Hello Charlie,
I want you to see the IP cameras of our company: http://www.sysvideo.cn/product/detail.aspx?id=86 , except wifi, this camera can meet all your requirements, however, this one have PoE interface, you can supply the power and internet by one cable. Please contact me if you think this one is what you are looking for.
Evelyn Zhang
Skype: sysvideo_sales3