Kidde KIR-DDOS Optica Intelligent Duct Smoke Detector Rotary Addressed

Protect building occupants and HVAC infrastructure with dependable, low‑false‑alarm duct detection. The Kidde Commercial Optica intelligent duct smoke detector is engineered for B2B installations that demand reliable monitoring and minimal maintenance. As an optical duct smoke detector it uses advanced digital filtering, environmental compensation, and historical signal analysis to distinguish true fire signatures from transient contaminants—reducing unwanted alarms and service calls.

Designed for fast commissioning and service, the KIR‑DDOS features a compact, less‑than‑2.5" depth and standard sampling tube spacing to simplify upgrades and retrofit projects. It supports 1–127 rotary addressing and operates on 15.2–19.95 VDC, with an industry‑proven operating range of -20°F to 158°F and 100–4,000 ft/min air velocity rating for robust performance inside HVAC ducts. The unit includes a Form C auxiliary relay for direct HVAC control integration and is UL listed for dependable compliance.

Ideal for commercial buildings, data centers and critical security or surveillance environments, the Optica duct detector delivers precise monitoring that integrates seamlessly with fire alarm and building management systems. Specify the Kidde Optica duct smoke detector for effective duct protection—contact us to configure for your HVAC and security system.

• Reliable, low‑false‑alarm duct detection that reduces nuisance alarms and protects HVAC systems and occupied spaces
• Fast, tool‑free installation and snap‑apart maintenance to minimize downtime and service labor
• Intelligent digital filtering and environmental compensation for stable sensitivity across changing conditions
• Compact, low‑profile design fits tight spaces while supporting standard sampling tube spacing for easy upgrade
• Built‑in Form C auxiliary relay for direct HVAC/shutdown control and 1–127 rotary addressing for addressable panels
• Wide operating range (-20°F to 158°F) and 100–4,000 ft/min airflow rating for reliable performance in harsh duct environments