Features:1. Three-voltage automatic identification: 3.7V/7.4V/11.1V three-voltage automatic identification, with power deficit activation function.2. Three lighting modes: normally open mode, lighting control mode (1 - 13 hours), lighting control mode, which can be selected according to actual needs.3. Multiple circuit protection: short circuit protection, reverse polarity, overload protection, undervoltage protection, safe to use.4. Overload short circuit protection: 1.5 times rated current, shutdown after a delay of 5 minutes, automatic detection and recovery after 5 minutes; 3 times rated current, short circuit protection shuts down.5. Wide Application: The solar lamp controller is suitable for solar integrated street lighting modification or repair, as well as circuit control solar lawn light, solar floor light, solar spotlights, etc. Description:The solar lamp controller supports automatic identification of three voltages 3.7V/7.4V/11.1V with multiple circuit protections, suitable for modification or repair of solar integrated street light, as well as circuit control of solar lawn lights, solar floor lights, solar spotlights, etc. Specifications:Size: 61*36.8mm Charging Mode: PWMPrated Current: 3A Input Withstand Voltage: 3Sle; 30V; 5S le; 50V Package Included:1pc*Solar Lamp ControllerNotes:1. Please allow 0-1 inch error due to manual measurement. Thank you for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object.