The Extech 412355A is an upgraded current and voltage calibrator and meter featuring a super large LCD display and touch keypad for intuitive operation. The LCD clearly displays readings in mA, as a percentage of the 0 to 24mA range, or in mV for voltage ranges, providing versatile readout options .

The 412355A provides an adjustable 0 to 25mA current calibration source and an adjustable 0 to 10V voltage calibration source. Five stored calibration values enable fast, repetitive calibrations without re-entering values each time, significantly improving workflow efficiency .

Applications include setup and calibration of process devices such as transducers, indicators, recorders, and controllers; troubleshooting; field service; and product design. The versatile instrument can be used throughout the process control loop for comprehensive testing and verification .

The unit ships complete with 9V battery, calibration cable with spade lug terminals, carrying case, and 100V-240V AC Universal Adaptor (50/60 Hz) for continuous bench operation. The upgraded model retains the rugged construction expected from Extech instruments while adding enhanced display and control features .