Upgraded Door Stop Security Alarm with 120 Decibels，Great for Traveling Security Door Stopper Doorstop Safety Tools for Home Apartment Security Door Stopper(Pack of 2)

Description

Make sure the on/off switch is in the "off" position. Turn the unit upside down and open the battery compartment Install one 9-volt battery and close the compartment.Turn on the switch.Simply place the pressure-sensitive door stop alarm at the base of any door.The 120-decibel alarm warns you and your neighbors of a forced entry. The alarm is activated when pressure is applied to the top of the device when the door is opened. A sensitive trigger switch prevents intruders from bypassing the alarm by sounding the siren no matter how far the door is opened. Note: The gap between door bottom and floor should be 1 - 3.5cm Specification: Power by: 9 v battery (not included) Single size: 5.5 * 1.8 * 1.5 inch Single weight: 0.28 lb Package includes: 2 x Door stop alarms (9v battery is not included.) note: This gap between the bottom of the door and the ground should be 1 – 3.5 cm