The Jebao SDW series is the latest version of the DW series, with an upgraded sine wave controller for ultra-silent water movement. The SDW-5 has a maximum output of 1,500gph, and measures 2" long with a 1.75" diameter. The outer magnet works on glass up to 3/8". The SDW-9 has a maximum output of 2,500gph, and measures 2.5" long with a 2" diameter. The outer magnet works on glass up to 1/2". The SDW-16 has a maximum output of 4,250gph, and measures 3" long with a 2.5" diameter. The outer magnet works on glass up to 5/8". The included controllers have 5 wave modes: W1: Standard Pulse W2: Sine Wave Pulse Else: Randomized flow pattern H: Constant Flow C: Anti Sync Pulse (requires 2 or more pumps) The controllers have an integrated light sensor, feed timer, master/slave functionality, and a button lock to prevent unwanted changes.