Danish by design, the aesthetically pleasing CAVIUS smoke alarms are not only the world’s smallest, they also contain advanced technology and intelligent features. All Nano alarms come with; • 10-year Duracell lithium battery (sealed) • 2 x install options - Recessed or Flush/standard mount • 30 day low battery warning • An easy to access test and hush button • AS3786:2014 certified & RTA compliant