Auto Keystone Correction Instantly projects a square image even when the projector is set up at a steep offset angle to the screen. Variable Audio Out Adjusts the volume of an external speaker system using the projector's remote control. Wired Network Connection Integrated RJ45 connection for quick connection to the LAN (10/100 base-T capability). ECO Mode™ Extends lamp life, lowers audible noise & reduces total cost of ownership. Carbon Savings Meter Calculates the positive effects of operating the projector in ECO Mode, which is encouraged by an optional message at startup. A green ECO Mode button on the remote control makes the switch easy. Built-In Closed Captioning Enables decoding & display of text information from a video. Dual HDMI inputs (with HDCP) ensure quick switching between presentations & allows for simultaneous digital connections of high-definition sources, such as Blu-ray players, cable boxes, satellite receivers & computers 16W Audio provides the volume needed for large rooms High Contrast Ratio (4000:1) enables dynamic presentations while bringing extreme definition to all inputs Image Express Utility Lite with audio transfer provides wired & wireless data transmission via peer-to-peer or over the network