Honeywell on-off primary control with prepurge rm7895a1014, intermittent pilot features microprocessor-based integrated primary burner control for automatically fired gas, oil, or combination fuel single burner applications. Provides level of safety, functional capability and features beyond conventional controls functions include automatic burner sequencing, flame supervision, system status indication, system or self-diagnostics and troubleshooting subbase, amplifier, and prepurge timer are required for operation necessary accessories sold separately: pc interface, keyboard display module, data controlbus module, remote display module, first-out expanded annunciator, and combustion system manager software five leds provide sequence information interchangeable plug-in flame amplifiers optional local or remote annunciation of operation and fault information nonvolatile memory retains history files and sequencing status after power loss optional remote reset capability optional report generation selectable relight or lockout on loss of flame airflow switch check