10 Year Smoke Alarms

Sealed smoke alarms contain a lithium longlife battery that supplies power for the entire ten year life of the smoke alarm. At the end of the battery life the power supply is interrupted manually to stop the smoke alarm chirping and the alarm is disposed. 10 Year smoke alarms give peace of mind, stop anybody removing the battery for other purposes and avoid the smoke alarm being on the ceiling with the battery removed (as happens often when a smoke alarm had false alarms).The 10 year smoke alarms can, of course, be hushed, which means silenced by the press of a button, if the alarm is triggered by eg burnt toast.