.   Technical characteristics: Measuring category 600V CAT III / 300V CAT IV. Wide range measuring device for all AC and AC networks with voltages from 65 to 500 V and frequencies from 15,4 to 420 Hz. Grinding and grid impedance measurement with DC pre-magnetization. Testing of fault current protection devices and special RCD protection switches (Selective S, SRCDs, PRCDs, Schukomat, Sidos, Type G/R, AC, A, F, B, B+, EV, MI ) Checking error current, USB interface.