0.56inch Red Light DC 0-100V Panel Meter Digital Voltmeter Display: Three digit 0.56" LED Highest input:DC 100V (higher than 100 has the risk of burn up) Minimum input:DC 0V(below than 0V,measurement is inaccurate or does not show) This DC Voltage Meter with DC 0-100V range. It is easy to read, install and use Measure Voltage: DC 0-100V three-wire access