Lennox 83L88 MR Rollout Switch SPST 200°F

The Lennox 83L88 MR Rollout Switch SPST is a safety device that is a part of the Lennox HVAC equipment mainly furnaces and air conditioners. SPST and this is a switch that has one input & one output that make or break with reference to the temperature. If the temperature around the switch goes above 200°F, the switch turns off the HVAC system to avoid overheating and subsequent damage. It also serves as a safety feature to prevent damage to your HVAC equipment and to prevent fire.