ABUS 440A U-lock We have had a chance to use and inspect the ABUS 440A U-lock, and we don’t know how you would ever go back to a standard lock once you’ve used one with an intelligent alarm system. The 440A is ABUS patented technology and is an iteration of the Ultra 410 U-lock. The lock gives trigger warning beeps if it is disturbed. Any continued movement will trigger the full alarm and it will continue to do so as long as movement is detected. It’s basically the ultimate bike thief deterrent. The weight is around 1100 grams (2 pounds), but includes an innovative quick-mount that allows for carrying the heft easily. There’s no price we wouldn’t pay to protect our bikes, but this is one our wallet is happy about too.