Decdeal Ultra-quiet Mini DC12V 10W Brushless Water Pump with 5.5*2.1mm Female Waterproof Submersible Fountain Aquarium Circulating 400L/H Lift 400cm Small size, high efficiency, low noise. IP68 waterproof grade, totally submersible in the water. 5.5*2.1mm female DC12V for power input. Detachable design, providing convenience for cleaning work. Suitable for aquarium, fountain, car cooling, computer water cooling system and circulation systems. 1 * Filter Features: Package List: 1. Please check the voltage and power of the pump power before power on.2. Please cut off the power before you install/put in/take away the pump from the water; otherwise, the pump can't outlet water due to the air in it. Note: Enameled wire coil and circuit board are sealed by epoxy resin. With a filter, avoiding blocking the inlet. This is a size submersible water pump. It's equipped with a brushless motor providing smooth and quiet operation than a non-brushless water pump. 1 * User Manual(English) 6. When the pump is used in high temperature environment(100°C), it can only be installed with non-diving method. Brushless pump, permanent magnetic rotor, maintenance-free. Specifications: 1 * DC12V Brushless Pump Amphibious pump, you can use it in the water or out of water(follow the installation instruction). 5. Switch on-off the power repeatedly for several times to eliminate the air in the pump impeller and the pipe. 4 rubber suckers on the bottom, can adsorb on the smooth surface and reduce noise and vibration. 4. DO NOT dry burn the pump, otherwise it would be damaged. The coil adopts pure copper enameled wire, lower temperature rise and longer life span. 3. It can be used in the water or other liquids(without particles and impurities); NOT for viscous and acid-base liquids. Suitable for aquarium, fountain, car cooling, computer water cooling system and circulation systems. The coil adopts pure copper enameled wire, lower temperature rise and longer life span. Amphibious pump, you can use it in the water or out of water(follow the installation instruction). Small size, high efficiency, low noise. Enameled wire coil and circuit board are sealed by epoxy resin. Brushless pump, permanent magnetic rotor, maintenance-free.Enameled wire coil and circuit board are sealed by epoxy resin.