Blink Sync Module XR is the first system hub to extend the range of your Blink Outdoor 4 wireless smart security cameras (up to two) so you can see what’s happening around your entire property with ease. | Enjoy 4x the coverage - Install cameras up to 1000 feet (open air)/400 feet (typical use) from your Sync Module XR, which is 4x farther than Blink cameras operating on WiFi alone. | See live view 20% faster - XR technology runs on the 900MHz band, avoiding typical WiFi congestion, and unlocking 20% quicker access to live view, even at long distances. | Experience a 70% more reliable connection - XR cameras experience up to 70% fewer disconnects than when operating on WiFi. | Get two-year battery life, even at long range - Blink's patented chip technology unlocks up to two years of battery life when used with a Sync Module XR and Energizer Lithium AA batteries (both included). | Put home in your hands - Control up to 10 Blink devices from the Blink app making it easy for you to arm, disarm, and use a group of your cameras together. | Save and share clips - Choose to store events conveniently in the cloud with a free 30-day trial of the Blink Subscription Plan or locally with the Sync Module XR and a MicroSD card (up to 256 GB - sold separately). | Works with Alexa - Connect to an Alexa-enabled device to engage live view, arm and disarm your system, set motion-trigger routines from long-ranges, and more using your voice. | Includes four Outdoor 4 cameras, one Sync Module XR, eight AA lithium batteries, four mounting kits, one USB-C cable, and one power adapter. Blink MicroSD card for local storage sold separately.