Features:

• Reverse Connect Protection
• Range: DC8.0-30V (No need aditional power)
• Display: Three 0.56 "LED digital tube
• Display color: Blue
• Refresh rate: about 500mS / times
• Input: DC voltage (<2 times the range)
• Resolution: 1% +1 digit
• Power Supply: DC3.0-30V (with the input common-line)
• Operating temperature: -10^.C ~ 65 ^.C

Package Includes:

• 3x  Blue Digital Voltmeter

Key:DC 3.0V-30V  Blue waterproof Digital voltmeter Voltage Panel Meter