Wireless Network IP Camera’s
Ip camera's have been around for a while but they havn't come down in price much, probably becasue they are just so damned practical. They have built in software and a web server so you can just plug them into your network either wireless or via network cable. You can then set it up to be viewable on the web by port forwarding your modem and pointing to the camera's IP address. Whether its to keep an eye on your staff or secure your hotel or motel courtyard or even just to take a view of the weather like this one in Cairns.
This model is made for outdoor use and dark conditions. You can also power these via ethernet cable - Power Over Ethernet - which is a lot easier than paying a sparky to install a power supply next to the cameras location and you only need 1 cable for both power and network access.
Vivotek IP7330 from $230.