Thompson Ridge, N.Y.— Model IN-HWD is a microprocessor-based humidity converter intended for use in difficult humidity locations. The device uses its proprietary electronics to calculate humidity and output an accurate 4-20 mA dc signal for humidity and one for temperature. The humidity output is accurate to 1.0 % and 0.1% for temperature. Model IN-HWD device is designed to operate in harsh environments where high temperatures or chemical atmospheres that damage standard sensing elements exist. www.vespo.com Vespo Marketing Assoc. Inc.