Use a digital dimmer, NOT TRIAC
Dim an LED with a TRIAC dimmer and both the dimming range and user experience is restricted (it’s bad news for the LED’s life span, too). A TRIAC dimmer switches at the peak of the cycle where there are maximum volts. When the TRIAC switches off, the energy has to flow somewhere, and where does it go? Through to the copper coil, which tries to absorb it, and across the cable network, which bleeds it in to the LED power supply. The result: flicker & buzz.
However, as this spike radiates out across the cabling on the circuit, it can also disturb WiFi, DAB radio, and any other radio signal in the building.
While some manufacturers attempted to address LED dimming issues through creating variants of the TRIAC model, none worked completely: it simply wasn’t compatible. Zano Controls’ developers acknowledged that the coil needed to be removed in order to dim LED successfully, and turned to digital solutions for the answer. That’s how Zano's technology was born - through replacing the coil with a digital microprocessor that can control LED without interference.