Definition: NLD stands for "Neon Lamps." It's a common term in electronic engineering to refer to the first generation fluorescent lamps, which were introduced around 1980. The specific type of lamp used was a compact fluorescent (CFL) lamp. CFLs are smaller and lighter than their predecessors, typically using less power but producing more energy for each watt output. They're often preferred over incandescent bulbs, as they consume less electricity per unit time and can be easily replaced at home or during routine repairs. Definition of NLD_065_1.5: This lamp has a nominal bulb life (in hours) of 1.5 times the rated life (in hours), so it's suitable for high-temperature applications, such as in HVAC systems where efficiency is critical and light usage is high.