Are these Battery powered?
Are these Battery powered? If so what is the expected battery life.
Yes, CR123, 4 per camera. Life of batteries depends on motion detection settings, manual viewing, recording, and distance from base station. Also temp plays a role too, but mines are holding life good in the heat, don't know about the cold YET. I'm gonna say 3-6 months, depending on the above info. 1 of mine lasted 3, another lasted 4, the other 3 are still going.