Blink Security System with 3 Outdoor Cameras, HD Video Doorbell & Sync Module 2. Wireless Cameras (Batteries last up to two years). Outdoor Camera Mount and screw kits. Wireless, day and night 1080p HD video, two-way audio, motion detection, alerts, and more. See, hear, and speak from the Blink Home Monitor app.Answer your door from anywhere with the new Blink Video Doorbell - install wire-free or wired. Record and store video clips and photos from your camera and view them in your Blink app from anywhere with a Blink subscription plan. Local Storage: Record and store events to the Blink Sync Module 2 in your home and view them in your Blink app from anywhere. Sync Module 2 and USB flash drive is required. Experience peace of mind at your door. Video Doorbell can be installed wire-free with powerful battery life or wired to also sound your existing in-home chime. Includes HD day and night video, motion detection and chime app alerts, two-way audio, and more. Wireless battery-powered HD security camera that helps you monitor your home day or night with infrared night vision. With long-lasting battery life, Outdoor runs for up to two years on two AA lithium batteries. Outdoor is built to withstand the elements to help you protect your home inside and out, rain or shine.