Portable Wedge Shaped Door Stop Alarm Home Travel Security System Wireless Alert Burglar 120db Features: Made of stainless steel and ABS plastic material, which is sturdy and durable, always protecting your safety. The bottom adopted anti-skid pad to increase friction and prevent thieves and criminals from entering. Anti-theft, security protection, easy to carry and convenient e. Small size and wedge shaped anti-skid design, it is suitable for any hinged door. There is sensitivity controller on the side that you can select high/middle/low sensitivity. 120db treble alarm, when someone is ready to invade the room, the alarm sounds back, scares off the intruder, and reminds the owner and relevant security personnel. This door stopper alarm is a secure alarm device widely used for home, apartments, office or hotels. Specification: Condition: Material: Stainless steel, ABS plastic Color: Black + white Alarm Volume: 120db L: Low sensitivity M: Middle sensitivity H: High sensitivity (Vibration alarm) Battery: 6F22 9V battery Size: 14 * 4.5 * 4cm / 5.5 * 1.8 * 1.6" Package Weight: Approx. 115g / 4.1oz Package Included: 1 * Door Stop Alarm