Interrupted Electronic Oil Primary, Electrical Connections: Burner Motor, Oil Valve, Ignition, Cad Cell, Limit, Thermostat and Alarm, Settable 15/30 or 45 Second Safety Switch Timing, Selectable Valve and Blower Delays and Two Line LCD Display, Full Load Contact Ratings: 7.4 Amp @ 120Vac, 3.7 Amp @ 240Vac, Locked Rotor Contact Rating: 44.4 Amp @ 120Vac, 22.2 Amp @ 240Vac, Can be used with both Hydronic and Forced Air SystemsJunction Box on Main Burner Mounting, -40-147 Degree Temperature Range.