I do not have blink system so i can not verify that they connect. I do know they have never been used. Unit sold as is.

The Blink Outdoor 4 XR Four Camera System with Sync Module XR is a high-quality surveillance camera system that includes four cameras with a maximum resolution of 1080p (FHD). These cameras are designed for outdoor use, making them weatherproof and equipped with Wi-Fi connectivity for easy monitoring. They are compatible with Amazon Fire TV, Amazon Alexa, and the Ring App for smart home integration. With a response time of 1ms and an operating range of up to 9 meters, this system provides reliable security monitoring for your outdoor spaces. Additionally, the cameras are powered by both battery and wall plug-in options for convenience.

Blink Outdoor 4 XR Four Camera System w/Sync Module XR NEW FREE/FAST SHIP. Condition is New. Shipped with USPS Ground Advantage.

Blink Outdoor 4 XR Four Camera System w/Sync Module XR BRAND NEW Factory Sealed. Condition is New. Local pickup only.

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. 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).

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. 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).

Blink Sync Module XR. See and speak from the Blink app. Experience 1080p HD live view, infrared night vision, and crisp two-way audio. Set up Outdoor 4 in minutes and get up to two years of power with the included AA lithium batteries (with regular use).

Blink Sync Module XR. See and speak from the Blink app. Experience 1080p HD live view, infrared night vision, and crisp two-way audio. Set up Outdoor 4 in minutes and get up to two years of power with the included AA lithium batteries (with regular use).