Features [CIRCUIT PROTECTION] Battery overcharge and overdischarge protection, reverse connection, short circuit, overload, anti backflow, TVS arrester protection, etc. [WITH INDICATOR] With 3 colors indicator light, adjustable load mode, and use copper multiple strand soft silicone thick wire. [MULTIPLE FUNCTION] Adjustable discharge mode, normally open output, PV voltage light control function, PV voltage light control and timing function, suitable for acid batteries. [IP65 WATERPROOF] With IP65 protection, waterproof and sealed, can work normally in harsh environments. [ALUMINUM ALLOY] The aluminum alloy shell is sandblasted and oxidized, with strong heat dissipation and corrosion resistance. Specification: Item Type: Smart Solar Controller Colour: Black Shell Material: Aluminum Alloy Applicable Battery Type: Acid Battery Applicable Battery Voltage: 12V Output to Battery Current: 10A (maximum 12A) Charging Principle: Buck MPPT MPPT Efficiency: 99% Solar Panel Input Power: 150W Protection Level: IP65 Package List: 1 x Solar Controller 1 x User Manual Little Tip: Description of Dialing Mode Setting: (1=8 hours, 2=4 hours, 3=2 hours, 4=1 hour, default normally open mode) Package List 1 x Solar Controller 1 x User Manual