Compare Quick view Gecko Alliance 0204-201003 Gecko Alliance | Sequencer Control, Gecko DJS (Dynamic Jet Sequencer), 120V / 24Vac, 4 Outputs MSRP: Was: Now: $522.90 By grouping jets into distinctive sets and electronically controlling the action of each one of them, the DJS-1 adds a totally new and highly effective dimension to any spa.