The Energizer Connect Wireless Chime works in tandem with our WiFi Video Doorbell. The Wireless Chime ensures that you can hear when a visitor rings your Video Doorbell by. Simply plug this device in to any 5V outlet in your home and pair it with your Video Doorbell to hear a chime when the doorbell is rang. You can connect multiple chimes throughout your home to ensure that you will always hear the bell when someone is at the door. You can choose between 4 different chime sounds to customize your experience.