Power supplyaaa battery operation voltagev5 modelwireless voice intercom doorbell support indoor and outdoor voice intercom up to 200ft work range two trasmitter and two receivers whats in the boxreceiver 1 usb cable screwdriver doorbell label 3m tape transmitter users manual pantilt horizontal degree50 pantilt vertical degree50m connectionwireless power w02 materialplastic kit configurationtwo to two doorbell additional featuressound adjustable intercom a