Ajax FireProtect 2 AC (Heat / Smoke / CO) is a mains‑powered combined fire and carbon‑monoxide detector for Ajax Jeweller systems or standalone audible use. It integrates a dual‑spectrum optical smoke sensor, two Class A1R thermistors for heat/rapid‑rise detection and a chemical CO sensor. The unit includes an internal sealed backup battery and a built‑in piezo siren (~85 dB at 3 m).

• Combined sensing: dual‑spectrum optical smoke, Class A1R heat (static and rapid‑rise) and chemical CO detection.
• Mains powered: 110–240 V AC with sealed CR‑2/3AZ backup battery (AC variant battery sealed/non‑replaceable).
• Fast interconnection: hub‑initiated interconnect (~20 s) and detector‑to‑detector fallback (≈1 min) if hub unreachable.
• Wireless link: Jeweller encrypted two‑way communications; region‑dependent frequency bands; open‑space range up to ≈1,700 m.
• False‑alarm reduction: dust/insect‑protected smoke chamber and HazeFlow‑2 algorithm to reduce steam and nuisance alarms.

Use cases: Suitable for residential and light commercial installations where mains‑powered, interconnected multi‑sensor detection is required. Can be used as part of an Ajax security system (recommended) or as a standalone audible detector.

Compliance & safety: Device documentation references EN 14604, EN 50291 and EN 54‑5 / BS 5446‑2 standards — check the specific region/version and certification for your model. Follow local regulations for detector siting and installation. Do not paint the device or block the sensing chamber; install within the operating temperature and humidity limits. For integrated alarm systems, installation and configuration by a qualified installer is recommended.