Kidde KIR-HD Intelligent Fixed Temperature/Rate-of-Rise Heat Detector

Intelligent fixed temperature and rate-of-rise heat detector engineered for reliable fire detection in diverse environments. Features next-generation thermister technology with a 135°F fixed temperature alarm point and programmable 15°F per minute rate-of-rise detection for fast-flaming fires. Designed for efficiency and cost savings with continuous self-diagnostics, non-volatile memory, and convenient rotary addressing. Compatible with existing wiring and supports up to 250 total devices per loop. Includes bicolor status LED for clear operational feedback. Available in standard, relay, fault isolator, and audible mounting base configurations with 50-foot spacing capability. Ideal for properties requiring dependable heat detection with minimal installation complexity and maximum long-term reliability.