Honeywell Ceramic Automatic Reset Thermostats, 3455RC Redi-TempSeries, 3455RC 01000236, Switch Type SPST, Automatic Reset, Open on Rise, Contact Type Silver Alloy, Ceramic, 15 A/10 A resistive max., B203S, T146, Operating Temperature 0 °C to 260 °C [32 °F to 500 °F], Open Temperature 107.22 °C [225 °F], Close Temperature 90.56 °C [195 °F], Open Tolerance 3.33 °C [6 °F], Close Tolerance 4.44 °C [8 °F]