TruOpto 5mm LED Low Voltage Round Module 1.2V Water Clear – TruOpto OSB5SA5111A-1V, This blue 5mm LED module has an input voltage range of 0.8 to 1.6V DC making it ideal for use with 1.5V batteries. The LED also features high luminosity and is ideal for applications such as flashlights/torches, decorative lighting, etc. TruOpto OSB5SA5111A-1V 5mm Low Voltage LED 1.2V Blue 8400MCD 15° Water Clear