My front door which I want to guard is made of steel/aluminum. Would it work sensing anyone that approaches my door from the outside?
1317714
I don't know, as mine is wooden. You would need to check with the manufacturer since you have no windows near the door.
1317715
Not certain. Depends I think on how close you would have to door. Could call maker.
1317716
Yes, it does. It also senses all movement from around its position, not only in one direction which is too much. But it helps.
1317717
Yes. Mine works through metal, wood, cinder block. Wouldn't do without this. Also sent them to friends. I live in a ranch house. I have two at the REAR of my house. I put one on one side of the house and one on the other. If someone approaches, it gives the impression that the dog has moved from room to room. Also, be wise. Don't put this near a window such that someone could see it from outside.
2199878
You could definitely use it to see when motion occurs in your mailbox (i.e. someone putting mail in or taking it out. You won't be able to see if the door is "technically" open or closed unless you use the light sensor built in to the unit. Additionally, you'll want to make sure the unit is close enough to your house for the sensor to communicate with the rest of the sensors in your house.
1937164
Yes, this would work fine for that. In addition to the motion detector, use the window/door sensor... Great idea!
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!
354107
I really don't think so. It's definitely designed to stop a door from swinging. There are much better products designed specifically for patio doors. My opinion.
1657118
I would think if your door has one closer, not two, you should be fine. I have one of these on a wood storm door and another on an aluminum storm door, both with one closer and they work great.
2199879
Remember that this is only a motion detector...and it doesn't have a great transmission range...and might not work too well in a metal mailbox. As a motion detector, it'll certainly tell you when the mailbox is open; but then if you leave it open and there's no movement in front of it, it might think that the mailbox is closed.
1309077
Not sure what you mean. It is very sensitive...it will go off with the slightest pressing on the top...from either side of the door.
2034410
Since mine was apparent used and came with know directions. I put at front door and it will alarm
690511
no,not at all. It'll stop a door from swinging closed in a wind or for a door installed unlevel that tends to swing on its own.
1522329
I doubt this would be good for keeping strangers out. It might be a BIT of a deterrent, but would probably be broken through easily if they really wanted to get in. It's much better for keeping your kids from opening doors they shouldn't. Hope this helps!
1454673
NO it deters critters check walmart ...there are cheap alarms you can set to trip when you open a door or window
1009283
I see no reason why it shouldn't. I placed mine inside of my front door to my business and it works perfectly as an alert when someone enters.
2090907
Yes, It should. It is quite sticky on the back. We installed it on a door with panels. You cannot see them, but you can feel them.
1448717
I don't think the USPS will care as long as it doesn't interfere with their work. The only issue is that it works by sensing when it has turned upside-down so to speak. So it needs a mailbox door that opens up or down. Side opening isn't going to work. The other question is: Don't they load the mailboxes from the back? If you attach it to your access door in the front, that also isn't going to work. Check out this one which uses a magnetic switch: http://www.amazon.com/Safety-Technology-International-STI-34200-Transmitter/dp/B0051AC9EY/ref=sr_1_7?ie=UTF8&qid=1392501028&sr=8-7&keywords=wireless+mailbox+alert It will work with any kind of door. It just senses the magnet moving away from the sensor. You could also mount the magnet to the door in back, if need be. Might need a little cooperation from your friendly mail person while he/she has it open. I have not used the other version mentioned above. The distance to your house may be a problem, especially if the unit is buried in the middle of a big metal mailbox cluster.
2199881
I am not sure that would work. I think this device uses temperature changes to detect movement. For example, I have this right next to my front door. If I open the door (and it opens into the sensor) nothing happens, as soon as my body is clear from the door then the device detects something. Perhaps something using the contact closure module will be more effective.
2086170
I have installed the sensors on my sliding gate and my pedestrian gate. I feared that the weather may affect them, but they have been there for many months in all types of weather and have performed flawlessly. My sensors are approximately 15- 20 metres from the base unit. The answer to your question is YES (even though they are advertised as "window and door sensors")