The Ring Doorbell Chime Pro extends your Wi-Fi signal to all your Ring devices to ensure you never miss a Ring alert. Plug in to a standard plug socket and receive an audible alert inside your home when you have a visitor. The Doorbell Chime Pro connects with any Ring product via Wi-Fi and can be paired with multiple Chime units inside your property. You have the option to choose your desired volume level and select from multiple alert tones. You can also set the Chime unit to 'do not disturb' mode when you prefer not to be disturbed. For use with: Ring Video Doorbell Ring Video Doorbell - Antique Brass Ring Video Doorbell - Polished Brass Ring Video Doorbell - Satin Nickel Ring Video Doorbell - Venetian Bronze Ring Smart Video Doorbell 2 Ring Smart Video Doorbell 2 What's in the box? 1 x Ring Doorbell Chime Pro 1 x UK Plug Adaptor 1 x EU Plug Adaptor