Wireless fire detector with smoke and heat sensors for indoor use, smoke detection via an optical dual-spectrum sensor in combination with the HazeFlow algorithm to reduce false alarms (ignoring steam and water vapor), heat detection via integrated temperature sensors with alarm triggering when the temperature rises by approx. 10 °C within one minute or when exceeding approx. 64 °C, support for interconnected fire alarm triggering within the Ajax system, wireless communication via the Jeweller protocol with a range of up to 1,700 m in open field, integrated siren with 85 dB and LED status indicator, system monitoring with regular status polling and self-diagnostics, pairing and configuration via Ajax Hub using a QR code, available as an RB version with replaceable batteries or as an SB version with built-in batteries, indoor use, scope of delivery (SB version): FireProtect 2 SB (Heat/Smoke) Jeweller, SmartBracket mounting plate, mounting kit, quick start guide.