Honeywell Ceramic Automatic Reset Thermostats, 2455RC Series, 2455RC-91000373, Switch Type SPST, Automatic Reset, Open on Rise, Contact Type Silver Alloy, Ceramic, 15 A/10 A, B203S, T146, Operating Temperature 0 °C to 260 °C [32 °F to 500 °F], Open Temperature 150 °C [302 °F], Close Temperature 120 °C [248 °F], Open Tolerance 7 °C [12.6 °F], Close Tolerance 8 °C [14.4 °F]