Honeywell Phenolic Manual Reset Thermostats, 2455RMG Series, 2455RMG86210124, Switch Type SPST, Manual Reset, Open on Rise, Contact Type Gold Alloy, Phenolic, 0.5 A, B201B, T101, Operating Temperature 0 °C to 150 °C [32 °F to 302 °F], Open Temperature 57.22 °C [135 °F], Close Temperature "Manual Reset", Open Tolerance 4.44 °C [8 °F], Close Tolerance N/A