T-DT hardwired dimmable power supplies have auto reset protection in case of overload, open circuit, short circuit, or over-temperature. They are compatible with Forward phase or Magnetic Low Voltage dimmers. Dim on high voltage side only. Not compatible with TandemLED Tunable White Lighting.UL Recognized to keep inspectors satisfiedConforms to Class 2 NEC RequirementsCompatible with high-voltage dimming devicesCompatible with sensors and switches39" optional plug-in cable included