Description: 12-24V LED Digital Display Voltmeter Voltage Gauge with On Off Switch Car/Motorcycle/Boat LED DC digital display voltmeter Comes with LED illuminated switch, ready to use, safe and energy-saving. LED voltmeter displays the current battery voltage; can be readily detected voltage conditions to prevent from accidents. ABS environmental protection material; high temperature resistance and fire-retardant. safe, durable, longer service life Specification: LED voltmeter, shows the current battery voltage, may at any time, to detect the voltage to prevent the accident Switch control CE/ROHS/FCC approved Color: Black Material: ABS Plastic LED Color: Red Input voltage: DC12V-24V The Range Of Measurement: 6-30V Cable length: approx. 1.5m/4.92ft Size(LxWxH): approx.6.2*6.1*3.3cm/2.44x2.40x1.29inch Package Includes: 1 Piece LED Voltmeter Voltage Meter 1 Piece Plastic Mount Bracket Note: Mount screws are not included The maximum input voltage can not be over 30V, otherwise it may be burned