download hard wired smoke detector flashing red

Check to see which ones are approved for your brand of detector. I have used all of these and they all work very well. There is also one called 'Smoke Check or 25s' which I believe is made by HSI Fire & Safety Group

Safest way of course being the can of pressurized smoke. Or light a small piece of paper, blow it out, then let the smoke drift into the detector. Just make sure you get the type that is approved for the smoke detectors you have installed. There are a few makers of 'smoke in a can' for lack of a better way to describe it, that you can spray like an aerosol can and it will test the sensor.

To properly test the sensors, you need to introduce smoke (or synthetic smoke) to the sensor. Just remember that simply pushing the button until the detector goes off is NOT testing the sensor, it is simply testing the annunciation circuit (the alarm part). All will beep when their backup battery dies. A simply monthly test will tell you if they are still functioning. Most smoke alarms work for a very long time.

Download hard wired smoke detector flashing red