The Trend IQ3xcite building energy management system controller uses BACnet IP, TCP/IP, Ethernet networking technologies as well as Trend’s proprietary communications. Its secure, embedded Web server delivers user-specific Web pages to a PC or mobile device running familiar, easy-to-use Internet browser software. The IQ3xcite’s graphics are easy to understand and navigate. This controller is virtually plug-and-play; its modular design accommodates any expansion or configuration a user needs. The DIN-rail-mounted IQ3xcite’s basic version offers ten inputs and six outputs; an expandable version can have up to 128 points by adding I/O modules. A user can network more than 16,000 IQ3xcite controllers.