What is the life expectancy of your LED?

When installed according to our recommendations, we expect our LED to last up to 40,000 hours. Excessive voltage and the consequence of excessive heat is the culprit of premature failure. Be sure to confirm your voltage with a digital voltmeter upon installation. Voltage at both the first and last fixture should be at 11.5vAC.
What voltage is required to operate your LED?
What materials are used for Integral Lighting fixtures?