Monitor your home with the 1080p Wi-Fi Camera with Night Vision 4-pack from YI Technology. These cameras each have a 1/2.7" CMOS sensor to capture 1920 x 1080 resolution video at 15 fps. The 8 IR LEDs on each camera provide up to 29.5' of night vision. Each camera's wide-angle lens delivers a 112° diagonal field of view. Two-way audio communication is possible thanks to built-in speakers and microphones. Baby crying detection technology alerts you when your baby makes a sound and sends you 6-second video clips. Sound can be picked up within approximately 16'. In addition, motion detection is also supported. An onboard memory card slot supports microSD cards up to 32GB. microSD cards are available separately.