The Electronic Magnitude Transformer allows you to hardwire and dim your LEDs from a wall dimmer. Requires a compatible low voltage wall dimmer to work. – We suggest using the Lutron DVCL Dimmer also see the compatible dimmer list in the Information Sheet tab below. Also requires a cable to run from the dimmable transformer to the first light(s) – Can use Inspired LED interconnect cables or in wall cables to wire nut into the transformer. (This cable is not included) More information can be found on our blog post – New Product: E-Series Dimmable Low-Voltage Transformers Visit Our Website : https://www.inspiredled.com/product/12vdc-magnitude-e-series-dimmable-transformer-12vdc/