Kidde Intelligent Duct Replacement Optical Sensor Tube

The KI-DDOS-ROT is the replacement optical sensor tube assembly for the Kidde Commercial KI-DDOS Optica Intelligent Duct Smoke Detector. It's the sensing half of the split-assembly design Optica duct detectors use — the piece most likely to need service after years in a dusty HVAC duct.

Why installers use it

• Snaps apart and back together in seconds, so a sensor swap doesn't turn into an afternoon in the ceiling
• Restores original 1.5% to 4.5%/ft obscuration sensitivity without recalibrating the whole detector
• Compatible with the existing KI-DDOS sampling and exhaust tube hardware already in the duct

Where it fits

Stock this alongside the KI-DDOSIB interface board — between the two, most KI-DDOS service calls are a five-minute fix instead of a full detector replacement.