The alarm function is triggered by a vibration sensor. Thanks to the "On/Off" switch, you can also transport the Trigger Alarm 345, even closed, without false alarm. The security-relevant parts of the lock body are made of hardened special steel. The comfortable "push down" cylinder ensures the bolt is automatically closed during the locking process too. 5 mm steel bolt Very easy handling due to "push down" cylinder where the bolt is moved in the locking process automatically The bolt, lock body and supporting elements of the locking mechanism are made of specially hardened steel Alarm function based on a vibration detection system Alarm of at least 100 dB The lock can be transported in the locked state without activating the detection system thanks to an "On/Off" key position Different acoustic signals indicate the battery and activity status Two keys are supplied in the scope of delivery One CR2 standard battery to supply the electronic unit is included in the scope of delivery A Memory Cable is included as a reminder