1.Multi-Function Process Calibrator 2.32 function keys and numeric keys 3.Display ... 4.224*172*59mm 5.auto range I.Multi-Function Process CalibratorII.Brief Introduction1. Measure V, mA, Ω, frequency, temperature, 40000 reading ... % + 100.1% + 100.05Hz0.5Hz2Hz0.3% + 1°C Multi-Function Process Calibrator