Features Wide Compatibility: Automatically detects 12V, 24V, 36V, or 48V DC system voltage, making it easy to use with various battery types and configurations Comprehensive System Protection: Equipped with self-diagnosis to guard against short circuits, overloads, and overheating, ensuring safe operation for your solar system High-Efficiency PWM Design: Utilizes advanced PWM technology for up to 99% tracking efficiency and 98% peak conversion, providing optimal charging even in low light conditions 4-Stage Safe Charging: Features batch, boost, float, and equalizing charging modes for fast and efficient battery charging, preventing overheating and gas buildup Durable Material Construction: Crafted from premium ABS and aluminum alloy, this controller offers exceptional strength, wear resistance, and longevity for reliable performance Features: 1、Wide Compatibility: Automatically detect 12V, 24V, 36V or 48V DC system voltage, compatible with a variety of battery types, easy to use. 2、Comprehensive System Protection: Aimed to defend your system, self diagnosis capability of the controller can evaluate and defend PV array short circuit; PV overcurrent; load overload; load short circuit; PV reverse connection; battery reverse connection; overheating. 3、PWM Design: Innovative PWM technology, the tracking efficiency is as high as 99%, and the peak conversion efficiency is as high as 98%. It is the best charging solution even in cloudy environments. 4、4 Stage Safe Charging: With 4 stage charging function, batch charging, boost charging, float charging and equalizing charging, the controller can achieve fast, efficient and safe battery charging, avoiding excessive gas precipitation or battery overheating. 5、ABS, Aluminum Alloy Material: Made of premium ABS, aluminum alloy material, this controller is strong and , wear resistance, and resistance, comes with a long life pan. Specification: Item Type: Solar Charge Controller Material: ABS, Aluminum Alloy Input Rated Voltage: DC 12V, 24V, 36V, 48V (Automatic Identification) Maximum PV Voltage: 100V Package List: 1 x Solar Charge Controller 1 x Manual Note: Please read the manual carefully before use. Package List 1 x Solar Charge Controller 1 x Manual