Cutting in metal in a sustainable way, a solid frame and an alternative model of opening made of metal. 1. Dual circuit to prevent MOS backflow, low heat generation. 2. Large LCD display with backlight, clearly displays system operation information and indicates status and data, convenient for switching modes and parameter configuration. 3. Adjustable charging and discharging parameters, with memory shutdown function. Automatically recognize 12V/24V system voltage. 4. Safe to use, built-in short circuit protection, dilation protection, reverse connection protection, overcurrent protection. It can be used in home, industry, commerce, etc. 5. On the wiring terminals there are appropriate icon markings, which are used to connect batteries, solar panels and DC loads. Install it in a well-ventilated area. - Inner mesh panties Item Type: Solar Charging Controller Rated voltage: 12 V/24 V battery voltage Maximum charging/discharge current: 30A Solar Panel Input Voltage Range: Up to 18-450W/36V-900W Charging mode: PWM Overvoltage protection: 17V.34V Full charge off: 13,7 V/27,4 V Switching off at a voltage: 10,5 V/21 V Excessive discharge recovery voltage: 12,2V/24,4V List of packages: 1 x Solar Charging Controller 1 x Manual 1 x Wire Connector