This product is an aquarium DC variable frequency pond pump. The sine wave technology is used to make the pump run almost silently. The power is full, the flow rate is high, and the lift is not attenuated. The frequency conversion saves electricity, and the service life of the pump is better extended. Various ecological modes are applicable to fresh water and land. The water inlet is close to the bottom of the tank to pump water. There is no dead angle in the suction, and the water can be pumped down to 1cm more thoroughly. The internal chip system is equipped with: locked rotor protection, no water protection, overvoltage protection and other functions, multiple safety protections to protect the safety of fish