Outdoor sensor to detect yard gate having been opened

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  #1  
Old 04-12-19, 03:40 PM
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Outdoor sensor to detect yard gate having been opened

I was wondering if anyone can recommend a sensor. We have a gate in
the back yard that is usually unlocked during the day. So I was
wondering if there's an outdoor magnet type sensor that we can buy to
install on that gate that can alert us when it was opened. I see a lot
of sensors that do this, but they are all indoor. What we're looking
for is just two simple contact magnets that I can mount on that gate
and a home unit that would play a door bell type sound when that gate
is opened. They don't have to be too far apart, maybe about 50 ft or
so.

Can someone recommend something like this?


PS. I tried one of these proximity sensors.
But unfortunately it keeps going off all the time -- if the dog runs
around in the yard, if the tree rustles around, etc. So that didn't
work. It has to be a hard sensor that will go off only when the gate
is physically swung open.

Thanks in advance!
 
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  #2  
Old 04-13-19, 09:19 AM
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Welcome to the forums.

I moved your thread here to the security section. The guys here can help you better.

The reason you don't see many outdoor sensor systems is the cold kills the battery and the transmitter condenses in the cold. We'll check into it further for you.
 
  #3  
Old 04-13-19, 09:44 AM
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Thanks a lot. Yeah, I hear you. Although we're in the WA state by Seattle so it doesn't get that much cold in here. Lots of rain though.
 
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Old 04-13-19, 03:13 PM
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Optex makes a model that normally uses a motion type device, but also has door contact type transmiters. I've installed a couple, and they are pretty solid:

https://www.optexamerica.com/security-products/rctd-20u

Not the _cheapest_ solution, but works pretty well.
 
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Old 04-13-19, 08:32 PM
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Thanks. But that one you linked to "RCTD-20U", looks like another proximity sensor. I just don't want the dog to set this one off as well.
 
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Old 04-14-19, 12:16 PM
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Read the specifications. The receiver also supports door/gate contact transmitters. The components can be purchased individually, as well as in kits.
 
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Old 04-14-19, 05:19 PM
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I left a link. Look at the TC-10U. It says weather proof. I'd think I'd mount it in a plastic enclosure to keep it safe from torrential rains. It looks like it comes with a magnet for direct use or you could connect to a wired magnetic switch for a larger gate gap.
TC-10U transmitter
 

Last edited by PJmax; 04-14-19 at 08:27 PM. Reason: whoops.... wrong part number shown
  #8  
Old 04-14-19, 07:04 PM
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@PJmax: no, TD-20U is more of a proximity sensor. I went through those and even though they would be great to detect some activity in the backyard, it won't work for us because of the dog.

@MrRonFL: Hmm, I see. Do you mean installing this TC-10U on the gate itself and then purchasing the RC-20U receiver as a "door bell" for indoors? It might work. Quite expensive though. About $120 for both on Amazon.

My only concern with it is this. When I'm checking the Amazon listing for the door contact sensor it says in the description:

The Optex Wireless 2000 Door Contact / Wireless Transmitter is designed for indoor and outdoor use (not in direct rain).
It will obviously be in the direct rain. I'll mount it on the gate
 
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Old 04-14-19, 08:30 PM
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Sorry about that. Corrected my link/information.

Yes..... that's why I said I'd mount it in a plastic enclosure. This is about as good as it gets.
You aren't going to find many manufacturers selling this type of product.
Also.... I'd mount the transmitter on the fence and the magnet on the gate. Less shock abuse.
 
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Old 04-14-19, 08:49 PM
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Yeah, thanks. I see in the spec sheet that the sensors have to be no further than 1-1/2" apart. So there's not much wiggle room for mounting there. I just have to think of an enclosure though. Other than that, yep. it might work.
 
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Old 04-15-19, 04:07 PM
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An outdoor rated plastic electrical box is what I normally use for something like this. The transmitter isn't very large, and you can use external contact switches with it, some of which have more generous contact gap ratings, and just land the wires on the external contact terminals.

As pointed out, there really aren't many devices on the market that _can_ do what you want, and the Optex unit is pretty darned reliable, in my experience.
 
  #12  
Old 04-16-19, 12:13 AM
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MrRonFL Sorry, Ron, I'm probably not that well versed in all this stuff. Do you have a link I can get those external contact switched at? I'm now also trying to find an outdoor rated plastic box. That is a little bit along my pay grade
 
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Old 04-16-19, 02:19 AM
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Junction boxes similar to this are available at most home centers. They come in a variety of sizes: https://www.lowes.com/pd/CARLON-Gray...on-Box/3127463

Wide gap contact: http://www.grisk.com/images/product_...face_mount.pdf

Several manufacturers make similar contacts, this is just the brand I work with, normally.
 
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Old 04-16-19, 02:03 PM
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MrRonFL Oh, I see now what you mean. Thank you very much!
 
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