Features: 1. Industrial microcontroller for setting charge and discharge parameters. 2. Full 3-stage PWM charge management. 3. Built-in protections: overcurrent, short circuit, open circuit, reverse polarity, etc. 4. Large backlit LCD display. 5. Dual MOSFET reverse polarity protection, low heat generation. Package Contents: 1 * Solar Charge Controller 1 * Manual Note: 1. The regulator is only compatible with lead-acid batteries: flooded, AGM, GEL. Not suitable for NiMH, Li-ion, or other batteries. 3. The battery cable should be as short as possible to minimize losses. 4. The charge regulator is only intended for regulating solar modules. Never connect any other charging source to it. 5. The regulator heats up during operation. Please install it in a well-ventilated area.