Item Type: Solar Charge Controller Material: ABS Weight: Approx. 155g 5.5oz Product Size: Approx. 13.3 x 6.8 x 3 cm 5.2 x 2.7 x 1.2 inches Rated Voltage: 12V (420W) 24V (840W) automatic (12V is suitable for 18V solar panels, 24V is suitable for 36V solar panels) Rated Current: 30A Charging Mode: 5-level function: Charging a 12V 24V battery, ultra-wide adjustable charging and discharging. Self-consumption: <10 mA. Overcharge protection: 14.4V 28.8V. Charge recovery voltage: 13.2V 25.2V. Over-discharge protection: 10.7V 21.4V Over-discharge recovery: 12.6V 25.2V 1. PWM solar charge controller, with dual reverse current protection, low heat generation. 2. Built-in short-circuit protection, open-circuit protection, reverse polarity protection, overload protection. 3. Auto-focus MPPT tracking charging, high charging efficiency, two-way focusing tracking. 4. With overheating, overcurrent, circuit breaker protection, troubleshooting and automatic controller recovery. 5. Two-way MOS tube anti-backflow circuit, high power charging mode, safe and reliable. 6. R0 solar charging DC connector, R0 DC lamp output DC connector, easy to connect and use. KLB Store