Wireless fire detector with heat sensor for indoor use, heat detection via integrated temperature sensors with alarm triggered by a temperature increase of approx. 10 °C within one minute or when exceeding approx. 64 °C, support for interconnected fire alarms within the Ajax system, wireless communication via Jeweller protocol with a range of up to 1700 m in open space, integrated 85 dB siren and LED status indication, system monitoring with regular status polling and automatic self-diagnostics, pairing and configuration via Ajax Hub using QR code, available as RB version with replaceable batteries or SB version with sealed batteries, indoor use only, scope of delivery (SB version): FireProtect 2 SB (Heat) Jeweller, SmartBracket mounting plate, mounting kit, quick start guide.