Honeywell Phenolic Automatic Reset Thermostats 2455R Series 2455R--99130397 Switch Type SPST Automatic Reset Open on Rise Contact Type Silver Alloy Phenolic 15 A/10 A B901/902 T147 Operating Temperature 0 °C to 150 °C [32 °F to 302 °F] Open Temperature 80 °C [176 °F] Close Temperature 70 °C [158 °F] Open Tolerance 3 °C [5.4 °F] Close Tolerance 4 °C [7.2 °F]