Dogs tend to get poisoned very quickly when left unattended. I even heard of insect spray being used to temporarily knock them out. Then I heard of situation where water from a hose pipe was used and the dogs ran away LOL
But on a more serious note, I learned a new important fact now from XXO. He said that the infra red light source must be 880nm or higher, then it will not be visible to the intruder's naked eye.
I wonder why the field of view would become less as the range increases. One would think the opposite.
As a point aside, as anyone ever encountered a daytime distant vision device (scope) that focuses automatically linked to a phone, so that if for example one drives on a long country rode, and one wants to see far ahead, one then sticks this scope on ones dashboard, zooms in, and then one's partner watches the footage on the cel phone to see if there is a kangaroo 1km ahead in the road or a big traffic jam etc.?
Thank you to all the experienced, bright sparks here for your excellent advice. Highly appreciated.
Sounds like you’re really besieged by attackers, if your invaders would poison your dogs.
I would never suggest leaving dogs unattended. That would be very irresponsible.
But if you’re patrolling a huge ranch, you’re not leaving them unattended, you’re relying on their excellent senses to detect the invaders you’re worrying about.
You might prefer to set up an array of wifi wireless motion detector camera alarms rather than this infrared sniperscope approach to detection.
Google turns up this, which sounds like it might be just what you want, if the invaders come disguised as kangaroos:
Also some phones filter out ir, not sure about the net wet phones but i know older iPhones have an ir filter so they hardly pick up anything. They might detect the emitter if it’s aimed straight into the camera but that’s it. The ir emitter on the tv remote was a good example of how it picks up just a bit
