This company offers the USDT 2001, a universal differential controller. It regulates, monitors and displays temperatures,

This company offers the USDT 2001, a universal differential controller. A microprocessor-based temperature controller, it regulates, monitors and displays supply and return temperatures in heating systems. A green LED comes on when the supply temperature exceeds the return temperature by a programmable temperature difference.

Thermo Technologies, 5560 Sterrett Place, Suite 115, Columbia, MD 21044; (410) 997-0778; fax (410) 997-0779.

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