Precision Psychrometer Highest 2% RH Accuracy With less than 30 second RH response time Features: • Dual backlit display • Simultaneous display of: Humidity/Temperature Humidity/Dew Point Humidity/Wet Bulb • Slim design with rubberized sides for better grip and for one hand operation • Data Hold and Min/Max functions • Auto power off with disable and low battery indicator • Complete with carrying case and 9V battery Slim design with rubberized sides for better grip and one hand operation Specifications Humidity Temperature (Internal) Basic Accuracy Max. Resolution Dewpoint Wet Bulb Dimensions Weight 0 to 100%RH -22 to 199°F (-30 to 100°C) ±2%RH, ±1.8°F/1°C 0.1%RH, 0.1°F/°C -22 to 199°F (-30 to 100°C) 32 to 176 °F (0 to 80°C) 7.8x1.7x1.3" (200x45x33mm) 7oz (200g) Ordering Information: RH390 ..............Precision Psychometer RH390-NIST ....RH390 w/ Certificate of Calibration Traceable to NIST. www.extech.com Specifications subject to change without notice. 2/22/12 - R1 Copyright © 2008 - 2011 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.