ITEM NAME:Car Boat Motorhome USB Charger Port+Voltmeter Dust Cap Description: - Works great as a replacement or extra dual USB charge in car switch panel, with LED light indicator Voltmeter. - Over-heated, over-current, over-charging protection, charging will be automatically stop when battery is full, easy to use and install. - Compact design 2in1 Car USB Charger and Voltmeter, great for charging and voltage checking purpose. - Compatible with popular mobile devices USB 2.0,any device including digital cameras, PDAs, mobile phones and USB accessories - Can be used for cars,motorcycles,trucks,SUV, ATVs,boats,yacht,etc. Specification: - Indicator light color: Red for Voltmeter - Input Voltage: DC 12~24V - Supports all mobile phones, tablets, GPS navigation systems,cameras,PDAs, and other mobile electronic USB devices power charging - Case color: Black - Input voltage: DC 12 - 24V - Measure voltage: 8 ~ 25V - Output voltage: DC 5V - Output current: 2.1A High Current - Material: ABS - 22W - IP66 grade waterproof - Working temperature: -20℃~80℃ - Size of Drill Hole: approx.2.9cm/1.14inch Package Included: 1 Piece USB Charger Voltage Meter 2 Pieces Terminals.Can be used for cars,motorcycles,trucks,SUV, ATVs,boats,yacht,etc. - Case color: Black. - Over-heated, over-current, over-charging protection, charging will be automatically stop when battery is full, easy to use and install.