1 Gossen METRAWATT: Profitest Model MTECH+ Measuring and testing device for testing the effectiveness of protective measures at site festivals, electrical installations after completion, repair, extension, and on the occasion of a repeat test ( DGUV requirement 3 ). The device is fault-free, function is given. Condition : used, good optical condition. 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 AC and AC networks with voltages from 65 to 500V and frequencies from 15,4 to 420 Hz Grinding and grid impedance measurement with DC premagnetization. Checking fault current (RCD) protection systems. USB interface. 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 ).