TruOpto 2mm 12V Tower LEDs Diffused Lens TTL Compatible – TruOpto OSB5SA7K94B -12V, A 12V blue 2mm tower LED from TruOpto that is a TTL compatible solid state lamp with an integral current limiting resistor, so there is no requirement for external current limiting components, simplifying design and saving cost. The high luminosity and long lifetime of this tower LED makes it suitable for many applications in electronic signage, signalling, small area illumination, and backlighting. TruOpto OSB5SA7K94B -12V 2mm 12V Tower LED Blue 150MCD Diffused