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Continue to ChatLight sensors shrink LED emitter-to-sensor gap to 1mm https://www.ednasia.com/light-sensors-shrink-led-emitter-to-sensor-gap-to-1mm/
Light sensors shrink LED emitter-to-sensor gap to 1mm https://www.ednasia.com/light-sensors-shrink-led-emitter-to-sensor-gap-to-1mm/