Heat-detector with interlink capability and a built-in 10-year lithium battery. Big visible easy-to-use test key. A heat detector is suitable for those locations where a false alarm from a standard smoke detector is likely to occur such as steam, cooking flames or particles (e.g., burning toast). When the heat detector is activated (57 °C ) it emits a loud and clear audible signal (85dB), activates the alarm sound in all interlinked detectors and sends a call to the monitoring centre via the social alarm unit. The heat detector can be connected to Careium’s social alarms and carephones to create a secure home environment. It can interlink with Careium Smoke i10, CO i10 and additional Heat i10 detectors for maximum security.