Features Solar lawn light control panel, dedicated to 3.7V lithium battery. With over-charge and over-discharge protection and three-levels switch (light off, full power, low power). Charging during the day can be illuminated at night, automatic circulation without human intervention. Great workmanship and clear connection, which can provide stable performance. High quality of the product can make sure the durability and stability of the control panel. 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