Do you need a power down transformer when hardwiring to a wall light switch?

Hello Valued Customer, thank you for your question. No, a power down transformer is not needed. The UCF is designed to be wired directly to typical residential power of 120V 60Hz. If you have any further questions, please feel free to give us a call between the hours of 7:00 AM – 8:00 PM Central Standard Time, Monday through Friday at 1-800-654-8483. Thank you.