Cheap Security Cameras

Your answers may save hundreds of my uncles pigs.
Uncle, if a farmer (as you probably guessed) and it raises hugs, someone in the air go out at night and poisons the hugs.
he locked the barn all the time, but the brakes Guy locks with a hammer. My uncle has also held the detection of movement throughout the barns, but they do not contribute because hes not at home at night to see them.
So my question is what is least expensive setting up security camera system.
he would prefer a motion detection, night vision, and inviolable.

Check Electronics Fry. If you go to their website, on the left near the top of the screen in the tabs, select electronics, and security, CCTV ... You want to look through CCTV kits or recording or wired or wireless Cameras. Those listed on the outside will be marked "outside" or "inside / outside". Those who have night vision built emmiters infrared lights when ambient light is low enough.

The 4-channel (they also come in 8, 9 and 16 channels) DVR surveillance generally have a menu that allows you to select an area of motion detection in video images. Normally, the video is captured in an image every 4 seconds - but when the ground motion detection senses motion, the video goes real-time video capture.

As for "inviolable" if you put them up right, you get video of the wrong person before they can destory the camera. The trick will be to locate surveillance DVR somewhere they can not find it - or high enough where they can not reach it - or see. However, DVR surveillance could be inside the house and not with the pigs in this case, longer cables are needed to carry out the barn to the house. Some DVR surveillance capabilities have IP address - which means they can be part of a computer network (including Internet) and be accessible from any computer with appropriate security. All recorders have a digital surveillance monitor "output so that they can be connected to a TV AV-input.

Lorex, Swann, Clover and decent gear to monitor quality consumer.

You can configure the camera and a video stream very little cost - and have that stream video from a computer. To do this, you will need an IP based security cameras. There are not many "outdoor rated" IP cameras ... and they are expensive.

This does not mean good neighbor! I say close because it is the person who has the best chance of knowing when your uncle is and is not at home.

I would say get a couple of large dogs.