Stansen 900W led Grow Light, Full Spectrum Indoor Grow Lights for Medicinal Plants Veg&Flower in Greenhouse Tent Plant(Using 90 Degree Double Lenses (300ws) Welcome to buy stansen LED plant growth lamp, high efficiency full spectrum 380-730nm, suitable for indoor plants and flowers in various growth stages. This is a high lumen, high output, low calorie. For indoor use only, do not use the lamp in dripping or wet places. Water and electricity may be dangerous mixtures. Working environment is -20 ~ 40 C, 45% RH ~ 90% RH.To protect the lights, turn off the power when lightning strikes. Do not touch or move lights while working. The flowering and vegetation buttons have different functions. Vegetation switch: mainly blue LED. For sowing or seedling growth, you can only use the vegetation switch. Flowering switch: mainly red LED. For flowering/flowering, you can use flowering and vegetation switches. We are a high-tech enterprise specializing in R&D and sales of LED lamp bead packaging and LED lamp production. We have a strong technical team and cost advantage, two-year warranty and 30-day money back guarantee.