Possess wide working voltage, the voltage range of 24v water pump is 18v‑45v, the best working voltage is about 36v Submersible pump come with built‑in MPPT controller, can make full use of solar energy Provide over‑voltage protection/under‑voltage protection, if the voltage is too high or too low, the pump will automatically stop working, and then check the voltage every 5 minutes. When the voltage returns to normal, it will automatically start to work The pump can be directly connected to the solar panel without the need to install batteries in the sun, very practical Stainless steel material have corrosion resistance, heat resistance, high and ultra‑low temperature resistance, Weight: 5.621787681 pounds, Manufacturer: Luqeeg