Honeywell Ceramic Automatic Reset Thermostats, 2455RCG Series, 2455RCG81890022, Switch Type SPST, Automatic Reset, Open on Rise, Contact Type Gold Alloy, Ceramic, 0.5 A, B207, T147, Operating Temperature 0 °C to 260 °C [32 °F to 500 °F], Open Temperature 135 °C [275 °F], Close Temperature 93.33 °C [200 °F], Open Tolerance 8.33 °C [15 °F], Close Tolerance 5 °C [9 °F]