Wedge Door Stop Security Alarm with 120 dB Siren Door Stoppe Great for Home, Travel, Apartment or Dorm(2 Pack)

"New Portable Security Door Stop Alarm for home, office or traveling. Function introduction: This is a stainless steel cover door stop alarm. Just put the alarm under the door and turn on the switch. It is the high damping rubber at the bottom which can prevent the door sliding when any intruders attempt to enter,? The unit will wedge underneath the door and trigger the alarm? intruders will have no idea about that. Feature: 1. Wedge-shaped design alarm stops intruder from opening door. 2. Easy to operate, just put it under the door. 3. Adjustable sensitivity switch prevents tampering. 4. Features 3 sensitivity levels and extra-loud alarm. 5. 120dB high-pitched continuous siren when it is activated. Parameters: Color: Silver and black (as shown in the pictures). Material: Stainless steel cover/Plastic body/Damping rubber bottom. Working modes: Vibration sensor. Volumn of the alarm: 120dB. Three sensitivity: High, Medium, Low. Battery: 1*9V battery. Size: 5.9*2.36*1.77inch. Net weight: 0.24Ib(109g). Note: Powered by one 9-volt battery( Not Included). "