... energy saving;high efficiency;no spark,low working voltage,environment protection,no vibration, no waste,ect. 38-16 DC solar water pumpFeature ... waterproof and but NOT submersibleReliable performance: works quietly;energy saving;high efficiency; safe, no spark; no waste; no virbration;very ... not operate for long time when there is no water in the pump. Power supply: It can be powered directly by ...