Eheim Twin Auto Feeder Unit is a twin feeding unit that has 2 x 80ml food chambers for granular stick pellet or flake foods. Chambers can be programmed individually. Two types of food can be fed at the same time ensuring the correct supply to all aquarium inhabitants. The function keys are splash-proof. A warning system quickly shows a low battery level. The feeders fit feeder openings on the Varilux aquarium hoods. There are two models: the smaller fish feeder for flakes and the twin with two separate chambers for different types of food. Can be controlled independently for custom feedings intervals, uses 4 AA batteries. Permanent display of the feed setting, up to 3 feed times in 24 hours, up to 9 turns per feed time, random feed time available.