The ZW350ST is one of Optoma's most compact and hassle-free WXGA DuraCore laser projectors to date. Designed for maintenance-free continuous operation, this 3600 lumen projector delivers powerful image performance with flexible installation features and extensive connectivity options in a sleek, compact form factor, up to 34% smaller than previous Optoma models. An added benefit, the ZW350ST features an external power supply offering more reliability, portability and energy efficiency. Designed with the environment in mind, the eco-friendly packaging contains up to 97% recyclable materials. Geared for conference rooms, boardrooms, and other corporate spaces, the ZW350ST has a short throw lens meaning it can be positioned less than half a metre from any wall. For ultimate convenience it comes with an RS232 connection for monitoring and controlling and a built-in speaker.