KD1-40NABD and KD1-40NCBD are single-digit orange blue 7-segment LED displays with a character height of 0.4 inch (10.16 mm). KD1-40NABD adopts a common anode configuration, while KD1-40NCBD uses a common cathode configuration.

Designed for readability at distances up to approximately 7 meters, these display deliver excellent reliability under bright ambient lighting. 

The standard version features blue segments on a black surface. An optional version with blue segments on a gray surface is also available upon request.