shockley Mini Digital Voltmeter 0.56" 3 Wire Digital LED Voltmeter DC 0-100V (2 Piece) Voltmeter  (Digital)

0.56 Inch Digital Voltmeter 3 Wires DC 0V to 100V LED Display Voltage Meter Voltage for 6V 12V 24V Car Description : Three-wire ultra-low cost, high precision to meet most application requirements. Low starting working voltage, red minimum 4.5V, green minimum 5.0V, blue minimum 5.0V. Reverse Protection, Anti-Burn Specifications : Measuring range : 0.00V-100.0V Power supply range : (Red DC 4.50-30.0V) (green DC 4.70-30.0V) (blue DC 5.00-30.0V) maximum input : DC30.0V may be permanently broken Tolerance : ± 1% error is greater than or equal to 10V ± 0.3V Error less than 10V ± 0.10 Input impedance : Greater than 100K ohm Working current : (red <23mA) (green <18mA) (blue <13mA) Refresh speed : about 300mS Once display : three 0.56 LED digital tubes lead length : 20 cm Size : 48x29x22mm (LxWxH) mounting holes : 46x27mm Net weight : 19g Net weight : 26g Working temperature : -10 degree Celsius to 65 degree Celsius