All them mamas with Nanny cams!!

I have a camera in my house and the father of our children is at my house having visitation. He unplugged the camera so now I can't see. He is there 6 hours 2 times a week. And wondering if anyone has any mini nanny cams wireless so I can hide it. and wifi that the battery doesn't die so quick. His supervision ended this week so im just full of anxiety!!!