This panel has no ballasts to burn out like other plant lights. It does not run hot, just warm. You will not experience unsightly brown burned leaves when they accidentally touch the LEDs. This is common with most other lights that get very hot. This more controlled running temperature reduces the need to water so often and keeps rooms with plants from getting uncomfortably hot in the summer months requiring additional air conditioning. Extreme energy efficiency permits this new LED panel to pay for itself many times over each year in electricity savings. It saves 50% to 90% in energy consumption compared to incandescent bulbs or fluorescent tubes. Wide angle projection insures uniform leaf coverage. Scientifically calculated even blending of red and blue LEDs eliminates the time consuming task of repositioning separate colored lights back and forth trying to achieve uniform exposure. 14 to 16 hours per day is all that is necessary for maximum plant health with this wave blended lighting system. This allows distances 6-Inch and less between the LEDs and the plants accelerating photosynthesis. Red and blue wavelengths are for growing and flowering of plants. The typical white plant lights that are very hot is unnecessary and just consume excessive electricity. The purity of the LED generated light lengthens flowering periods. These LEDs turn on instantly and can be turned on by hand each day or work well with all standard lamp timers. Color: Red + Blue = Purple looking to the eyes Working Voltage: 12V or 110V-220V Power: 13.8 Watts Dimensions: 12 inches (30.5cm) square Thickness: Low profile 1.25-Inch Power cord length: 48 inches Recommended coverage: one panel per 18 inches square. this item is created and distributed by BestLED only.