Not sure if a wifi megapixel camera makes sense outdoors. It still needs power, so as long as a cable is needed it may as well be a PoE cable connected to a PoE switch.
Besides, a 2.4G 802.11n wifi is limited to about 35-40 Mbit/s in good conditions which will probably be enough for max 8 Hikvision style cameras (5 Mbit/s/camera).
Besides, a 2.4G 802.11n wifi is limited to about 35-40 Mbit/s in good conditions which will probably be enough for max 8 Hikvision style cameras (5 Mbit/s/camera).