Ajax FireProtect 2 AC (Heat/Smoke) is a mains‑powered combined heat and smoke detector with a sealed backup battery and Jeweller two‑way wireless communications. It combines a dual‑spectrum optical smoke sensor in a patented dust‑resistant chamber with two Class A1R thermistors for rapid‑rise and high‑temperature detection. The device includes a built‑in 85 dB siren, multi‑colour LED status indicators and tamper detection, and supports both hub‑initiated and direct detector‑to‑detector interconnection.

• Combined detection: dual‑spectrum optical smoke sensor + Class A1R thermistors for heat spike and high temperature alarms.
• Power: Mains 110–240 V~, 50/60 Hz with sealed non‑replaceable lithium CR‑2/3AZ backup.
• Wireless: Jeweller encrypted two‑way radio, long open‑space range (~1,700 m) and ERP up to 20 mW.
• Interconnection: hub‑initiated alarm cascade (≈20 s) and fallback direct detector interconnect if the hub is unavailable.
• Design: patented smoke chamber and HazeFlow 2 algorithms to reduce false alarms from steam/vapour; built‑in 85 dB siren; tamper protection.

Use cases: ideal for domestic and commercial indoor installations where reliable, interconnected fire detection is required. Suitable for professional installers and experienced DIYers; recommended installation via the supplied SmartBracket (with WAGO 221 terminals) and following the Ajax installation guide.

Safety & compliance: Refer to the official Ajax datasheet and local fire safety regulations when installing. Ensure you select the correct regional radio version and verify any required local certification (CE / UKCA) for your market.

Package & support: Detector, SmartBracket mounting plate (with WAGO 221 terminals), installation kit and quick start guide included. Manufacturer warranty: 24 months.