Psychrometer with Infrared Thermometer 3-in-1 combination meter Combines the functions of a Humidity Meter, Type K Thermometer, and InfraRed Thermometer for non-contact surface Temperature measurement Features: * Built-in InfraRed Thermometer for non-contact temperature measurement to 932F (500C) with 30:1 distance to target ratio * Type K Temperature function for contact temperature measurement to 2501F (1372C) * Highest 2% RH accuracy * Heavy Duty rugged double molded housing with large triple LCD backlit display * Auto power off * USB port includes PC software * Includes Windows(R) compatible software with USB cable, Type K bead wire temperature probe, built-in stand, hard carrying case, and 9V battery Patented USB port includes PC Software Patented non-contact InfraRed Thermometer technology built into a Hygro-Thermometer is perfect for Home inspection applications. Specifications InfraRed Thermometer Distance to Target Ratio Type K Temperature Air Temperature RH Range Dew Point Wet Bulb Dimensions Weight Range -58 to 932F (-50 to 500C) 30:1 -148 to 2501F (-100 to 1372C) 14 to 140F (-10 to 60C) 0 to 100%RH -90.4 to 140F (-68 to 60C) -6.88 to 140F (-21.6 to 60C) 10 x 2.9 x 2" (255 x 75 x 50mm) 12.3oz (350g) Basic Accuracy 2% or 4F/2C (1% + 1C) (2% 4F/2C) 2%RH Ordering Information: HD500 ............Psychrometer with IR Temperature www.extech.com Specifications subject to change without notice. 09/19/11 - R1 Copyright (c) 2007-2011 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.