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Hydraulic slide-outs need a switch that returns to center when you let go, and that's exactly how this DPDT on/off/on momentary switch is built. It's rated for 8 amps at 125 VAC and 9 amps at 14 VDC, enough for the control circuits these systems typically run.
A direct fit for replacing a worn slide-out switch that's stopped returning to center on its own.