The Ethernet compact Building Automation Switch (BAS) provides five 10/100 Mbps shielded RJ-45 ports. Each port supports the auto-negation protocol in order to select data rate, duplex, and flow control. Half- and full-duplex is supported, as well as flow control. All five ports are auto-MDI/X compliant, so any port can function as an uplink port to another switch, eliminating crossover cables in the field. Once power is removed and reapplied, the switch will return to operation without fail, the company says. The switch can be powered from an unregulated DC power source (10-36 V) or from an AC power source (8-24V, 47-63 Hz). A quick-disconnect power connector is provided.
Contemporary Control Systems Inc., 2431 Curtiss St., Downers Grove, IL 60515; 630-963-7070; 630-963-0109 (fax); firstname.lastname@example.org; www.ccontrols.com.