Features Safe Use: The solar lamp controller with overcharge and overdischarge protection and three-level switch (lights off, full power, low power). Automatic Cycle: the light can be turned on at night when charging during the day, and the automatic cycle does not require manual intervention Excellent Workmanship: Solar lawn light control board, dedicated to 3.7V lithium battery, with excellent workmanship, clear connection and stable performance. Quality Assurance: High-quality products can ensure the durability and stability of the control panel. Excellent After-sales Service: We provide you with high-quality after-sales service. If you have any questions, please feel free to contact us, and we will deal with it for you as soon as possible. Specification: Item Type: Solar Lamp Controller Module Working Voltage: 3.7V lithium battery Charging Current: <1A Overcharge Protection: 4.25V Over Discharge Protection: 2.8V Light Board: 3.0-3.2V lamp beads in parallel Output Power: <1W Solar Panel: 6V Level: 3 Levels (light off, full power, low power) Working State: The solar panel recharges the battery when the light is on during the day. The LED light panel does not work. When there is no sunlight in the evening, the LED light is automatically turned on, that is, the battery automatically recharges during the day and night. Size: Approx. 36 x 23mm / 1.4 x 0.9in Hole Distance: Approx. 25mm / 1in Package List: 1 x Module1 x User Manual Package List 1 x Module 1 x User Manual