# Detection

Part ID: 6.09a · Layer 6 (Facility cooling & HVAC) · child of 6.09

Smoke and heat detection, including aspirating detectors that continuously sample air to catch a fault before visible smoke develops.

## Companies

| Company | Role | Confidence | Ownership | Ticker | Note |
|---|---|---|---|---|---|
| Hochiki | manufacturer | inferred | public | 6745.T |  |
| Honeywell | manufacturer | inferred | public | HON |  |
| Johnson Controls | manufacturer | inferred | public | JCI |  |
| Siemens | manufacturer | inferred | public | SIE.DE |  |
| Bosch | manufacturer | inferred | private |  |  |
| Kidde Global Solutions | manufacturer | inferred | private |  | Lone Star |
| Securiton | manufacturer | inferred | private |  |  |

Confidence tags: disclosed = company/filing statement; reported = trade press or partner list; inferred = taxonomy lead.