Dual USB charger with intelligent device recognition allows rapid charging of phones, tablets, or other mobile devices. Charges at the speed required by specific devices. Internal filtering for reduced electronic interference. Over temperature protection. Protective dust cap keeps debris and moisture out. Conformal-coated circuit board withstands harsh marine environment. Reverse polarity protection. Maximum output current: 4.8A DC. Mounts in a common 1-1/8" hole.