If you do not have internet, then you will not have remote access to the cameras. Otherwise, the system will perform exactly the same as it would anywhere else. Wireless cameras with an analog system (like a DVR) are not reliable at all so we do not offer them. If you really want to go wireless with a DVR, you can install any DVR and cameras you want but you will need to purchase separate wireless transmitters and receivers for each camera. Keep in mind these will still need power and the thieves will be able to target the cameras just as easily as they can target the DVR. If you had internet, the DVR could notify you via email when motion occurred, or if a camera went down so that you could catch them in the act, but since you do not have internet you will have no way of knowing. 

If you are intent on wireless, then I would recommend an IP camera system. You would first create a wireless network using a wireless access point. You can then place the NVR anywhere in reach of the network and you could either plug it into the network or use a wireless access point to connect it to the network without wires. Same with the IP cameras. We do sell wireless IP cameras for indoors. Or you can use any of our IP cameras and you can use a wireless access point to connect it to your network without wires. We also sell outdoor wireless access points. The other advantage to IP cameras is the resolution. You will be able to get much better resolution going with IP cameras than you could ever get with analog cameras and the WIFI technology is much more dependable than wireless analog.