Digital Voltmeter Dc 4.5v to 30v Digital Voltmeter Voltage Panel Meter

Feature: Reverse Connect Protection Range: DC4.5-30V (No need aditional power) Display: Three 0.56'' LED digital tube Display color: RED/ BLUE /GREN Refresh rate: about 500mS / times Input: DC voltage (<2 times the range) Resolution: 1% +1 digit Power Supply: DC4.5-30V (with the input common-line) Operating temperature: -10°c~ 65°c