Detailed Product Description Multi-Function Process Calibrator Brief Introduction1. Measure V, mA, Ω, frequency, temperature, 40000 ... source two functions, show and control in double display5. 32 function keys and numeric keys, setup and modify source value by ... AC40.000V AC300.00V AC400.00mA DC400.00mA AC400.00Ω4.0000kΩ40.000kΩ400.00kΩ4Hz ~ 99.99Hz100Hz ~ 5Hz5kHz ~ 30kHz ...