Package Includes: This package contains 2 limit switches (Compatible with HH18HA452), and designed as reliable replacements for your furnace when the original ones fail Compatibility: The furnace limit switch is compatible with Carrier, Bryant and Payne furnaces, ensuring seamless integration and functionality. This switch is a perfect fit for many HVAC system Efficient Temperature Control: Designed for furnace fan systems, this furnace limit switch opens on temperature rise 250 degrees fahrenheit to disconnect contacts, preventing overheating and maintaining normal furnace operation. The manual reset design enhances both safety and equipment maintainability Built to Last: Built with premium metal, the flame rollout switch is resistant to high temperatures and corrosion, ensuring a long service life. Additionally, the switch has excellent sensitivity and accuracy ensure precise temperature detection and timely adjustments Easy to Install: Simply use basic tools (like a screwdriver) to remove the old switch, then install the limit switch with the front side facing up and connect the leads correctly. This straightforward process saves both time and money Color: As Shown Material: Metal Package Contents: 2* Limit Switch