Power Saving, Eco Friendly World-Leading Smart Eco Technology for a Greener Environment As the first DLP brand to incorporate Philips' Image Care technology into its projector lamp system, Ben Q has taken a further leap, developing its own Smart Eco Technology to perfect what DLP can do for energy saving in the 21st century classroom. Built with this brand new invention, the MX661 brings together uncompromised brightness, exquisite picture quality & optimized lamp life through innovative features Eco Blank Mode The Eco Blank mode allows teachers to blank the projection screen whenever they need to direct their students' focus back on them – or simply when the projector is not in use. When activated, this special feature dims the lamp power automatically, lowering the total power consumption by 70%. Smart Eco Mode The Smart Eco Mode, which cleverly adjusts the lamp power to maximize power saving by delivering the best contrast & brightness performance using only as much light as needed. No Source Detected Mode The automatic switch to Eco Blank Mode after the projector is turned on for over three minutes without a display source, eliminating unnecessary energy waste & prolonging the life of the projector lamp. Audio Pass Through With the built-in speaker, the MX661 can be used as an audio system when it's on the standby mode. This saves you the trouble as well as the extra budget for getting a separate audio system. 0.5W in Standby Mode When inactive, the MX661 keeps power consumption to a minimum with 0.5W standby power, achieving what was once a challenge for ealier projector models. This technological advancement in energy saving certainly helps extend the projector lamp life & lower energy costs. Hassle-Free Projector Maintenance Upper lamp door for easy lamp access The upper lamp door is designed for it managers to replace the projector lamp safely & quickly. should the projector lamp go out in the middle of the class, it can be replaced without delaying the class. Thoughtful Designs Auto Power Off Automatic power off after the projector is turned on for over thirty minutes without a display source, eliminating unnecessary energy waste & prolonging the life of the projector lamp.