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摘要

The Simple Logger~® II Model L404 is a compact, four-channel event datalogger that works with dry contactrnclosure or 0 to 3- and 0 to 5-VDC logic levels. Event measurement scaling is programmable, and an internal memory storesrn50,000 events. Programmable storage ranges from eight ev-ery second to one every day.rnThe EN 61010-1, 50-V CAT III L404 is battery-operated and features an isolated USB communications cable. A series of front-panel LEDs provides a status of the logger's state and memory usage.