Liberty's QE34=6-511-3 is a QE-Series quadplex control panel, sold separately from the pump system. It alternates the load across four pumps with six level control floats — configurable for two-lead/two-lag high-flow operation or true demand dosing — and includes HOA switches, a NEMA 4X enclosure, circuit breakers (single-phase) or overloads (three-phase), a visual and audible alarm, pump run indicator lights, and auxiliary contacts. Wired for three-phase power at 208-240V, with a 35' float cord set.