Mains-powered wireless fire detector with heat sensor for indoor use, alarm triggered by a temperature increase of approx. 10 °C within one minute or when exceeding approx. 64 °C, power supply via 110?240 V AC with built-in backup battery, 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, indoor use only, scope of delivery: FireProtect 2 AC (Heat) Jeweller, SmartBracket mounting plate, built-in backup battery, connection terminals, mounting kit, quick start guide.