Door Stop with Built in Alarm

A very affordable wireless security system. 
A door stopper that rings out an alarm when the door is opened.
Use it as a normal door stopper or as an alarm system with the On/Off Switch.
The rubber grip underneath prevents sliding.
You can also adjust the sensitivity level of the alarm before the alarm sounds.
This is a super alarm for the home or office as the alarm will be activated the minute the door is opened.
Operates with a 9Volt battery (not included) so No Installation is needed.