The SRS SIM970 Quad Digital Voltmeter is designed to simultaneously measure multiple DC voltages, providing long term accuracy, reliability, and efficiency..SRS sim970四数字电压为同时测多个直流电压提供期的准确性可性和效率。The Voltmeter’s SIM900 mainframe can support up to 16 DVM connections. The Unit also features 4 voltage ranges: plusmn;199.999 mV to plusmn;19.9999 V that can automatically or manually selected.电压的SIM900主机最多可以支持16个数据接。置具有电压围±4199.999±19.9999 V的MV可以动或手动择。