Aquarium Air Pump,Powerful Silent Oxygen Pump for Fish Tank, Energy-Saving,Fish Tank Air Pump with Single Outletproduct description:Submersible pump, variable frequency water pump, fish tank water pump, adjustable flow rate, mute energy-saving water pumpFeatures:1. The high-efficiency and energy-saving motor with advanced frequency conversion electronic technology saves 65% of energy and is ultra-quiet.2. Suitable for use in sea water and fresh water, without copper elements.3. The wear-resistant ceramic shaft is adopted, and the service life is long.4. With 8/10 gear head flow adjustable function.5. It has the function of 10 minutes timed delay restart after feeding pause.6. With a memory function, it can effectively ensure that each power-off restart is started by the parameters set by the power-off.Scope of application: aquarium fish tanks, garden fountains, flowing water crafts, water-cooled air-conditioning fans, mechanical equipment cooling, etc.Input voltage: 100V-240VPower: 12w 20w 25w 30w 40w 55w 65w 80wHead: 1.5m 2.2m 2.8m 3.2m 3.5m 4.0m 5.2m 5.5mFlow: 1200L/H 2000L/H 3200L/H 4000L/H 5000L/H 7200L/H 9000L/H 12000L/H