Ez-Flo 90834 Time Delay Fan/Heat Sequencer 2DPDT-SPST Solid State, Contact Rating To 25 Amps At 120 Or 240 Bolts And 12.5 Amps At 480 Volts Shock And Vibration Resistant Quick Connect Auxiliary Terminals M1-m2 And M3-m4 Are Always First On And Last Off Replaces Klixon 51172-33, White Rodgers 24a34-6