Is it true that all smoke alarms have an expiry date?

It is true! All smoke alarms must have an expiry date to meet New Zealand standards. Depending on make and model this is sometimes noted as a manufacture date, and expiry date or a manufacture code.

NB. Smoke alarms must be replaced once they exceed their service life. Failure to do so may result in an alarm not working in a fire situation or an insurance claim being declined.