Perimeter Alarms

[Overload]

Saw a driveway alarm that would notify you if someone drove up.  If it was an infrared motion detector, you could place it anywhere. 
I think these  motion detectors that light up are handy.  The light doesn’t have to be connected. For example, you can buy a 110v outlet that screws into a bulb socket. Then run an extension cord to whatever you want to go on when something is seen.

[Jim Kennedy-ar154me]

If you had access to a lathe you could easily make them. Like most things that require machining, it wouldn't really pay to make one or two. If you had a few people who wanted to go in on them, you could make a couple dozen and it would be worth it. On a CNC lathe, once you take the time to write the program, you can make 50 as easily as you can just one.

I have a mini-mill and a small metal lathe. Just not the experience to use them yet!!

[Big Frank]

Frank I like that.  It looks like a good price.  You can get 100 of the 22 blanks on Amazon for $8.00.  I see on the manufacturer's website ( http://www.americanspecialtyammo.com/12_Gauge.html ) you can get 50 of the 12 gauge flash bangs for $76.  Shame on you making me spend money...my wife is going to be soooo verrrrry mad at you.

I can see using a layered approach with these.  The little 22's vs. the 12 gauge flash bangs.  I'll have to think of it a bit, but I like the blank noisemakers in close and electronics out a bit.  Most likely I'll put the 12 gauge in really close...but maybe not...gotta think about it some more.     

Les, there are some like this HTZSAFE ( https://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Delectronics&field-keywords=htzsafe
https://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Delectronics&field-keywords=htzsafe ) that transmit up to 1/2 mile (I'd cut that back to 1/3...just because I don't believe sales claims) that are solar charged and hookup to their own "base" unit.  From a cursory look their budget base appears to accept 16 simultaneous alarms (32 sensors) whereas their best model can track 8 sensors (4 perimeters) and alert you by varied sound as to which perimeter is breached. 

The HTZSAFE seems to be what a guy wants (considering user ratings) but is a little pricey.  What I don't see is a really good discriminatory alert where you can track many perimeters and get both an audible and visual display.  It would be great to have a dozen or so perimeters and be able to number and NAME them for a discriminatory alert.......along with the other things that this brand seems to offer.

My thinking is that the 12 gauge blanks or flares at the outer perimeter could scare people away, and the .22 blanks further in would let you know they're still coming. Having the loudest blanks at the longest distance and the others closer would allow you to hear both of them more easily than the other way around. But the perimeter around my yard is so close I can almost hear my neighbors fart, so I'm no expert.

[bulldog75]

UPS man wears brown pants for a reason. 

[PegLeg45]

UPS man wears brown pants for a reason. 

 

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[alfsauve]

.... The light doesn’t have to be connected. For example, you can buy a 110v outlet that screws into a bulb socket. Then run an extension cord to whatever you want to go on when something is seen.

I did this.  Mounted two behind the mail box, hidden by a bush.  One pointed at the front yard and one down the drive way.  Daytime there were false alarms by squirrels and birds, but at night it was great.

I ran the 120vac line back to the house and connected it to a doorbell transformer which I then connected to my doorbells.

DING DONG.  Somebody's either coming down the drive or they're TPing my front yard.  Surprised so many teenagers I had a reputation at the local HS as the father who never slept.

[alfsauve]

I picked up those wireless infrared motion detectors at Norther Tool on sale.  Got two sets on the same frequency.  One is pointed up the driveway and one at the parking area.  For cheap $10 devices they've worked well.   On clear cold days they do alarm with a passing car, but primarily we use them for when we're expecting company.

Beam detectors would still pick up some birds (unless the detector has an anti-falsing delay built in) and of course larger animals, which transit our yard on a nightly basis. 

There also camera based alarms that sense motion in the video and then set off an alarm.  Their advantage is you can then access the video as well as the recording later.

[Solus]

I picked up those wireless infrared motion detectors at Norther Tool on sale.  Got two sets on the same frequency.  One is pointed up the driveway and one at the parking area.  For cheap $10 devices they've worked well.   On clear cold days they do alarm with a passing car, but primarily we use them for when we're expecting company.

Beam detectors would still pick up some birds (unless the detector has an anti-falsing delay built in) and of course larger animals, which transit our yard on a nightly basis. 

There also camera based alarms that sense motion in the video and then set off an alarm.  Their advantage is you can then access the video as well as the recording later.

Take Joe Biden's advice....connect the monitor to a recording that starts with the racking of a shotgun and a voice saying  "ON THE GROUND!... Move and you're dead."

[PegLeg45]

Take Joe Biden's advice....connect the monitor to a recording that starts with the racking of a shotgun and a voice saying  "ON THE GROUND!... Move and you're dead."

And if'n they run, Ol' Greasy Joe had even better advice, just shoot 'em through the door with a shotgun.
 

[billt]

https://www.youtube.com/watch?v=iJBezRwxhXA