• Torque display, "OK" or "NG" judgment, control and data processing can be performed with built-in micro computer. • Micro computer displays torque, judges, "OK" or "NG", controls signal and transfers data of each sensor up to 4 sensors in the nutrunners. • The judgment result of "OK" or "NG" can be transmitted to lamp or external output. • Data can be downloaded to PC or printer. • The software can easily be modified to meet various requirements.