Once the door or window is open.
Door vibration sensor.
Eddy current sensors are non contact devices that measure the position and or change of position of a conductive component.
The sensor has a probe which creates an alternating current at the tip of.
But this versatile device can also tell you when it senses vibrations falls at an odd angle or senses temperature out of the ordinary.
As long as these two pieces are less than two inches apart the alarm won t sound.
My garage door is double width so with wind blowing i can see how the sensor was picking up movement the tilt sensor may not catch the door being opened just enough for a person to slide underneath so it would have been better to have acceleration as well to detect any movement.
Product title wireless door window sensor alarm detector burglar s.
These sensors operate with magnetic fields.
The last type of vibration sensor we will discuss is an eddy current or capacitive displacement sensor.
The smartthings multi purpose sensor knows when your doors open or close like any other contact sensor.
The front door was issuing 5 6 knock alerts a day.
Lately i ve been getting false positives.
Find door window sensors at lowe s today.
4 7 out of 5 stars based on 3 reviews 3 ratings current price 10 32 10.
It s a very solid wooden door so stray vibrations don t seem likely and i was able to witness a few while i was right next to the door and was able to confirm that there was no wind thermal expansion etc.
One end attaches to the door frame while the other end attaches to the door itself.