Honeywell Ceramic Automatic Reset Thermostats, 2455RC Series, 2455RC-90820389, Switch Type SPST, Automatic Reset, Open on Rise, Contact Type Silver Alloy, Ceramic, 15 A/10 A, B201A, T147, Operating Temperature 0 °C to 260 °C [32 °F to 500 °F], Open Temperature 180 °C [356 °F], Close Temperature 150 °C [302 °F], Open Tolerance 8 °C [14.4 °F], Close Tolerance 11 °C [19.8 °F]