http://homesecuritystore.com/ezStore123/DTProductList.asp?p=2_1_1_1_0_0_210
http://www.smarthome.com/prodindex.asp?catid=193
not cheap, but you want something reliable (and preferably with infrared imaging so you can actually recognize the face).
good luck.
http://www.smarthome.com/prodindex.asp?catid=193
not cheap, but you want something reliable (and preferably with infrared imaging so you can actually recognize the face).
good luck.