Kidde KIR-HD

The Kidde KIR-HD is an intelligent, addressable fixed-temperature/rate-of-rise heat detector for fire alarm systems. It monitors air temperature via a thermistor sensor and automatically analyzes the data to trigger an alarm when the temperature exceeds 135°F or rises faster than 15°F per minute, providing reliable detection for both slow-burning and rapidly developing fires.

Key Features

• Dual-function detection: 135°F fixed-temperature and 15°F/minute rate-of-rise
• Intelligent analog addressable device for 4100/4120 series and compatible analog systems
• Continuous self-diagnostics with latest thermistor technology
• Compatible with standard detector bases (KI-SB, KI-RB, KI-IB and variants)
• Compact design suitable for wall or ceiling mounting

Technical Specifications

• Alarm Point (Fixed Temperature): 135°F (57°C)
• Alarm Point (Rate-of-Rise): 15°F (8.3°C) per minute
• Operating Temperature Range: 32°F to 120°F (0°C to 49°C)
• Power Requirements: Powered by the analog SLC loop
• Mounting: Compatible with 1-gang boxes, 4-inch octagonal/square boxes

Certifications

• UL Listed intelligent fire detector for analog addressable systems
• NFPA 72 compliant thermal detection