20pcs Solar Lamp Circuit Board Solar Controller Module for Road Stud Light Key Benefits **Reliable power management** – Converts solar energy efficiently to keep road stud lights operating through night and cloudy conditions. **Extended service life** – Built‑in over‑charge and over‑discharge protection prevents battery damage and reduces maintenance frequency. **Easy integration** – Standard size and mounting holes match common road stud light housings, allowing quick replacement without special tools. Product Highlights **Function**: Solar charge controller with automatic load detection, night‑time illumination control, and voltage regulation. **Compatibility**: Designed for typical 12 V road stud LED modules and compatible with most low‑voltage solar panels used in traffic safety lighting. **Size**: Compact PCB measuring 55 mm by 35 mm, thickness 3 mm, fits within standard stud housing dimensions. **Material**: ‑temperature resistant FR‑4 substrate with tin‑lead solder joints for durability in outdoor environments. **Performance**: Supports solar panels up to 20 W, delivers stable 12 V output, and includes LED indicator for charging status. Typical Applications 1. **Highway and roadway safety** – Install the controller modules in solar‑powered reflective studs to provide consistent illumination along lanes and curves. 2. **Parking lot guidance** – Use the modules to power low‑profile stud lights that mark parking spaces and pedestrian pathways, reducing reliance on grid electricity. 3. **Rural and off‑grid roads** – Deploy the controllers in remote locations where conventional power is unavailable, ensuring continuous visibility for drivers. Why Choose This Module **Simple installation** – Pre‑drilled mounting holes align with standard stud brackets, and wiring connections are clearly labeled for rapid setup. **Cost‑effective maintenance** – Intelligent charge management extends battery life, lowering the total cost of ownership. **Robust construction** – Weather‑proof design tolerates temperature fluctuations and exposure to rain, dust, and UV radiation. Package Includes 20 solar lamp circuit board modules, each fully tested for functional integrity. These controller modules provide a dependable solution for renewable‑energy road lighting, delivering consistent performance while minimizing upkeep.