Dinosaur 24-VOLT UNIVERSAL IGNITER BOARD FOR FURNACES - Use in Duo-Therm. Hydro-Flame and Suburban. Features: Fuse Protection-a fuse on the board protects the board's 24 Volt circuits from short-circuit damage. Dual Sense-flame sense works through high-voltage connector and edge connector simultaneously. Diagnostic-aid LED on board is green to show power on board. Red to indicate power to gas valve. Igniter Board.