Ulac is a Taiwan brand found in 1982. Contribute to developing reliable, safe but user-friendly lock.


This Bangdogge steel shackle lock is the most secure  lock with 110dB Alarm certificated as 8 security high level.


The Bangdogge combines the strength of an anti-cutting hardened steel shackle with an easy-to-set, one touch 110db alarm for both resistance and deterrence.

It will protect your bike in the toughest neighborhood from urban to suburban suitable for E-Bikes and Assist Bikes.


  • Shock Alarm of 110dB
  • Includes transportation bracket system for versatile carrying
  • Anti-Dust lid protects cylinder
  • Heat-treated hardened steel shackle with ULAC signature Silicon Overmoulding prevents scratches
  • Ultra performance steel shackle resists cutting and attacks
  • High Security Abloy Keys with up to 2000 unique key combinations
  • Ideal for high-theft area
  • Sold Secure, UK Bronze accredited



Brand: Ulac

Color:  Matte Black

Shackle Dimensions (inner): 83mm x 153mm or 3.2in x 6in

Shackle: 13mm lightweight aluminum shackle

Weight: 1055g. / 2.3lbs (lock only)

Battery: LR44 x 4



Design in Taiwan. Made In China.

Ulac BANGDOGGE Shackle Alarm Lock