Gossen Metrawatt M242A TRMS Professional Multimeter MetraHit PRO, TRMS-Multimeter with 12,000 Digits. 20 functions. No Interface. Resolution: +- 12,000 digits, 4-place 3 connector jacks with patented automatic blocking sockets (ABS) TRMS AC and AC / DC function Voltage measurement with a basic accuracy&shy; of +-0.05% (V DC)