The 196949 is a replacement flame rollout switch with manual reset. Its red dot indicates the temperature high and low limits of 225°F / -31°F for this flame rollout switch.
It is manufactured by Nortek for Reznor. It is for use with models:
- UDAP45, UDAP60, UDAP75
- UDAS45, UDAS60, UDAS75
- UDX45, UDX60, UDX75
- UDZ45, UDZ60, UDZ75