Features: 1. Equipped with short-circuit protection, open-circuit protection, reverse polarity protection, and overload protection. 2. 3-stage PWM charge management for improved system efficiency and extended battery lifespan. 3. Large-screen LCD display with clear data readings; adjustable charge and discharge parameters. 4. Dual MOSFET anti-backflow circuit supports high-power charging with low heat generation. 5. Solar charge controller compatible with 12V/24V battery systems; wide voltage range for charge and discharge settings. Specifications: Item Type: Solar Charge Controller Material: PVC Color: As shown in picture Product Dimensions: Approx. 13.3 x 6.8 x 3 cm / 5.2 x 2.7 x 1.2 in Weight: Approx. 145 g / 5.1 oz Rated Voltage: 12V/24V auto-detect (12V compatible with 18V solar panels, 24V compatible with 36V solar panels) Rated Current: 30A Charging Mode: 3-Stage PWM Function: Charges 12V/24V batteries; ultra-wide adjustable charge and discharge settings Self-Consumption: Low power consumption