If you have a Sync Module, now is when to add it (of course, you can also add it later). If you plan on having multiple cameras with the Blink system, you'll need the Sync Module.

The Blink Sync Module XR lets you place the Blink Outdoor 4 up to 400 feet away from your home, giving your security system additional flexibility.

Reviews Blink Sync Module XR review: Network storage on a budget If you’re using Blink home security cameras—particularly the Blink Outdoor 4—you need this gadget on your network.

In addition to extended range, Blink Sync Module XR serves as a centralized system hub that allows customers to better manage and control Blink cameras from the Blink app. It creates a seamless ...

The Blink Outdoor 4 wireless security camera system is $52 at Best Buy (was $130). 2-camera system includes HD video, 2-way audio, motion alerts, and a Sync Module Core.