I am testing out a new system to monitor vacant properties, it is a combination of a few things and not designed specifically for this purpose.
The first component is a vuezone camera system. I bought mine at Amazon.com, it is also available at vuezone.com. Currently $230 for a gateway and 2 indoor motion detection cameras. A weatherproof case for the cameras is available for $32/camera.
Second, a wireless hotspot. I am looking at the truconnect mifi or the datajack mifi. I believe they are both available for about $80.
Third, a wireless bridge. I got a trendnet 640mb for $25.
The vuezone cameras can be placed virtually anywhere, they come with mounts made for attaching on a wall, but you can set them somewhere else or purchase table, window, and ceiling mounts as well. There are no power or connection cables to the cameras, they are completely wireless.
The cameras wirelessly communicate with the vuezone gateway. The gateway is designed to be connected to an internet router by ethernet cable and is not able to wirelessly connect. The problem is that the wifi hotspots usually do not have an ethernet port. That is where the wireless bridge comes in, you plug the gateway into that and the bridge wirelessly connects to the wireless hotspot, which connects wirelessly to cellular networks and internet access.
The cameras can be set to record a clip when motion is detected and send emails out to several addresses to alert you.
I've only had my system up and running for a couple hours at my personal residence to test it out, and I don't have the hotspot yet, so I am running it through my wireless router from the wireless bridge, but everything is working well so far.
The initial investment is about $335. Then there will be monthly costs of about $15 for the vuezone service and the wireless hotspot service. Vuezone has plans to have a lifetime membership of some kind available in the future, but when and how much is not known yet. These costs seem similar to many other security systems, but what I like is that I will be able to check in on my property without going there, just to make sure the furnace and ac are still there and the doors are not kicked in or windows broken. I will not have to investigate false alarms which will be good for me because some of my properties are a couple hours away and I will be able to travel as well.
There are drawbacks to the vuezone system, check out the reviews on amazon, though some of the issues have been fixed if you look at the new information from the vuezone website. I will try to update here what I find out as I continue to uses this system.