4 Pack Door Handle Security Alarm, 120dB Vibration Anti-Theft Alert, 3-Level Sensitivity, Portable Door Knob Alarm for Travel Home Hotel Apartment

["120DB LOUD DOOR HANDLE SECURITY ALARM: Hangs In Seconds on Any Handle-Style Door or Window; Triggers a 120DB Alarm When Opened or Tampered With, Audible Up To 650 Ft (200 M) For Maximum Perimeter Security.","3 MODES & 3-LEVEL SENSITIVITY: Selectable alerts (Off/Alarm/Doorbell). Doorbell mode ideal for monitoring children/patients with Alzheimer’s/dementia; Alarm mode protects property and personal safety.with 3 sensitivity levels (high/medium/low).","NO WIRING, NO WIFI NEEDED: Powered By 3 AAA Batteries (Not Included); Simply Hang And Activate—No Apps, Subscriptions, Or Complex Setup Required. Perfect For Hotels, Dorms, Rentals, And Travel.","UNIVERSAL FIT & PORTABLE TRAVEL SAFETY: Fits most handle-style doors/windows. Compact Design Perfect for homes, rentals, hotels, dorms, shops, warehouses.,Essential travel safety accessory.","30-SECOND DELAY ANTI-FALSE ALARM:After Installation, The Red Led Will Flash For 30 Seconds As A Normal Activation Confirmation (Not A Defect) To Prevent Accidental Alarms During Setup, And The Alarm Will Trigger Instantly The Moment The Doorknob Is Touched Once The 30-Second Period Elapses."]