| Label:Yes Power Supply: 3x AAA Battery Powered (not included) Package include: 1pcs Door Handle Alarm Material: Plastic Size: 6.8*1.8*13.9cm(2.68*0.71*5.47in) Alarm decibel: 120db Description: DUAL MODE SELECTION: Switch and alarm mode integrated key, push up is the doorbell, push down is the alarm sound, when not in use, the switch key resets. STRONG DETERRENT: Built-in high-loudness alarm horn, the decibel reaches 120db, making a harsh sound, powerfully deterring thieves. WIDE APPLICATIONS: It can be used in homes, rental houses, door security, dormitories, hotels, guesthouses, warehouses, shops, counters, bank counters, travel, and carry it with you on business trips. HOW IT WORKS: When | |