Product Description Blue Sea Systems 1039 – Contura size USB Same beefy 4.8A charging capacity of our FAST USB charger except this guy fits into a Contura rocker switch hole!  Yup!  That unused rocker switch can be turned into something useful.  Should take you no more than 5 minutes between popping your old switch out to quick charging your iPad. With a tight dustproof and waterproof cap, and conformal coated circuit board, this rocker switch-sized USB charger is made to last in the marine environment. Standard 1.45″ x 0.830″ cutout dimensions, means if your rocker switch will fit… this USB charger will fit.  It’s ridiculously easy to install with just two Female Quick Disconnect terminals.  Which you likely already have these handy if you’re replacing a rocker switch with this charger. This USB charger can be used on both 12V and 24V systems and features internal filtering for reduced interference for your electronics. FAST Charge USB Specifications Value Max output current 4.8A (total) Input voltage 9 – 32V dc Output voltage 5V dc /- 5% Parasitic Current Draw 1mA (0.001 Amps) Port Configuration Intelligent Device Recognition Reverse Polarity Protection Yes Thermal Overload Protection Yes