Abus Alarmbox 2.0 Locking Alarm System With Adaptor Chain – 3.2″. The Alarmbox 2.0 can be easily attached to round tubes for example on the bicycle frame and secured by means of a key. A short 5-second warning sounds in case of slight impacts or movements. In the event of a persistent theft attempt the 100 dB loud alarm is triggered. The electronic device unleashes an intelligent shock- and motion-sensitive alarm for your property.