Kidde HD135F 135° Heat Detector, 120V AC with 9V Battery Backup

Engineered for dependable, targeted fire protection, the Kidde Residential HD135F heat detector delivers reliable 135°F fixed-temperature response where traditional smoke detectors may underperform. As a 120V AC hardwired heat detector with a 9V battery backup, it continues monitoring during power outages and critical HVAC interruptions—ideal for kitchens, attics, garages and mechanical rooms in commercial and multi-family installations. The HD135F’s interconnect capability links up to 24 Kidde devices (18 initiating), enabling whole-building notification so maintenance teams and occupants respond quickly. Installers benefit from a quick-connect power harness and ceiling-mount design that reduces installation time and callbacks, while clear red LED and low-battery alerts simplify routine checks. UL Listed and backed by a 5-year limited warranty, this heat detector supports your facility’s fire safety, security and monitoring strategies and pairs seamlessly with existing alarm systems. Specify the Kidde HD135F when you need robust, low-maintenance heat detection for high-risk spaces—order now for dependable protection and streamlined installation.

• Reliable fixed-temperature detection that triggers at 135°F, giving clear, targeted fire alerts for kitchens, garages and utility rooms where smoke alarms can false-trigger
• Continuous protection with 120V AC power plus a 9V battery backup to maintain monitoring during outages and power interruptions
• Interconnectable design lets you link the HD135F with up to 24 Kidde devices (18 initiating) so a single event notifies the entire building for faster response
• Quick-connect power harness and ceiling-mount form factor speed installation and reduce labor time for contractors and facility teams
• Low-battery and visible red LED status indicators simplify maintenance and help ensure compliance with safety programs