A. Qutdoor unit @ Remove the sowers and aluminum cover. Take down the mans plate for family mama or roam number .Open the battery cover, and load 3x AA batteries according to worked direction, then close the battery cover. last fasts the outdoor unit on the wall. A Fasten the aluminum cover. @ Fasten the screws. B.Indoor unit @ @ @ Fasten the bracket of indoor unit on the wall. © Hang the indoor unit on the bracket. @ Plug the adapter in the power jack or outlet.