Introduction: the led grow light strips total 5 meters, IP65 waterproof (Plant Grow Light Can’t be placed underwater) with a power adapter and dimmer switch, The led grow light strips LEDs can be cut between 3 leds. Applications: Plant Growth Lamp is ideal for plant tissue culture, vegetable growing, horticulture and industrial planting, indoor plants, garden flowers, aquarium hydroponics, optimal for all stages of plant growth. How specific wavelength works: LED grow lights Red: Blue = 4: 1, blue (wavelength: 450nm~470nm) is very useful for seed germination, plant germination, stronger stems and roots. red (wavelength: 630nm~660nm) will help your plants grow big and bloom, Red LED is the key to plant blooming. Dimmable: Led grow light easy to install and use, connect the dimmer to led strip and power adapter directly, knob control, just twist the knob to adjust the brightness of led lights grayscale, no flickering, no overcurrent.