Heavy Duty Light Meters Datalogging Model Available Automatically stores up to 16,000 readings or manually store/recall up to 99 readings. Features: • HD450 Datalogger model automatically stores up to 16,000 readings or manually store/recall up to 99 readings • Wide range to 40,000Fc or 400,000 Lux • Cosine and color corrected measurements • Utilizes precision silicon photo diode and spectral response filter • Peak mode (10mS) captures highest reading • Relative mode indicates change in light levels • Min/Max and Data Hold • Large backlit LCD display with 40-segment bar graph • Heavy Duty rugged double molded housing • Built-in USB port • Includes light sensor with 3ft (1m) cable and protective cover, Windows® compatible software with USB cable, hard carrying case, and 9V battery Model HD400 Model HD450 Datalogger Specifications Fc Range Lux Range Accuracy Max Resolution Datalogging (HD450) PC interface Dimensions Weight Ordering Information: 40, 400, 4000, 40.00kFc 400, 4000, 40k, 400kLux ±5% rdg 0.01Fc/0.1Lux 16,000 continuous readings; 99 selected readings USB 6.7 x 3.1 x 1.6” (170 x 80 x 40mm) 13.7oz (390g) HD400 ............Heavy Duty Light Meter HD400-NIST ..Heavy Duty Light Meter with Calibration Traceable to NIST HD450 ............Heavy Duty Datalogging Light Meter HD450-NIST ..Heavy Duty Datlogging Light Meter with Calibration Traceable to NIST TR100 ............Tripod for meters with tripod mount feature www.extech.com Specifications subject to change without notice. 4/27/12 - R1 Copyright © 2008-2011 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.