Honeywell Ceramic Automatic Reset Thermostats, 3450RCG Series, 3450RCG82140045, Switch Type SPST, Automatic Reset, Open on Rise, Contact Type Gold Alloy, Ceramic, 0.5 A, B206, T147, Operating Temperature 0 °C to 260 °C [32 °F to 500 °F], Open Temperature 196.11 °C [385 °F], Close Temperature 121.11 °C [250 °F], Open Tolerance 8.33 °C [15 °F], Close Tolerance 11.11 °C [20 °F]