This compact Nedis Zigbee smoke alarm alerts you to smoke development, with a loud alarm for people nearby and an alert sent to your phone, wherever you are. With its compact size of 43 x 43mm (excluding base), it is 75% smaller than most detectors for discreet placement. But it's big enough to house a powerful sensor with a 10-year lifespan and an 85decibel alarm that warns in the earliest stages of a fire. The smoke alarm is very easy to install, either using the included 3M tape or screws. The included lithium battery lasts for 5 years before it needs to be replaced and then a reminder is sent to your phone. Install this smoke alarm in the free Nedis SmartLife app by connecting it to your Zigbee Gateway (WIFIZBxxx) wirelessly. Can be easily paired with other SmartLife products with additional safety features. For example, this could mean that you set your smart lights to turn on when smoke develops for easier evacuation. About Nedis SmartLifeDiscover a wide and ever-growing product range of lights, switches, sockets, sensors and cameras - all of which can be controlled through an easy-to-use and intuitive app. Whether you're looking for a single smart lamp or camera or you want to automate your entire home, you'll discover just how accessible smart technology is today.