1. Equipped with a device to prevent overcharging, over-discharging, short circuits, overloading, and reverse connection of the solar battery 2. Uses the battery's discharge rate characteristics to correct the discharge control 3. Uses a PWM main charging circuit of tandem type to effectively improve charging efficiency 4. The LED indicator shows the battery's current status so that the customer can get information about the batteries 5. Three operating modes can be selected: normally open mode, pure light control mode, and light control plus time control mode This product is equipped to prevent overcharging, over-discharging, short circuits, overloading, and reverse connection of the solar battery. It uses the battery's discharge rate characteristics to correct the discharge control. It also uses a PWM main charging circuit of tandem type to effectively improve charging efficiency. The LED indicator shows the battery's current status so that the customer can get information about the batteries. Three operating modes can be selected: normally open mode, pure light control mode, and light control plus time control mode. Features: Equipped with a device to prevent overcharging, over-discharging, short circuits, overloading, and reverse connection of the solar battery. Uses the battery's discharge rate characteristics to correct the discharge control. Uses a PWM main charging circuit of tandem type to effectively improve charging efficiency. The LED indicator shows the battery's current status so that the customer can get information about the batteries. Three operating modes can be selected: normally open mode, pure light control mode, and light control plus time control mode. Specification: Material: Plastic Color: Black Voltage: 6V/12V Current: 3A Working temperature: -20 ℃~55℃ Protection class: IP30 Product size: Approx. 6.9 * 5.4 cm / 2.7 * 2.1 inches Product weight: Approx. 43 g Package Contents: 1 * Solar Cell Charger Controller