I've got a mains-attached one (ie not solely battery powered), and the button is "hush" which silences it for 5 mins (although it chirps once per minute to remi

I've got a mains-attached one (ie not solely battery powered), and the button is "hush" which silences it for 5 mins (although it chirps once per minute to remind you that it's hushed). If you hold the button whilst it's not going off, it tests the alarm.