Low cost, high accuracy to meet most application requirements. High precision with reverse polarity protection, reverse does not burn. Measuring range: 0.00V-30.0V Power Range: Red DC4.50-30.0V, green DC4.70-30.0V, blue DC5.00-30.0V Maximum input: DC30.0V. Note: The input voltage is above 30V possible permanent damage! Tolerance: 1%; greater than or equal 10V error is 0.3V; the error is less than 0.10 10V Input impedance: Greater than 100K Europe Current: red Less than 23mA, green Less than 18mA, blue Less than 13mA Refresh rate: about 300mS time Display: three 0.36inch LED Digital tube Display color: red, green, blue optional Lead Length: 15cm Including installation ear length: 33mm Mounting holes: Pitch: 28mm, Aperture: 2.8mm Working temperature: -10 to 65 Degrees Celsius Test voltage is positive: White The operating voltage of the positive plate: Red Common negative: Black Please note that different colors, measuring voltage range is not the same, please choose the right. Note: Installation guide not included, Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Photo Color Material:plastic Package Contents: 10 x 3 Wires Mini Digital Voltmeter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.