I have all kinds of bike alarms, at least 10. They don't work well. Either it takes a hard hit to trigger it or you get false triggers. They also were not quality items. Apparently most lock buyers don't want to pay extra for a bicycle alarm, or they know they are not helpfull anyway.
In any case, it does not matter, unlike a car, or the hidden alarm I built for my motorcycle, one can just put a hand or a rag over the noise maker on a bicycle alarm. Or you can hit it with a rock or a hammer. Or just stand there, no one responds.
I have been experimenting with bicycle alarms for more than a decade. Cables, motion detectors, U lock with an alarm, etc.