Amazon.com: Portable Alarm Door Stopper 80dB Anti Theft Security Mua MBBEST Portable Door Lock & Door Stop Alarm,Dual Protection StaySafe Lock Portable Door Stopper & Alarm System QEEYON Door Stop Alarm & Portable Door Lock Set, 120dB Door Stopper Portable Anti Theft 120DB Alarm Door Stopper with Smart Sensor. Introducing the StaySafe Lock, your ultimate portable door stopper and alarm system. Designed for use at home, in hotels, or in apartments, this anti theft security device provides instant protection by preventing unauthorized entry and triggering a loud alarm to deter intruders. Material: High Durability Metal Size: 120. 00 x 88. 00 x 88. 00mm (4. 72 x 3. 46 x 3. 46 inches) Alarm Volume: 80 100dB Loud Alert Detection Type: Smart Vibration Sensors Power Source: Battery Powered (No Wiring Required) The StaySafe Lock is ideal for anyone seeking a reliable security solution. Simply place it at your door, and it will alert you to any unauthorized attempts to enter, making it perfect for travelers, students, or anyone living in shared spaces. Details: Lightweight and travel friendly, the StaySafe Lock is designed for quick setup without the need for tools or drilling. It works with most doors, ensuring compatibility wherever you go.