Resideo S8701A1066 Ignition Module 321702-401 the TFB24-MFT is designed to

the TFB24-MFT is designed to operate on a wide range of 24V power sources

and vibration in demanding environments

This replacement damper actuator is constructed for high-cycle applications

a clogged pressure port

Resideo S8701A1066 Ignition Module 321702-401 the TFB24-MFT is designed toResideo S8701A1066 is a direct spark ignition (DSI) module with a 6 second trial for ignition and lockout feature, designed for gas fired HVAC equipment such as furnaces, boilers, and rooftop units. It controls burner startup by delivering spark ignition and verifying flame presence to ensure safe and controlled combustion. This module is commonly used as a replacement when existing ignition controls fail, experience intermittent ignition, or no