The PJ WX3231N digital business projector features innovative controls and connectivity options that set the standard for high-performance presentations. The PJ WX3231N digital business projector delivers bright, engaging images in any light with innovative image technology from a proven optics and lens leader. The PJ WX3231N digital business projector is designed specifically for fast, easy transport and setup for busy professionals. General Features: Control security and limit user access with the password-setting feature and prevent mistakes while operating the PJ Series projection systems with the Key Lock function. Use the convenient Blackboard Mode to make subtle projection enhancements specifically designed to improve clarity when projecting on colored surfaces such as a blackboard or a green, black, brown, blue or beige wall. Deliver effective presentations with the Mute and Freeze buttons on the remote control. Temporarily mute the sound or freeze the action to drive home your presentation or to create an environment for interactive audience participation.