How about the light efficiency of ordinary 40W fluorescent lamp? What is light decay? What is the color temperature? What are these parameters of LED 12W fluorescent lamp?

Not tested, it can only be said that the light efficiency of ordinary 40W is about 20LM/w; There are two color temperatures: 2900K and 6000 K;

LED 12W Each bulb and power supply are different, about 60- 100lm/w ... There are three common color temperatures, about 3000K for warm light, about 6500K for natural white, and about 6500K for positive white. The light attenuation is also related to the bulb and power supply, and the heat dissipation design is generally three thousandths to one thousandth within 3000 hours. Bad lamp beads and excessive current will lead to higher light attenuation.