Specification: Item Type: Solar Charge Controller Material: ABS Color: As shown in the picture Product Size: Approx. 13.5x7x3.2cm / 5.3x2.8x1.3in Weight: Approx.152g/5.4oz Rated Voltage: 12V 24V automatic (12V is suitable for 18V solar panels, 24V is suitable for 36V solar panels) Rated Current: 60A Display: LCD screen Self-Consumption: <10MA Working Temperature: -35-60 The regulator is suitable for batteries: OPEN, AGM, GEL How to Use Connect the positive and negative poles of the battery to the controller, and the controller will automatically detect the battery voltage and connect the solar panel to the controller. Package List: 1 x Solar Charge Controller 1 x Chinese and English Instruction Note: 1. Please allow 12in error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.