Big on features, the Ring wired Video Doorbell connects to your existing doorbell wiring for 'always on' power and protection when you need it most. Featuring 1080P HD Video & Two-Way Talk with Night vision and Advanced motion detection with customisable motion zones. It has a 155deg horizontal, 90deg vertical field of view and is weatherproof. It requires hardwired installation and comes with fixings supplied. Works with Amazon Alexa and uses the Ring app for iOS and Android smart phone use. Dimensions (HxWxD): 10.1cm x 4.57cm x 2.24cm. This 1080p HD wired video doorbell also has standard 2.4 GHz connectivity and customisable privacy settings.