Wireless Network Cameras operate on the IEEE Ethernet 802.11b/g standard and are compatible with all wireless routers and access points which meet these standards. The theoretical maximum distance for wireless transmission is several hundred metres, but in practical terms this distance is significantly reduced if there are obstructions, eg walls, in the way. Wireless IP Camera connections are suitable for indoor, short-distance transmission, but require additional equipment, eg outdoor antennas, for other installations. In many installations finding a suitable mains power point can be as difficult as putting in a network cable. We often find that Power Over Ethernet is a better alternative to wireless network cameras.