The Eve Smoke is one of the new members of the Elgato Eve Homekit family. This smoke detector will not only set off a loud alarm, but will also send notifications via Homekit, and can be used to initiate Homekit scenes. Photoelectric smoke and differential temperature sensors ensure that any kind of fire is immediatly detected. Apart from checking for smoke and fire, the Eve Smoke can also check its internal components, and send out notifications if any one of them is not working correctly. Combine this with a batterylife of 10 years, and you have got an extremely reliable and versatile smoke detector.