Amazon's Prime Day sale officially begins tomorrow (June 23), but some deals and discounts are already live, including this Blink bundle with a video doorbell, an Outdoor 4 camera, and a Sync Module Core for just $27.99. That's down from $139.98 and, according to price trackers, the lowest price so far. For apartments, townhomes, or smaller houses, it's a practical setup—the doorbell can cover your front entrance, while the included Outdoor 4 camera can watch over a second doorway, a driveway, a backyard gate, or any other area you want to keep an eye on. Amazon is also selling the Blink Video Doorbell with Sync Module Core by itself for $23.99, down from $59.99, though spending an extra four dollars for an additional security camera feels like the more sensible purchase.

Both devices are completely wire-free and run on AA lithium batteries that Blink says can last up to two years, depending on usage. Video quality is sharp enough for everyday monitoring, whether you're checking who's at the front door or keeping an eye on a side entrance. Both devices also include night vision, motion alerts, and two-way audio, allowing you to see and speak with visitors directly from the Blink app. As for the included Sync Module Core, it acts as the hub that connects everything together and allows you to expand the system later with additional Blink devices—it can support up to 10 cameras and doorbells on a single setup.

The biggest drawback is storage. Unlike some of Blink's other sync modules, the Core model doesn't support local storage, so recorded clips require a Blink subscription after the included trial period ends. Features such as person detection and extended video history also sit behind that paywall, with plans starting at $40 per year for a single device or $120 annually for unlimited devices. Also, while the system works well with Amazon Alexa, Echo Show displays, and Fire TV devices, support for Google Home and Apple HomeKit is absent. Still, for less than $30, it's difficult to find another security bundle that covers two locations and leaves room to expand later.