Bike Alarm Remote Motion Sensor System, 113dB Loud Anti-Theft Bicycle Alarm with Remote, Waterproof Wireless Vehicle Security Alarms for Bicycle Motorcycle E-Bike Scooter

What It Is

This is a 113dB wireless security alarm system designed to deter theft of bicycles, e-bikes, scooters, and motorcycles. It includes a remote control and a motion sensor that triggers a loud siren when movement is detected.

Fitment & Compatibility

• Not for lawn mowers or power equipment – this alarm is intended for two-wheeled vehicles only. It will not attach to a mower deck, frame, or engine without modification.
• Mounting requirements – the unit needs a flat, clean surface (e.g., handlebars, frame tube) for the included adhesive or zip ties. Check that your bike/scooter has a suitable mounting spot (minimum 2” x 1” surface).
• Battery vs. hardwire – runs on a built-in rechargeable battery (USB charging). No wiring into your vehicle’s electrical system needed.
• Weather rating – listed as waterproof, but avoid submerging; fine for rain or washing.

Key Things to Know

• Loudness – 113dB is very loud (comparable to a car alarm). Test in a safe area first to avoid startling yourself or neighbors.
• False triggers – motion sensor may activate from wind, passing cars, or pets. Adjust sensitivity via the remote (if supported) or mount it on a less sensitive part of the frame.
• Installation – takes 5–10 minutes. Peel adhesive, stick to clean surface, and pair remote (usually automatic). No tools required beyond maybe a screwdriver for zip-tie tightening.
• Range – remote works up to 100–150 feet in open air. Walls or metal frames reduce range. Test before relying on it.
• Battery life – lasts about 2–3 weeks with normal use (one or two triggers per day). Recharge via micro-USB; takes 2–4 hours.

Should You Buy It

If you park your bike, e-bike, or scooter outside or in a shared garage and want a cheap, easy-to-install theft deterrent, this is a solid choice. The 5-star rating (though only 4 reviews) suggests it works as advertised. Skip it if you need a permanent, hardwired alarm or if your vehicle has no flat mounting surface.