The 202048 is a replacement high temperature limit switch with auto reset. Its silver dot indicates the 240°F temperature limit for this control switch.
It is manufactured by Nortek for Reznor. It is for use with models:
- UDBP175, UDBP200, UDBP350
- UDBS175, UDBS200, UDBS350
- UBX175, UBX350
- UBZ175, UBZ200, UBZ350