Installation is quick and simple using the included screws, wall plugs and sticky pads for ceiling or wall installation. Heat alarms are suited for use in kitchen, garage and rooms where dust is present in large amounts. Do not use a heat alarm near bedrooms, hallways or shower rooms. We recommend every home include a complete alarm protection solution including ionisation, optical and heat alarms. Features include a test button for ensuring battery function, and a hush button for silencing false alarms. Comes with a 6 year warranty, and measures 127mm in diameter, and 39mm deep. Manufactured by Kidde Firex.