Features Wide Compatibility: Automatically detects 12V, 24V, 36V, or 48V DC system voltage, ensuring seamless integration with various battery types for effortless use Comprehensive System Protection: Features self-diagnosis capabilities to safeguard against short circuits, overcurrent, and overheating, enhancing the longevity of your system Advanced PWM Technology: Achieves a tracking efficiency of 99% and peak conversion efficiency of 98%, providing optimal charging performance even in low-light conditions 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