No one likes unauthorized people sneaking in, then all the different types of security measures like alarms and cameras usually leave a smoking hole in your wallet and you need other solutions. Use this simple doorstop to trigger an alarm when the door hits the doorstop, ensuring the door becomes difficult to open. The bottom is covered with square rubber material that holds the door in place, especially when the door is pressed into the floor. The alarm is powered by a 9V battery and has a sound of 120dB, ensuring that even the heaviest of chimney sweeps will wake up. You can set the alarm sensitivity in three stages to adjust how hard the door must open to trigger the alarm, or close it completely to use it as a regular doorstop. With just a few of these you can get affordable defense against unwanted guests