Model 6504 Zoned Comfort Control panel is designed to serve as an information-sharing hub for all of the company's air quality products to make installation and setup easier for contractors and their use simpler for homeowners, says the manufacturer. Working in conjunction with thermostat Model 8570 and other accessories, the panel allows control of one or more thermostats from any other thermostat on the system. Also, it can communicate outdoor temperature and indoor relative humidity. It can execute self-diagnostic checks to ensure the zone panel and accessories are working properly, the company says.

Aprilaire, P.O. Box 1467, Madison, WI 53701-1467; 800-334-6011;

eProduct #195