General Tools DLM112SD Data Logging Light Meter with Excel Format SD Card<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Measures light intensity within 3 automatically switched full-scale ranges - 2，000 lux， 20，000 lux， 100，000 lux (200 ft.-cd， 2，000 ft.-cd， 10，000 ft.-cd)</li><li>Selectable lux or foot-candle units</li><li>Performs real-time automatic data logging at sampling time settable from 1 sec to 1 hr.; supports manual logging and changing of card storage location</li><li>Big (2.5 inch diagonal) front-panel green backlit LCD is easy to read; displays maximum and minimum readings</li><li>Auto power off function that can be disabled for data logging</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41E-i8F7ReL.jpg" noproxy>