Taco, Inc. (booth 2510) has reissued a specification data sheet for its Zone Control Family line of products. The new brochure provides complete information on Taco's line of switching relays, zone valve controls, priority zoning circulators, fan controls and add-on controls. Taco zone control products come with external diagnostics to show full functionality and make troubleshooting quick and easy. They are fully compatible with conventional and programmable thermostats. Taco.