Camp alarm - this item may help to keep things secure.

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Problem with Greenhornet's idea is that it runs on an infra-red Beam... Easily Detected with an Infra-red beam Detector or Night-vision scope..... Both Available off the net or Jaycar has them... :cool:

LW...
 
LoneWolf said:
Problem with Greenhornet's idea is that it runs on an infra-red Beam... Easily Detected with an Infra-red beam Detector or Night-vision scope..... Both Available off the net or Jaycar has them... :cool:

LW...
Greenhornets device is a PIR - Passive Infra Red device ....... being passive it does not transmit infrared. It only receives infrared. It relies on an infrared sensitive sensor that in its simplest form has a positive side and negative side (there are more sophisticated quad sensors but I won't over complicate the theory explanation). If the ambient infrared red is stable i.e nothing moving the amount of infrared that hits the positive side is the same that hits the negative side and the signals cancel out so there is no triggered alarm. However if something moves through the field of view there is a positive signal followed by a negative signal, or vice versa, and an alarm is triggered. Only problem is anything moving could trigger an alarm, particularly animals or even bushes. You have to be careful what you have them looking at. They typically have adjustments so you can desensitise them by setting multiple +\- pulses before an alarm is triggered.
It's an interesting fact that everything around us transmits infrared. Something has to be at minus 273 degrees Celsius, absolute zero in degrees Kelvin, for it not to transmit infrared. Infrared is basically light radiation caused by sub-atomic movement.
 
Well that explains a few things... Thanks Dig'n-it... Don't think I would be outside when it's -273deg... bit too cold for Me.. :D

LW...
 
I thought something wireless with range and portable, easy setup.

Would fit the bill, yes passive and you place them where you want them to avoid false trips and cover your gear.
Built for the field with hunting in mind, gives an early warning on animals approach via game trails.

For the price its not bad.

Tempted to get some to stop the kids raiding the fridge, or jumping on me when I'm asleep. :lol:
 
the best device and cheapest is the alarm padlock from bunnings for about $25, the noise will deter the thief, the game tail cameras are good in the day but night range is limited to how dark it is , the infa red lights glow red, so theres a chance while your snoozing they will steal it as well
 
Yeah, probably. ;) :Y:

Save money and buy the kit includes 6 blanks & full roll of 156ft military surplus trip wire. New improved design. Tighter fit and feel and rust resistant assembly! 12 ga perimeter alarm device. A basic trip alarm device that can be used hundreds of times in many different ways for real security or fun.

Fun alright! :)
 
the game trail cameras are on sale at ALDI again at $129 completely invisible with picture or video settings but at night, whilst the operating mechanism is PIR, they light up like a christmas tree with the infa red light glow to allow the camera to function, yep you can find these devices with infared detectors at night , sorry all you surveillance specialist with cameras installed wherever,
now for the $23 bunnings siren locks I have a number of these , they work well , now once you have more than one , you will need to paint an id on each one, otherwise , you will set the thing off by installing the wrong key in it as i have done , now for the american 12 gauge device ,
totally illegal in the land of AUS same with rabbit traps, just buy the siren locks and with a good lenght of chain to suit the job they do work as a deterent,
if they want to pinch your gear, nothing will legally stop them
 
Hi LoneWolf, great idea, I had petrol stolen out of my trailer up at Lightning Ridge several years ago, it was by opportunist type scum, get what they can in a very short period of time. I fitted an alarm to my trailer after that, and padlocked removable items with high tensile chain. I still have that alarm maybe I can rig something up to protect camp while I'm out.
 
Mike Marsupial said:
Yeah, probably. ;) :Y:

Save money and buy the kit includes 6 blanks & full roll of 156ft military surplus trip wire. New improved design. Tighter fit and feel and rust resistant assembly! 12 ga perimeter alarm device. A basic trip alarm device that can be used hundreds of times in many different ways for real security or fun.

Fun alright! :)

:bomb: BOOM! :D
 

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