This Lock Alarm from Skymall comes with a 24 inch cable and will alarm with a shrill of 100 decibels if tampered with. Use the cable and combination lock to secure your bike, laptop or briefcase and if the lock is tampered with or the cable is cut and a sound equivalent to the loudness of a jackhammer will bring some attention.
The Lock Alarm also has a motion sensor that can be set to go off with any movement. A short time delay lets you open the lock with the combination before the alarm sounds, but if you get it wrong a couple times get ready to cover your ears. It runs on batteries (which can only be removed when unlocked) and it retails for just under $25. While the cable is nice on this one, we’re still more partial to the looks of the Doberman.