Wsdcam

Wsdcam Wireless Bike Alarm with Remote

This is the archetype of the inexpensive vibration alarm sold widely online: a small box that straps or bolts to the frame, a key-fob remote to arm and disarm, adjustable sensitivity and a loud siren. It costs very little, runs on a rechargeable battery or coin cells depending on the version, and will startle a casual thief. It is also prone to false alarms in wind or when a bike rack neighbor bumps you until you dial the sensitivity down. Treat it as a deterrent layer for low-risk parking — not as security on its own.

Best for: Budget theft deterrence · Garage or apartment bike rooms · Kids' and secondary bikes