The Lennox 208762 / 10M8001 Limit Switch is a genuine OEM temperature-sensitive safety device designed to monitor heat levels in HVAC systems. This L140-40F auto-reset thermostat opens at 140F and resets at 100F, helping prevent overheating while allowing automatic system restart when temperatures normalize. Key Features OEM Lennox limit switch/thermostat Temperature rating: L140-40F (opens at 140F, closes at 100F) Auto-reset functionality for safe, uninterrupted operation Prevents overheating in furnaces and HVAC systems Reliable and durable for long-term use in residential and commercial applications Specifications Part Numbers: 208762, 10M8001 Type: Limit Switch / Thermostat Temperature Rating: Opens at 140F, closes at 100F Reset Type: Automatic Application: Over-temperature protection in HVAC systems Compatible Models Fits 123 Lennox HVAC models, including many residential and commercial furnaces (refer to service manual or parts list for specific model compatibility) Why Choose This Item Choose the Lennox 208762 / 10M8001 Limit Switch for reliable temperature protection, automatic recovery, and OEM-certified performance. It?s an essential safety component that helps maintain system efficiency while preventing potential heat damage across a wide range of Lennox heating units.