3pcs Blue 0.56 Inch Mini Digital Voltmeter DC 4.5V To 30V Digital Voltmeter Voltage Panel Meter For

Description: ? This DC Voltage Meter with DC4.5-30V range. It is easy to read, install and use And it 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 Mini LED display 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) Minimum Resolution:0.01V(<10V)/0.1V(>10V) Resolution:1%&pm;1digit Working Temperature:-20a??~65a?? Size: Approx. 48mm x 29mm x 22mm(L*W*H) Hole Size: Approx.46*27mm Current Consumption:<23mA LED Color: Blue ? Package included: ? 3 x Digital Voltmeter