First Alert BRK Brands Hardwired 120-Volt AC/DC Heat Alarm with Battery Backup - HD6135FB

First Alert BRK HD6135FB Hardwired Heat Alarm with 9V Battery Backup

The First Alert BRK HD6135FB is a specialized, professional-grade heat alarm designed to provide a vital layer of fire safety in environments where traditional smoke detectors are prone to nuisance alarms. Standard smoke alarms can be triggered by dust, high humidity, or common household fumes, making them unsuitable for areas like garages, attics, crawl spaces, and kitchens. This hardwired heat alarm solves that problem by utilizing a thermistor-based sensing system that ignores airborne particles and instead monitors the air for specific thermal changes. By focusing on heat rather than smoke, the HD6135FB ensures that you receive a reliable early warning of fire in the most demanding areas of your home or business without the frustration of false triggers from car exhaust or cooking steam.

Technologically advanced, the HD6135FB features a sophisticated microprocessor that manages two distinct types of heat detection: fixed-temperature sensing and rate-of-rise technology. The alarm is calibrated to trigger an immediate alert if the ambient temperature reaches a fixed point of 135 degrees Fahrenheit. Additionally, the rate-of-rise sensor will activate the eighty-five-decibel siren if it detects a rapid temperature increase of fifteen degrees Fahrenheit or more within a single minute. This dual-sensing approach allows the unit to respond to fast-burning, high-heat fires even before the air reaches the fixed temperature threshold. For continuous operation, the device is powered by a 120V AC direct-wire connection and includes a 9V battery backup, ensuring your property is protected during power outages caused by storms or electrical emergencies.

The First Alert HD6135FB is engineered for seamless integration into a comprehensive home safety network. It features hardwired interconnectivity, allowing it to be linked with up to eighteen other compatible devices, including twelve smoke alarms and six heat or carbon monoxide detectors. When one unit in the series is triggered, every interconnected alarm will sound simultaneously, providing essential early warning throughout the entire premises. The unit also includes a latching alarm indicator that visually identifies which specific device initiated the alarm even after the event has subsided. Maintenance is simplified through a single test and silence button and a side-loading battery drawer that allows for quick battery changes without removing the unit from the ceiling. Compliant with UL539, CSFM, and NFPA 72 standards, this heat alarm is a critical safety supplement for any modern building infrastructure.

• Dual Heat Sensing: Features 135°F fixed temperature and 15°F/min rate-of-rise detection.
• Microprocessor Controlled: Advanced technology significantly reduces nuisance alarms from dust and fumes.
• Interconnectable: Links with up to 18 total devices for a "one-act-all-act" safety system.
• Constant Power: 120V AC hardwired connection with a reliable 9V battery backup for outages.
• Latching Indicator: LED identifies which alarm triggered the system for easy troubleshooting.
• Environmentally Versatile: Ideal for garages, laundry rooms, attics, and unfinished basements.
• Loud 85dB Siren: Penetrating audio alert ensures you are notified of thermal threats immediately.
• Industry Certified: Conforms to UL539, NFPA 72, HUD, and CSFM safety standards.
• Long-Term Reliability: Backed by a 10-year limited manufacturer warranty for long-term protection.