The Midco International 842951 Ignition Control 30-Second Prepurge 7-Second TFI 24V is a reliable control module designed for gas-fired HVAC systems and burners. It manages the ignition sequence by initiating a 30-second prepurge to clear residual gases, followed by a 7-second trial for ignition, ensuring safe and efficient startup. https://www.partshnc.com/842951-midco-international-24v-30spp-7stfi-ignition-cntrl