Features: 1.Material: This lock is made of iron material, and provides maximum protection against scratches and wear and tear, it is sturdy and durable. 2.Alarm Settings: Press the lock lever into the lock hole, when the "beep. ..." sound indicates that the alarm has been set, and after 10 seconds into the alarm state. If the reverse insert no sound, the setting is non alarm locking mode. 3.Safety Protection: The locking beam is quenched and processed with thickened locking beam, which is not afraid of violent opening by cutting pliers and pry bars. 4.Wide Application: Can be used for doors, windows, bicycles, containers, motorcycles, tricycles, sliding doors, gardens, etc. 5.Advanced Design: The inside of the alarm sound hole is waterproof, and the lock core using the idle lock core design, the structure is precise and complex can not be deciphered. Specification: Item Type: Security Alarm Lock Material: Iron Battery type: Button battery x6