Solar PWM Controller for Floodlights Key benefits Protects and extends battery life by preventing overcharge, overdischarge, and reverse discharge at night. Works with a wide range of storage batteries for flexible system design and easier replacement or upgrades. Automates floodlight operation based on ambient light and user settings, reducing manual work and saving energy. Improves charging efficiency and protects the solar panel with dedicated antiovercharge circuitry. Retains user settings through power loss or battery depletion, so no reprogramming is required after interruptions. Compatibility VRLA batteries Gel electrolyte GEL batteries Ironbased lithium batteries: 3.2V x 2, 3.2V x 4, 3.7V x 1 Core features PWM charging protection that prevents overcharging and supports safe charging of compatible battery types. Reverse discharge protection that stops battery drain to the solar panel at night. Open circuit antiovercharge protection to safeguard the solar panel from damage. Automatic light sensing: turns floodlight on at sunset based on ambient light, and turns it off at a set time or at sunrise. Nine adjustable light sensitivity levels for precise control of dusk and dawn switching. Ninestage halfpower adjustment to set reduced power or brightness levels for energy saving. Tandem PWM control reduces charging circuit voltage loss to about one fifth of a diodebased design, improving charging efficiency by approximately 3 percent to 16 percent. Nonvolatile memory stores user parameters so settings remain after unexpected power failures or full battery discharge. Typical applications Outdoor solar floodlighting for pathways, parking areas, and building facades where automated dusk to dawn control is required. Remote lighting for cabins, agricultural sites, and offgrid locations where battery protection and efficient charging are critical. Security and perimeter lighting systems that need reliable power management and automatic operation without constant supervision. What makes it stand out Broad battery compatibility simplifies system planning and supports multiple ironbased lithium pack configurations. Flexible lighting control with multiple sensitivity and halfpower options lets installers balance visibility and energy savings. Robust protection features prevent common battery and panel failure modes, while memory retention ensures reliable operation after interruptions. Installation and operation notes Intended for use with compatible storage batteries listed above and appropriate solar panel arrays sized to system requirements. Configure light sensitivity, on time, and halfpower settings during setup to match site conditions and desired energy usage. Follow standard electrical safety practices and wiring diagrams supplied with the controller during installation.