DINOSAUR 24-VOLT UNIVERSAL IGNITER BOARD FOR FURNACES - Use in Duo-Therm, Hydro-Flame and Suburban. Features: ò Fuse Protectionùa fuse on the board protects the boardÆs 24V circuits from short-circuit damage. ò Dual Senseùflame sense works through high-voltage connector and edge connector simultaneously. ò Diagnostic-aid LED on board is green to show power on board, red to indicate power to gas valve. Igniter Board.