Fast sampling speed - Digital display sampling rate: 2-3 times per second - Benefit: captures rapid changes in light levels for timely, accurate readings in dynamic conditions LCD display and visibility - 40 segment analog strip backlight LCD display - Benefit: easy to read measurements at a glance, with backlighting improving readability in dim or bright environments Hold function for data retention - Operation: press the HOLD key to enable data retention, then press again to exit this function - Result: the photometer resumes normal operation after a held reading is captured - Benefit: preserves a measurement for documentation and traceability, reducing misreads and simplifying data logging Use scenarios - Laboratory measurement - Monitor rapidly changing light intensity during experiments to ensure measurements reflect real-time conditions - Field observations - Conduct on-site light measurements in variable lighting with the backlit display for clear readings in challenging environments - Quality control and documentation - Freeze and record a reading for incident reporting, compliance checks, or production records without interrupting workflow Key attributes at a glance - Function: fast sampling with a clear backlit display and a data retention (HOLD) feature - Performance: reliable 2-3 readings per second for dynamic measurement needs - Usability: straightforward HOLD operation to capture and resume normal use - Practicality: suitable for laboratory, field, and production environments where accurate, easily recorded light measurements are required