Lorex LW2902 Live SD9 Wireless Digital Security System The Lorex LW2902 self contained digital wireless surveillance monitor and recording solution features a 9" LCD monitor with builtin SD video recorder. Place it on a desk, table, or mount it on a wall or even under a counter with the included brackets. The digital wireless cameras feature a durable metal weather resistant construction which is perfect for indoor or outdoor use. The builtin PIR motion sensor tracks moving objects for more accurate motion detection. Other innovative features include intercom feature for 2way communication between the LCD monitor and the camera, and a digital picture frame simulation. Expands up to 4 cameras using LW2701AC1.