Is it sensitive enough to detect a mild knock on a wooden front door?
778663
Depends on your definition of 'mild'. I have one attached to my basement door. Sometimes I go by it and kick. It alarms.
778664
I think it depends on how secure your door frame is, and how mild you're knocking... the sensor requires a decent vibration. For example, I have one in my mailbox, and thunder will sometimes set it off. Other times, a garbage truck would. If your sensor is on the door (vs the frame), and(/or?) your door wiggles in the frame, then maybe...
918256
No, it's not a vibration sensor, it is only triggered when the window is opened.
447114
I have the sensor nailed to a tree about three feet off the ground. It is very sensitive. I think installed at an angle above the garage would work. The receiver in the house works very well and beeps three times everytime something passes the sensor, could be a car, animal, or garbage man. Do not put the receiver near metal like a microwave it seems to block the radio waves. Also when the transmitter is rained on sometimes you get false readings. I put a plastic shroud over the top made from a yogurt container. Overall I am very pleased with the product and for the price it is a very good value. I highly recommend this product. I have the sensor nailed to a tree about three feet off the ground. It is very sensitive. I think installed at an angle above the garage would work. The receiver in the house works very well and beeps three times everytime something passes the sensor, could be a car, animal, or garbage man. Do not put the receiver near metal like a microwave it seems to block the radio waves. Also when the transmitter is rained on sometimes you get false readings. I put a plastic shroud over the top made from a yogurt container. Overall I am very pleased with the product and for the price it is a very good... » Read More I have the sensor nailed to a tree about three feet off the ground. It is very sensitive. I think installed at an angle above the garage would work. The receiver in the house works very well and beeps three times everytime something passes the sensor, could be a car, animal, or garbage man. Do not put the receiver near metal like a microwave it seems to block the radio waves. Also when the transmitter is rained on sometimes you get false readings. I put a plastic shroud over the top made from a yogurt container. Overall I am very pleased with the product and for the price it is a very good value. I highly recommend this product. « Show Less
156283
Absolutely. We used it to monitor my Mom's hospital bed. Dad's was right next to hers and it only alarmed when she got up. My Mom is deceased do now we use it for exactly the application you asked about. We keep it on a bar by the front door. It alarms if Dad crosses it to the door, but not while the rest of us walk around the room. Just direct the beam to the area you need as though there is a string from the device to a point across the room. This thing is very much worth the money!
851078
I'd estimate that it detects movement about 10 feet away. I have it installed over the door and it lights up when i'm about 10 feet from the door.
1724502
Not necessarily. They are designed to pick up vibrations such as would occur when someone bangs on the frame or glass or if the window pane is broken. You would be better served if in addition to this type of alarm you installed the type that is specifically designed to activate when window is opened. Amazon sells those also. Again I would recommend using both.
2060982
It will still work fine. In fact, you will only need to attach the sensor side since the magnet will cause it to stick to the door. Since the alarm only goes off when the door if open there will be minimal interference so long as you do not place the receiver directly behind where now open door is between the transmitter and receiver since the signal will now have to bounce around before being received.
2098535
Yes. It is about as loud as a fire truck siren if toy are standing next to it though. And was very sensitive. Our door has a bit of a wiggle, when the wind blows the door moves slightly, it set the alarm off several times. I returned it. But yes it works worth any motion on the door, in or out.
1300861
Yes.It is as sensitive as you want it to be.You can adjust the sensitivity so it detects very small and very distant earthquakes before the major shaking hits your house.It was so sensitive that when I was in Los Angeles I had to turn it way down.
2198805
It might if the door was jarred or thumped hard enough, but I suppose if they were able to do it gently, then no. Just my guess, haven't tried it personally. :) I've triggered mine mistakenly on occasion by bumping it or hitting it with the dog's fetch toys, but it's smart enough not to sound when the sliding glass doors are opened. Ultimately I think these alarms are designed for sounding upon breakage of the glass, they are definitely a good deterrent in that regard, but for covert entry through doors being opened(or removed) they probably won't fare so well, unless it was done in a forceful enough manner. Hope this info helped!
1867851
It is very sensitive. You may want to read some of the funny reviews about the FBT. But otherwise I would say yes it should work in a small area.
223666
Yes. There is a test mode which when activated chimes when any alarm is triggered (window, door and motion detector).
339510
This unit is touchy...but it will detect wood, metal and electrical. It is vital to calibrate it each time before you try the actual scan I place the unit against the wall and my other hand on the same wall this helps to calibrate it. After it settles you can start your scan.
1643883
You have to have a sensor and know how it works with power and ground, but it will sense a door opening too.
1416732
Yes it works. My door bell is on the first floor and the bell is on the second floor. However, it is not a "motion detector" or at least I don't use that feature (if it exists on this model). A guest needs to press the door bell.
1937164
Yes, this would work fine for that. In addition to the motion detector, use the window/door sensor... Great idea!
259389
The sensor is VERY sensitive. I have one mounted under the kitchen counter. I had to use black electrical tape to block about 95% of the sensor, to keep it from activating when getting near the counter. The tile back splash was reflecting my movements from a few feet away.