CURRENT/VOLTAGE METER; No. of Digits / Alpha:4-1/2; Meter Function:DC Voltage; Meter Range:-2V to +2V / -20V to +20V; Digit Height:10.2mm; Panel Cutout Height:21.29mm; Panel Cutout Width:33.93mm; Supply Voltage Min:7.5VDC ;RoHS Compliant: Yes