This surface mount video doorbell is perfect for installations that only have 2 wires available at the exterior location and Wi-Fi will not do. This kit comes with the Doorbell, the indoor unit (that has connections for 2-wire and PoE, and an angle bracket. Features a large unmistakable button with R/B lightring, onboard relay, 2 inputs, BLE, 1080P camera with white light and AD/AC for plug & Play configuration