Updated to clearly include the Sync Module 2:\nBlink Indoor Wireless HD Security Camera \u2013 2-Camera System with Sync Module 2 \nKeep an eye on your home with the Blink Indoor Wireless Security Camera System with Sync Module 2. Designed for simple, wire-free home monitoring, Blink Indoor combines HD video, motion detection, two-way audio and long-lasting battery performance in a compact indoor security camera. \nThis 2-camera system includes the Blink Sync Module 2, providing the central connection between your Blink cameras and your home Wi-Fi network. Key Features \nWireless Indoor Security\nThe wire-free design gives you flexibility when positioning the cameras around your home without needing power cables connected to each camera. \nHD Video\nView clear HD video through the Blink app, allowing you to monitor your home from your compatible smartphone or device. \nUp to Two-Year Battery Life\nBlink Indoor cameras are designed to provide long-lasting operation using AA lithium ba.