YouOKLight Led Grow light Bulb Miracle Grow Plant Light for Hydropoics Greenhouse Organic (E26 15w 2 Bands) LED Spot Plant Grow Light plus UV Chain / UV Health Meter This plant growing light can rapidly improve the health of plant and growing, generally more leaves popping up within 2 weeks of using this growing lamp on a daily basis, YouOKLight plant growing lighting is designed to fit standard E27 socket, brilliant all metal housing, Easy to set up and use - no special lamp needed, a desk lamp will do Possible Operating Temperature (Conditions): -4F - 122F (-20C - 50C) hydroponic led grow light have 12 LEDs (3 blue & 9 red), ultra bright. Really helps when the plant need extra boost of light, or a few of sun, raining, snowing , dark indoor etc. This led grow bulb has low power consumptionhigh luminous efficiency and long service life, the electronics inside are stepping down the voltage. the outside is constructed in a pure heat-sink fashion, It does not generate any noticeable heat even 17hrs a day. keeping your temperatures down perfectly.