Feature 1. Adopt industrial-grade main control chip 2. Large-screen LCD display, adjustable charging and discharging parameters 3. Complete 3-stage PWM charge management 4. Built-in overcurrent/short circuit protection, open circuit protection, reverse connection protection, all are self-recovery type, do not damage the controller 5. Dual MOS anti-backflow circuit, ultra-low heat generation User's manual 1. The controller adapts automatically to 12V/24V. When installing for the first time, please make sure that the battery has enough voltage so that the controller can recognize the correct battery type. 2.Install the controller as close to the battery as possible to avoid voltage drop caused by too long wires and affect the normal voltage judgment. 3. This controller is only suitable for various lead-acid batteries (including openings, seals, gels, etc.), please do not use other batteries (including lithium batteries, nickel-metal hydride batteries, etc.) 4. The controller can only use photovoltaic panels as the charging source, please do not use DC or other power sources as the charging source. 6. The controller will heat up when it is running. Please install the controller on a flat, well-ventilated surface. Package List 1 x Solar Controller