Used with 120 volt controllers - Combines gas flow control and electronic direct main burner ignition sequencing functions into a single unit - The ignition source is 120 volt hot surface igniter lighting the main burner flame - Provides all gas ignition safety functions by controlling gas flow, ignition source, and a 120 volt combustion air blower - The control also monitors the appliance airflow proving switch circuit and limit string to assure proper appliance operation - The SmartValve System Controls provide prepurge, postpurge and timed trial for ignition with multiple ignition trials and auto reset from lockout - Diagnostic LED indicates system status - Includes LP conversion kit