... Humidity <85% Storage Temperature -20~ +100Weather proof GradeIP40 Comparison chart: Cost Comparison between LEDs, CFLs and Incandescent light bulbs LED bulbCFLIncandescentlifespanover ... 50k hours bulb expense$7.50$12.50$35.70Total cost for 50k hours$37.50$92.50$335.70 Energy ... over 50,000 hours, assuming 30 bulbs per household Total cost for 30 bulbs$1,125.00$2,775.00$10 ...