0.56 inch 0.56" DC 0.000V-100.0V 4 Digit LED Display Voltmeter Mini Digital Voltage Meter Volt Tester Red/Green/Blue DC 4-30V

Measuring range: DC 0.000V-100.0V
Operating voltage: 4-30V (recommended range 5V-12V)
Refresh rate: 1 times / sec
Test accuracy: 0.3% (maximum error = range X0.003)
Internal resistance of the meter: 130K
Opening size: 57.8*26MM
Shell size: 60*29*21.5MM
Display window size: 49*18MM
Weight: 21g