Product DescriptionThe doorbell expansion station is an add on unit that allows an intercom system to receive calls from a second entrance such as a side door gate or service entry. It connects to the same wiring as the main station and sends a call signal to the indoor monitor when a visitor presses the button. The station includes a clear easy to press button and a space for a name label so the entry point can be identified. It is built from durable weather resistant material so it can be installed outdoors and includes a small light around the button to help visitors find it at night. This expansion station is useful in homes and small buildings that have more than one entrance and need a simple reliable way for visitors to call inside.