1 Gossen Metrawatt Tester Model METCH+ Tester   to verify the effectiveness of protective measures at site festivals, electrical installations after completion, repair, extension and on the occasion of a retest ( DGUV Regulation 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.   Technical characteristics: Measurement category 600 V CAT III / 300 V Cat IV. Wide range measuring device for all AC and AC networks with voltages from 65 to 550 V and frequencies; From 15.4 to 420 Hz. Grinding and grid impedance measurement with DC pre-magnetization. USB interface. Check of fault current protection devices, and special RCD circuit breakers. (selective S, SRCDs, PRCDs; Schukomat, Sidos, type G/R, AC, A, F, B, B+; EV, MI)