Product Info Select LED colour from drop down menu Select Mounting from drop down menu Black Housing with Dual LED Display Vertical Quick Charge 3.0 USB Charger Monitor voltage and amperage in a single unit Amperage reading of USB charger port accessory draw when connected Black flush mount poly mounting plate for easy installation (if selected) Locking nut included (for mounting without panel) Description Dual Battery Amp + Volt Meter in 5 different colours. Our 12v Battery Monitor is ideally suited to automotive and marine purposes where you want to have an eye on your battery's condition. Dustproof and waterproof face allows the battery gauge to be mounted in a variety of locations in your vehicle. This battery meter has a universal fit to any correctly sized cut out. If you match up the voltage gauge with a mounting panel you can cover over exiting cut outs for a clean factory look. This USB 3.0 Charger is the ideal addition to any vehicle setup. Capable of 12 v and 24 v input, this car charger has a wide variety of uses in the automotive and marine industries. 12v Battery Monitor allows you to track your car or caravans battery voltage with the 12 volt gauge. Ideal as a dual battery volt meter, this voltage gauge works perfectly in many scenarios. Understanding the Amp's a device is drawing allows you to monitor your power consumption and plan your power needs. This Amp meter is commonly used for monitoring fridges and other devices where you want to monitor their power needs at any particular time. Specifications Size Of Cut Out Required for Item: 29mm ⌀Face Surface Size with Panel: 60.5mm (H) x 43mm (W)Face Surface Size without Panel: 36.5mm ⌀Depth: 35mm (Not including terminal length)Mounting Holes: 4mm Counter Sunk (if mounting panel selected)Input Voltage: 12v-24vRating: 0-10ACLICK HERE to view the Sizing Guide.