does a hardwired ring doorbell need a battery

Battery Doorbell - Matte Mocha (2nd Gen)

Battery Doorbell - Speckled Gray (2nd Gen)

Battery Doorbell - Speckled Gray with Indoor Cam Plus White

Ring Starter Set with Battery Doorbell and Indoor Cam: Security Wi-Fi System, 2 Cameras

Ring Battery Doorbell Plus – Smart Wi-Fi Video Doorbell with Head-to-Toe HD+ Video - Satin Nickel: Outdoor Wireless Security

Ring Essential Security Set with Battery Doorbell Plus and Indoor Cam - Satin Nickel and White: Motion Activated, Controlled by Smartphone App

Ring 1080p Wireless Video Doorbell

Battery Doorbell Plus (2nd Gen)

Spotlight Cam 2K Battery - White (2nd Gen)

Battery Doorbell Pro (2nd Gen)

Ring Outdoor Cam Plus Battery 2K Video with Low-Light Vision and Flexible Mounting - White: Motion Activated, 2-Way Talk

Ring Outdoor Cam Plus Battery 2K Video with Low-Light Vision and Flexible Mounting - Black: Security Camera, Wi-Fi & Bluetooth, Motion Activated

Ring Indoor Cam Plus, Plug-In Retinal 2K for Enhanced Video Quality, 4x Enhanced Zoom, Low-Light Sight for Full-Color Night Vision

Ring Outdoor Cam (Stick Up Cam) 1080p Wireless Security Camera (Battery) 2pk: Alexa Compatible, Motion Activated, Night Vision, 2-Way Talk