This item is great for the price. Very simple installation. I would suggest using both the tape squares and zip ties so it's securely in place and mounting it in a spot that is not very noticeable. Like under the seat or wedged in the frame somewhere. Very easy installation instructions. The volume is definitely noticeable to deter a thief from stealing the bike. When it is armed if you move it once the alarm goes off for a few seconds but if the bike is continuously moved after that it will stay on. I couldn't be happier with this product. Overall it just makes you feel a little more safer when your bike is unattended, but of course you should always have a bike lock. But this is definitely helpful for stopping someone from taking off the wheels off your bike if you do not have nut locks.