Voltage Regulator Solar Panel Tuner 12V DC Kit-Air Water Pumps Hydroponic Oxygen
Designed Specifically for Hydroponic Gardeners. Most «12V» solar panels actually produce 18–22 volts in bright sunshine. The included LM2596 step-down (buck) converter reduces your solar panel’s output to a steady 12 volts, helping your pump run more consistently while reducing unnecessary stress on the motor.