Not so sure about your mounting point. Looks like one good downward kick with a foot would shear the alarm off in a hurry, Other than that, good presentation!
One review on Amazon guy hid it under the battery under the control panel, he also used a steel muffler clamp to make it more secure. Saw another video where person hides it facing inward like on this video but inwards so is hard to see.
Could also secure on the seat post with a muffler clamp, hidden somewhat under the seat, then atleast pretty secure and could still use the light as a rear light.
Wonder how well it would do against a blow from wire cutters. I'm sure an angle grinder would disable it in about 3 seconds, just cut the batteries in half, no power. guess it's better than nothing.
