The Orlight Dimmable Driver MAXDR650-1100MA is a ceiling-mounted driver designed for LED lighting technology. This AC driver allows for dimming capabilities, providing a versatile and efficient lighting solution for any home or space. Its reliable performance and dimmable feature make it a convenient and practical choice for those looking to enhance their lighting controls. input 230V output 650 to 1100mA çonstant current.dimmable with DALI and 0-10V. price is for one. if you require more than one message me and i'll do a separate listing.