The Penn-Plax Silent Air B11 Auto/On Battery Powered Air Pump is a powerful and versatile aquarium air pump that provides continual oxygen flow during a power outage or when there is any interruption to your AC power. It will provide enough air for most aquariums up to 55 gallons.
The Silent Air B11 uses two "D" batteries (not included) and will run up to 48 hours continuously. The Silent Air B11 will automatically turn on whenever a power outage is detected. The outage could be due to a tripped breaker, a blown fuse or a complete power outage. Periodically test your Silent Air B11 Pump by unplugging the AC cord with the unit ON to activate your pump. NOTE: The AC power cord is for power detection only and will not charge your batteries.
Features:- Uses two "D" batteries (not included)
- Up to 48 hours of air. Enough air to keep a 55 gallon tank stable.
- Dimensions: 3"W x 2"D x 5.5"H
- Does NOT include the airline hose or airstone.
- NOTE: This is only an emergency air pump. It will only operate when there is no power detected. The plug is only for detecting an electrical connection. It will also NOT charge your batteries.
