Bright Full HD 1080p laser projector. Ultra short throw lens. Ultimate control. External power supply - More reliability, portability and energy efficiency. Eco-friendly compact ultra short throw laser projector. The ZH430UST is one of Optoma's most compact and hassle-free Full HD DuraCore laser projectors to date. Designed for maintenance-free continuous operation, this 4000-lumen projector delivers powerful and eye catching image performance, perfect for meeting rooms and classrooms, the ZH430UST is designed to be used at any time of day. Installation and setup are simple with four corner adjustment and the added benefit of an external power supply, offering more reliability, portability and energy efficiency. Geared for conference rooms, boardrooms, and other corporate spaces, the ZH430UST features an ultra short throw lens meaning it can project a 100” image from less than 0.5m away, avoiding shadows being cast across the screen from the presenter(s). For ultimate convenience it comes with an RS232 connection for monitoring and controlling and a built-in speaker. Designed for the future.