XENA XX15-SS Stainless Steel Motorcycle Disc Brake Alarm Lock - Anti-Theft Security Device for Bikes, Scooters & ATVs | Outdoor Parking Protection | Weather-Resistant Metal Construction

Not only does it act like a wheel 'boot', preventing someone from just rolling your bike away, it has a pretty good alarm that gets triggered when it senses a movement. The only criticism I have is the actual spring loaded key lock and the time to disarm the device.The actual lock on the device can be tricky to lock and unlock in time. It's spring loaded. The alarm counts down a few beeps before the alarm starts shrilling. It's easy to get in a panic if you're fidgeting with the key, and it's raining, or your lock is in an awkward place on your brake disc and there's a car next to you limiting your space to move, and your anxiety of the countdown beeps makes things worse. A couple of times the alarm went off while I was trying to simply unlock it. I understand that's what it's supposed to do, but then make the spring loaded lock easier to lock and unlock, or have a smart device that remotely disarms the lock so a person can remove it without the time stress.Secondarily, it's not that loud as I had thought it was going to be. I have a house alarm, and car alarm, and this device is much softer than those. My recommendation would be about 5 or 10 decibels louder.