Use with confidence 120v input voltage, no transformer required, so you don't have to worry about too many products connected to the same line causing the tail light not to light up, or accidentally exceeding the maximum power of the transformer and leading to transformer damage. 5-100% dimmable This light is 5%-100% dimmable and compatible with most LED dimmers on the market, making it the perfect choice for lighting up a conference room Note It is recommended to adjust the color temperature before installation; the junction box is not included.