White-Rodgers™ 21V51U-843 Universal Two-Stage Furnace Control, 24 VAC, 14.5 A

Item Features

• Provides proper signals to 5 different manufacturer ECMs for maximum control replacement coverage
• Includes a universal 120V nitride ignitor to allow replacement of 80V and 120V controls
• Advanced diagnostics through a Tri-color LED with push-button fault recall and a CFM LED indicator
• Thermostat Inputs R,B/C,W1,W2,YLo,Y,G,O,DHUM
• Hot Surface Ignition for 3 Speed (ECM Blower Motor Systems)