Blink Sync Module XrBlink Sync Module Xr is the first system hub to extend the range of your Blink Outdoor 4 wire-free smart security cameras so you can easily see what's happening around your entire property.Unlock even broader coverageUp to two Outdoor 4 cameras can now go even farther with Sync Module Xr's extended range: up to 250 feet away from your home in Xr mode and up to 400 feet in XR+ mode (video resolution may vary).Two-year battery lifeSet up Outdoor 4 in minutes and get up to two years of power with the included Aa lithium batteries (with regular use).Enhanced motion detectionBe alerted to motion faster from your smartphone with Outdoor 4's dual-zone, enhanced motion detection.See and speak from the Blink appExperience 1080p Hd live view, infrared night vision, and crisp two-way audio.