Have read all the forums and found a few that were adaptable (maybe/not). Here is what I have:
Source Main Panel:
30a, 240v, GFCI feeding a 10/3 + ground wire to a 30a, 240v Pass&Seymour locking outlet.
Control Box Components:
Buzzer, 120/240, FLBuz
Switch, 3 position, 2 NO, SW3 (Power to...