Cuts circles from 1 7/8'' to 8 1/2''. Innovative, ratchet mechanism is efficient and easy to use No more dragging the blade through bunched fabric or dealing with time consumi.
This means that smoke emitted from the incense will set off a smoke alarm when in range of the detector.
Just spray some of the test material into the detector, and wait 5 to 10 seconds for a response. If the alarm sounds, you know the unit will sound in a fire. If not, you have a non-functioning smoke detector, even if it beeps when you push the button.Try changing the batteries and cleaning the detector to remove any dust that may be blocking the openings, then repeat the test procedure. If that does not get it working, it is useless.Replace it as soon as possible.. Alert all members of your household that you are testing the alarm first, unless you would like to use the opportunity for a fire drill. 1  If your smoke detector is hardwired to a monitored security system, be sure to notify the security system's company that you are performing a test before you test the alarm.