- Heat detector with replaceable batteries - Two thermistors for temperature measurement - Up to 7 years of battery life with replaceable batteries - Integrated 85 dB siren - Standalone or as part of the Ajax system operation - Up to 1,700 m radio communication range with the hub - Management and configuration via Ajax apps - Sensor meets the requirements for Class A1 heat detectors - High temperature alarm at temperatures above 64 °C - Temperature spike alarm when the temperature rises more than 10°C within 1 minute (or faster) - Power supply: 2 CR123A batteries - Dimensions 44 × 86 × 86 mm - Weight 146g