The Link2Home Doorbell Chime Kit simply plugs into any USB power supply and connects to your Link2Home doorbell over WiFi through the Link2Home Pro app. This means you do not need to be near your doorbell or smart doorbell device when someone rings the doorbell. Small in size but big on noise, the Link2Home BellChime emits a loud 120dB alert when you have visitors. It features the option to choose from 4 different melodies with crisp, clear sound. The volume can also be adjusted within the app screen for full control and versatility. This doorbell chime for hardwired or battery connections will sync with your device over WiFi with a range of up to 20m. It is simple and easy to set up with two button presses. Reset the chime with one button press and then sync with your doorbell with another button press on your doorbell device. System requirements: WiFi connection, mobile smartphone or tablet with iOS 8 or later, or Android 4.1 or later, free Link2Home Pro app account. Pair with the Li