We're sorry to hear about your experience with our Diva dimmer not dimming your LEDs very far. The DVELV-303P is rated only for Electronic Low Voltage loads, so performance issues such as the poor dimming and buzzing can occur when using LEDs. Your fixture may require an electronic low voltage (ELV) dimmer which this would then be the correct dimmer. The dimming range for LEDs varies from bulb to bulb depending on the bulb's design. We suggest making sure your dimmable LED has been tested and approved by Lutron. We have a mobile-friendly web tool to help you select bulbs that perform well with Lutron dimmers. To use the tool please visit lutron.com/ledfinder. If we have not tested your fixture, then we would suggest contacting the manufacturer to see if they have a recommended dimmer for increased performance.
If you have questions or concerns, please reach out to our Customer Satisfaction team at customersatisfaction@lutron.com, or call us 1-844-LUTRON1. We're here 24/7, so please call us any time!
Mike S. @ Lutron Support