Time-delay relay module for older RV furnaces with 12-volt DC igniter boards. The integrated logic controls fan motor activation—4-second delay at startup prevents drafting cold air, then a 2-minute cool-down after the heating cycle stops the fan smoothly. Microcontroller-based reliability keeps cycles consistent.

• 12 volt DC operation
• 4-second fan start delay
• 2-minute post-heat cool-down
• For furnaces with standard 12V DC igniter boards
• 3-year limited warranty