I love the low price. Love how this alarm is extremely loud. Love how easy it was to use/set up. Love the size, I can secure it under my bike seat. Love how sensitive the alarm is, just a little jostle and it blares. After looking at numerous devices to secure my bikes at home and on the road, this one is the best. Of course I will still lock my bikes. The moment someone touches my bike, this alarm goes off! Not enough time to cut my lock without drawing lots of attention. The remote works just like a car alarm, it tells you when it’s armed when you click it. I also secured one to my garage door, on a string. If the door starts to open, it will move the alarm and go off. Brilliant! I have ordered two more, so four in total. Love these!