Solar regulator MOS with backflow circuit and low heat production Clear, reliable solar charge regulation for small off grid systems. This controller automatically identifies system voltage and supports both 12V and 24V installations. Its MOSbased backflow circuit minimizes heat generation while preventing reverse current from the battery to the solar panel at night. Key benefits Automatic voltage detection: automatically identifies and configures for 12V or 24V systems for simple installation. Efficient PWM charging: full 3stage PWM management optimizes charging behavior to maintain battery performance and reduce overcharge risk. Low heat operation: MOSbased switching and backflow protection produce less heat than comparable designs, improving reliability under continuous use. Clear wiring and labeling: terminals are marked for battery, solar panel, and load to avoid wiring errors and to improve overall system conversion efficiency. Compact and practical: designed for straightforward integration into small solar generators, lighting systems, and battery charging setups. Main functions and compatibility Function: charge controller with backflow prevention, 3stage PWM charge management, and automatic 12V/24V detection. Compatibility: works with 12V and 24V lead acid battery systems commonly used in small solar setups and portable generators. Performance: designed to improve conversion efficiency and reduce thermal stress through MOSbased circuitry and precise PWM control. Typical applications Off grid lighting: reliable charging control for home or shed lighting powered by a small solar panel and battery. Mobile power for RV or boat: manages charging for 12V or 24V battery banks while preventing night time discharge to the panels. Remote monitoring and sensors: compact controller for small solar arrays that power equipment in remote locations. Technical notes Terminals are clearly marked for battery, solar panel, and load to simplify installation. Controller handles automatic system voltage identification between 12V and 24V and provides threestage PWM charge management. MOSbased backflow circuit reduces heat generation and prevents battery discharge to the panel. This product is suited to installers and DIY users who need a compact, efficient charge controller that is easy to wire and reliable in everyday small solar power applications.