The Honeywell 2455RMG86210124 is a Phenolic Manual Reset Thermostat from the 2455RMG Series. The switch type is Single Pole, Single Throw (SPST) with a manual reset feature. It opens on rise and the contact type is Gold Alloy. This thermostat is made with a durable and heat-resistant Phenolic material. It has a current rating of 0.5 A and is compatible with B201B and T101 mounting brackets. The operating temperature range is from 0 °C to 150 °C (32 °F to 302 °F). The open temperature is set at 57.22 °C (135 °F) and it requires a manual reset to close. The open temperature tolerance is 4.44 °C (8 °F), while the close tolerance is not applicable for manual reset thermostats.Overall, the Honeywell 2455RMG86210124 is a reliable and versatile thermostat designed for various applications that require manual reset functionality and precise temperature control.