My landlord has recently reinstalled my smoke alarm. It is labelled on the smoke alarm as an "Optical" type.
The smoke alarm appears to be working - it's powered by both mains electricity and battery - it shows a green status light, and when I push the test button it does indeed beep as expected.
However, being a cautious type, I've tried holding a lighting match 20cm or so below it, then extinguishing it. That generates a small puff of smoke. This doesn't seem to trigger the alarm.
Should I reasonably expect that to trigger the alarm? Is there anything else I can do (safely!) to test the alarm?
In case it's relevant, I'm in the UK.