Broan IK15WH NUT-BRO Door Intercom

2-Station door answering intercom with optional door release comes with a bright white inside speaker with volume control and automatic time out privacy feature. Get added security and convenience for your condo, townhouse, apartment or small office with this economical, easy-to-install intercom. Just press the talk button to talk and release to hear reply. The two-note chime sounds when caller presses pushbutton.