Item type: Alarm Lock Set
Mode: Alarm / Normal
Material: Zinc alloy
1 * Kinbar Alarm built in Block
6 * Cell batteries (inside lock )
3 * Keys
Alarm mode: open the package, the lock beam to rotate 180 degrees and then press, hear "beep" sound prompt, alarm mode. In this mode, if there is an external force to touch the lock body, the lock body sends out a shrill alarm sound.
Normal mode: lock the beam back 180 degrees and then press, no "beep" sound, general mode. No alarm sound will be issued in this mode.