Mitaki-Japan ELDRSTP Door Stop Alarm

this is the maitake Japan doorstop alarm and here's how it works you set this alarm on the ground in front of a closed door and you want it to be under the side of the door in the direction the door opens so if the door opens this way you'd want the door to be moving on the alone like this you set it on the ground in front of it you turn the alarm on and then when someone goes to open the door while this is on and it's either gonna let you know that someone's there let your neighbors know and especially it'll deter them to want to just run away so just to get into some specs it's five and a half inches long and it's and a half tall and an inch and three quarters wide and it's kind of stainless steel cover there's a sensitivity adjuster on the side so if you want it to be highly sensitive or just to require a lot more pressure you can adjust the sensitivity here for high medium or low th