PowerReceiver plugs into standard US outlet
ButtonWireless, battery-powered
RangeVaries with walls and household conditions
Package Options1 Receiver + 1 Button or 1 Receiver + 2 Buttons
ColorsWhite or Black
Quantity ChoicesBuy 1, Buy 2, or Buy 3 sets
Indoor UseYes, for rooms like bedroom or office
Outdoor UseButton can be mounted in sheltered location