Wsdcam Bike Alarm with Remote 2 Pack, 113dB Wireless Anti-Theft Vibration Motorcycle Bicycle Alarm Vehicle Security Alarm System (Blue)

Works amazingly well...open the car door and alarm goes off...super amazing

I tried this in several places on a Prius using different methods of attachment. I shook the car as violently as I could and the device would not sound the alarm beyond an initial beep. The alarm gives a warning sound when first shaken or vibrated. That gives the thief time to locate and muffle the alarm. The reviews state that on a bicycle the alarm works when the bike is moved from a vertical position down to a horizontal. Hows that going to work for a Prius? It cannot be placed on the exhaust system directly. Heat in excess of 500°F would melt the plastic case and the circuits. There are better alarms some available on Amazon for catalytic converter protection.

Easy to install. Hidden under bike seat. Loud enough to scare away most people trying to steal bike. A loud surprise!

Easy to use and install little alarm device, very loud and would definitely deter any bad intents at the first ‘warning beep’, and would make ‘em run if they trigger the actual alarm! Pretty sensitive, gives you a good and distinct reminder if you happen to bump/slightly rock the vehicle. Hubby put one on his motorcycle and one is going on the ATV.

Good bike alarm very loud reasonable price would recommend .

Easy installation

Easy to install. Good adjunct for cable and u locks on recumbent trikes. Loud, adjustable sensitivity.

It is very sensitive just bumping a handle bar sets it off. Also use as a intruder alarm on the front door.

Got it for two of my e-bikes. Works great. Super loud!

These alarms are well worth the money. Works great easy to install and use.