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 (10μS) 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 Ordering Information: Specifications Fc Range Lux Range Accuracy Max Resolution Datalogging (HD450) PC interface Dimensions Weight 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 NIST Certificate HD450 ............Heavy Duty Datalogging Light Meter HD450-NIST ..Heavy Duty Datlogging Light Meter with NIST Certificate TR100 ............Tripod for meters with tripod mount feature www.extech.com Specifications subject to change without notice. 6/29/09 - R1 Copyright © 2008 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.