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