Feature: 1. Energy-saving motor, small temperature rise, small power consumption. 2. High quality aluminum shell, compact structure, fast heat dissipation, lower noise. 3. Small volume, large volume of air out, can all weather working. 4. Anti-slip and shock-absorbing foot pad, can effectively keep the body stable and reduce vibration noise. 5. Wider application, suitable for the using of household power outage fish tank, marketing points, transport massage chairs, sewage treatment and various industrial equipment. 6. The air pressure is strong, and oxygen explodes easily at 2 m deep water. 7. Safe and low voltage, convenient and quick to use. 8. No fear of cold, low temperature as usual operation, can be used normally in minus 20℃ environment. Specification: Condition: 100% Brand New Item Type: Aeration Pump Optional Model: DC-30, DC-50 Material: Aluminium Alloy Color: As Pictures Shown Model Power Voltage Air Volume Pressure DC-30 16W 12V 26L/min ≥0.028MPa DC-50 25W 12V 48L/min ≥0.028MPa When the air pump is running Because the execution magnet and the notification magnet are misaligned due to vibration during transportation, there may be a louder sound during operation. Just pick up the air pump in a thick place for a few clicks to reset and restore mute. Low air volume of air pump Check the installation direction of the check valve first.The opposite direction on the check valve will lead to a reduction in the air output. Air stone out of air, small bubbles Unplug the connection between the gas stone and the trachea, then immerse the gas stone in hot water for about five minutes, and then you can be exposed to oxygen, or caused by the problem of the type of gas stone, you can consider replacing the gas stone. Can the air pump be immersed in water This product does not have a waterproof function, please take waterproof measures when using it outdoors to prevent the water pump from being burned by water or leakage.. Package List: 1 x Aeration Pump 1 x Pipe1 x Water Tap1 x 6 Way Splitter1 x Manual Note: This product is designed with high speed piston and adopts aluminum alloy to dissipate heat, so the temperature of the shell will be normal. Please keep it out of reach of children.