Security accessory for bicycles, e-bikes and scooters designed to warn off would-be thieves with a loud alarm. Fosmon Bike Alarm gives riders peace of mind through audible alerts and adjustable sensitivity for urban and suburban parking. Is that level of protection the right fit for daily commutes or occasional rides?
⚡ At a Glance
- • Alarm Volume: 113dB siren with three selectable volume levels and vibration-triggered activation
- • Best for: Commuters, e-bike owners and scooter users who leave vehicles unattended
- • Not ideal for: Users seeking GPS tracking or integrated smart-home connectivity
Vibration sensing triggers a high-decibel siren to alert nearby passers-by. Tilt-based SOS activates when the unit is tilted beyond 45° to signal an accident.
Clear theft deterrence - with a 113dB siren
A vibration sensor detects movement and triggers an audible siren rated at 113dB; three volume levels allow the alert to be scaled for surroundings. Sensitivity can be set across seven levels to match how secure or exposed the mounting location is.
Loud alarm grabs attention quickly, discouraging casual thefts. Adjustable volume and sensitivity reduce false alarms while keeping protection effective.
Accident alert capability - thanks to tilt-detect SOS
An SOS function uses a tilt threshold, activating when the unit tilts more than 45 degrees from its original position to emit a beeping SOS. The system distinguishes normal vibration from tipping by relying on the tilt angle trigger.
Automatic beeping can attract help after a fall or collision, useful for lone riders or on quiet routes. Manual intervention is not required for the SOS alert to activate when tipping occurs.
Flexible installation and multi-purpose use - with adhesive, ties and brackets
Mounting options include supplied adhesive pads and cable ties, with brackets on the rear for secure fixing to frames, trailers or luggage. The alarm pairs with up to eight remote controls for shared access across users.
Quick fitting options let users attach the alarm to bikes, trailers or luggage without specialist tools. Multiple remote pairing lets household members arm or disarm without transferring a single key.
✨ The 4 Key Reasons for Fosmon Bike Alarm
- Remote pairing - Allows up to eight remotes for shared control without handing over keys
- IP65 waterproof - Keeps the unit working reliably in rain and wet conditions
- Simple mounting options - Supplied adhesive, ties and brackets for quick, tool-free fitting
- Multi-purpose use and warranty - Suitable for bikes, trailers and luggage, with a limited lifetime warranty
📋 Technical Details at a Glance
- Category: Electronics
- Brand: Fosmon
- Product ID: B07PQ92SHC
- Alarm Volume: 113dB
- Sensor Type: Vibration sensor with tilt detection
❓ Frequently Asked Questions
Q: Is the alarm weatherproof and suitable for outdoor use?
A: Yes, the unit has an IP65 rating, which protects against water jets and keeps it suitable for outdoor mounting in wet conditions.
Q: Can the sensitivity be adjusted to avoid false alarms?
A: Yes, seven sensitivity levels can be set manually to suit the mounting location and reduce false triggers from minor disturbances.
Q: How many remotes can be used and is installation difficult?
A: Up to eight remotes can be paired for shared access, and installation is straightforward using the supplied adhesive pads, cable ties or mounting brackets.
🏆 Our Verdict
Suitable for commuters, e-bike owners and anyone who needs an audible layer of security when leaving a bike unattended. The loud 113dB siren, adjustable sensitivity and tilt-activated SOS make it a practical deterrent and accident alert for everyday use. While cheaper alternatives exist, robust mounting options and a limited lifetime warranty suggest solid long-term value.
