8.25mm, 3.5 Digit, Sub-miniature. One piece snap-in design Low power consumption Auto-zero, auto-polarity Programmable decimal points LED backlight Functions as ammeter when used with a 200mV digital current shunt 3 to 7.5Vdc power supply to measure an input voltage referenced to meter supply ground or 6 to 15Vdc to measure an input voltage which is floating with respect to meter supply Single-in-line connection Temperature stability zero drift 250 ppm/°C. Backlighting:. DPM 2AS-BL 15mA @ 5Vdc (typ.)