Door Stop Stopper Alarm Block Blocking for Home Office Travel Security Doorstop Alarm System Description: This is a new type of stainless steel cover door stop alarm, which is an effective way to stop intruders. It is small in size and can be stored in a travel bag, briefcase or wallet. Very suitable for family, office and travel. Feature: Stainless steel cover, small size. The wedge-shaped design siren prevents intruders from opening the door. Adjustable sensitivity switch can prevent tampering. Powered by 9-volt battery (not included). With 3 sensitivity levels and super loud alarm. When activated, a continuous alarm sound with a high pitch of 120 dB will sound. Easy to operate, just put it under the door. Specification: Equipment: door alarm Function: 3 sensitivity levels Size: 14cm x 4. 5cm x 4.0cm/5.5x1.7x1.57in Material: abs+stainless steel Power supply mode: 1 x 9V battery (not included) Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 1 X Door Stop Alarm