Alarm Siren. When you hear the sound "Ge, Ge, Ge. " the alarm will sound for less than 10 seconds. Fits the majority of motorcycles and bikes with disc brakes, where the brake rotor is less than 7mm (1/4") thick and cross-drilled.
eBay
Bicycle Anti-theft Alarm Lock with Wireless Remote Control MTB Bike Anti-Theft Vibration Alarm Bike Alarm Lock
Aliexpress UK
This is a multi-purpose vibration alarm. The alarm will sound when it is triggered by vibration. Easy to set whether the alarm is triggered by a light touch or a hard shake. IP54 waterproof, no fear of rain or snow.
eBay
Bluetooth Bike Motorcycle Anti Theft Lock Alarm Waterproof Burglar Vibration Bike Alarm Lock System Security Smart APP Control
Aliexpress UK
4 Modes: Arm / Disarm / Panic / Doorbell Mode for flexible operation. Alarm Power: Requires 2 x AAA batteries (not included). Remote Power: 12V/27A alkaline battery (included). Key Features.
eBay
Motorcycle Bicycle Alarm Lock Scooter Bike Anti Theft Security Disc Brake Locks 110dB Loud Warning Reminder Rope Wheel Padlock
Aliexpress UK
It provides a loud alert to help prevent theft and enhance security. With its compact and lightweight design, it can be easily installed on bikes, doors, windows, garages, and more. It can also function as a doorbell with a “Ding Dong” sound when vibration is detected.
eBay
1PC Bike Alarm Lock Remote Control Antitheft Bicycle Bike Alarm Alerter Super Loud Rainproof Burglar Alarm
Aliexpress UK
The keyless press to lock, once the touch vibrates, there will be a warning beep first, and the continuous touch will continue for 15 seconds of the alarm sound. Button battery, plenty of power, easy to replace.
eBay
Rockbye Bicycle Alarm Security Lock with Wireless Remote Anti-thief Bike Motorcycle Alarm Lock Outdoor Cycling Safety Device
Aliexpress UK
Keyless Locking: The locker can be easily engaged with just a press of a button, without the need for keys, providing. High-Decibel Alarm: In case of theft, the wheel disc brake alarm lock will emit a loud alarm sound of up to 110 decibels, alerting you and deterring potential thieves from stealing your vehicle.
eBay
1pc Bike Alarm Lock Remote Control Bike Wireless Remote Control Vibration Anti-theft Alarm Rainproof Burglar Alarm Cycling Part
Aliexpress UK
Newly upgraded built-in battery bike detector alarm, no need to replace the battery, save money. Multifunctional vibration trigger alarm, suitable for bicycles, motorcycles, electric bicycles, etc. Alarm battery: 500mAh.
eBay
Bicycle Alarm Lock 130dB Anti-theft Waterproof Motorcycle Lock Disc Brake Lock Intelligent Controllable Motorcycle Alarm
Aliexpress UK
A DEFINITE DETERRENT - The high-pitched alarm system is a definitive deterrent to would-be thieves.
eBay
Motorcycle Bicycle Lock Alarm Safety Lock Bike Lock Protection Aluminum Alloy Anti-Theft Disc Brake Lock moto Accessories
Aliexpress UK