Phoenix Controls Corporationannounced that the Celeris® Accel-Way™ is the first pure gateway device to receive listing from the BACnet Testing Laboratory (BTL). The gateway handles communication between the Celeris Environmental Control System and a facility's building management system (BMS). It acts as a server for the BMS network and allows multiple BACnet clients to read values and write set points to devices on the Celeris system.