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Super Red 3 Digit 7 Segment LED Display Common Anode Numeric Indicator. 9.2mm compact digit height, small footprint to save PCB space, ideal for miniature digital numeric indicators. Common anode circuit design, compatible with TM1637, HT16K33 and mainstream MCU drive chips, simple circuit development. Constant current stable light output, flicker-free long-term operation, service life up to 100,000 hours.