The company’s systron® remote I/O terminal blocks, with digital expansion modules, are now offered with analog expansion modules. The plug-in expansion modules mount into a separate terminal block base module which is available with either screw clamp or spring clamp terminations. Compatible with Interbus and Profibus protocols, the modules allow up to four analog inputs and four analog outputs. The modules attach to each other using ribbon cables with plug-in connectors. Entrelec Inc., 1950 Hurd Dr., Irving, TX 75038-4312; 800-431-2308 or 972-550-9025; 800-862-5066 or 972-550-9215 (fax); (Web site).