... featured with high accuracy, resolution and reliability and anti-drop and is integrated with digital display of DC voltage, current signal source ... , 2V, 20V, 200V and 700VDC voltage signal measuring scale.• 2mA, 20mA and 200mA DC current signal measuring scale.• 2V, 20V, ... break-and-make and, diode.• 0.05% dc voltage accuracy• 0.05% dc current accuracy• Frequency measurement to 20kHz• Diode test and ...