Introducing the Kidde Fenwal 27021-0 Detect-A-Fire Heat Detector, designed for reliable fire safety in your home or business. This innovative device features a self-restoring mechanism that eliminates the need for replacements, ensuring long-lasting performance. Built to endure shock and vibration, it offers rugged durability for various environments. With multiple temperature settings available, this heat detector is versatile enough to meet your specific needs. Don't compromise on safety—invest in the Kidde Fenwal Detect-A-Fire today and protect what matters most!