Dimmers
Dimmers adjust light levels to set ambiance, save energy, and extend lamp life. Choosing the right dimmer means matching it to your load type (LED, ELV, MLV, or incandescent), your wiring (single-pole or multi-location), and verifying compatibility with your LED fixtures. Rock Lighting & Electric stocks 1,400+ dimmers from Lutron, Leviton,...
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Frequently Asked Questions
How do I choose a dimmer for LED lights?
Match the dimmer to the LED load and confirm compatibility. Most LED fixtures use forward-phase (TRIAC) or reverse-phase (ELV) dimming; check the fixture's spec sheet and the dimmer's LED compatibility list, and confirm the connected LED wattage stays within the dimmer's rated LED load.
Why do my LED lights flicker or buzz with a dimmer?
Flicker and buzz usually come from a mismatch between the dimmer and the LED driver, or from exceeding the dimmer's LED load rating. Using a dimmer rated for LED/CFL loads, confirming it is on the manufacturer's compatibility list, and setting the low-end trim typically resolves it.
What is the difference between a single-pole and a 3-way dimmer?
A single-pole dimmer controls a light from one location. A 3-way (multi-location) setup controls the same light from two or more locations, using a 3-way dimmer with companion dimmers or switches. Choose based on how many switch points control the circuit.
What is the difference between ELV, MLV, and TRIAC dimming?
TRIAC (forward-phase) dimming is common for incandescent and many LED loads. ELV (electronic low-voltage, reverse-phase) suits electronic transformers and many modern LED drivers. MLV (magnetic low-voltage) is for magnetic transformers. Use the dimming type the fixture or transformer specifies.