12V LED Digital Display Voltmeter Car Motorcycle Voltage Volt Gauge Panel Meter Features: This is a LED display digital DC voltage meter. Portable and lightweight,easy to carry. Many colors display optional. It has reverse connection protection,reverse connection does not burn. LED display,easy to read at night. Specification: Display color: (optional) 2 Wire:red/black 12V Voltage meter: Red light, Yellow light, blue light, green light, white light Measuring voltage:DC4.5V-30.0V Maximum input: DC30.0V. Note: if the input voltage is higher than 30V, permanent damage may occur. Allowable error: ± 1%; when it is greater than or equal to 10V, the error is ± 0.3V; when it is less than 10V, the error is ± 0.10 Input impedance: > 100k Ω Working current: Red Package included: 1 x Digital Voltmeter