This DC Voltage Meter with DC4.5-30V range.
It is easy to read, install and use
Its is self-powered version and supports Reverse polarity protection.
When the voltage is under 10V, there will 2 readings after decimal point, which mean the accuracy is 0.01 when it is under 10V; when it is above 10v, the accuracy is 0.1
No power supply needed
Measure Voltage: DC 4.5-30V two-wire access
Display: Three digit 0.56" LED
Refresh Speed: Approx.300mS/time
Highest input: DC 30V (higher than 30v has the risk of burn up)
Minimum input: DC 4.5V(below than 4.5V, measurement is inaccurate or does not show)
Size: Approx. 48mm x 29mm x 22mm(L*W*H)
Hole Size: Approx.46*27mm
LED Color: Red