Features: New Waterproof Car Motorcycle LED DC Digital Display Voltmeter The meter has easy to read and connect to your 12 /24 Volt System Used to monitor the storage-battery voltage With reverse connection protection function (if the wire is reversely connected, the will not be burned to damage) Mainly used to monitor battery voltage and know the running status of the Voltmeter and also can be applied to measuring the voltage of other products With compact Portable Design Specification: 100% brand new!!! Material: ABS, LED Digital display Color: Black LED Color: Red&White/Green&Blue/Red&Blue/Green&Red Input voltage: DC 12V-24V (The alternating current cannot be used) The range of measurement: 5V ~ 30V Interface Type: Connection of Cathode and Anode Size: approx. 105mm(L) x 42mm(W) Quantity: 1 Set Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-3cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Dual LED Digital Display Voltmeter 4 x Screws 4 x Insulated Terminals