Smart lighting in a contemporary Australian living room

Smart dimmer switches

Wall dimmers that set brightness by app, voice or the switch itself, and hold a scene once you have it right. The catch is compatibility, so check the dimming type and your lights before you buy.

Trailing vs leading edge

Leading edge suits older halogen and incandescent loads; trailing edge is the smoother, quieter choice for modern LEDs. Most smart dimmers here are trailing edge, and many auto-detect the load.

Minimum and maximum load

Every dimmer lists a wattage range. Drop below the minimum, common with one or two LED globes, and lights can flicker or refuse to turn off fully.

Control and protocols

Dim over Wi-Fi, Zigbee or Matter, by app, voice or the physical paddle. Matter and Zigbee run locally through a hub; Wi-Fi models connect direct.

Wiring

A dimmer replaces the existing mech in the wall plate. Wiring, including whether a neutral is needed, sits with our light switches.

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Shelly Dimmer Gen4
Shelly

Dimmer Gen4

  • Trailing edge
  • 150 W
  • Bluetooth Wi-Fi Zigbee Matter
$59.95
Buying guide · Smart dimmers

What is a smart dimmer switch?

Brightness you can set from an app, not just at the wall.

A smart dimmer switch lets you set the brightness of a light from an app, with your voice or on a schedule, as well as by hand at the wall. You can save a brightness you like as a scene, then bring it back with a tap or have it come on by itself at certain times of the day.

We stock two kinds of dimmer. A dimmer switch changes the power going to a light, so it works with the dimmable downlights and globes you already have. It sits behind your existing light switch or on the DIN rail in your switchboard, and the switch on the wall still works by hand. A wireless dimmer changes the brightness of a smart light you already have, like Hue or WiZ. It's a battery remote, so there's nothing to wire in. You can't use a dimmer switch with a smart light, though. A smart light needs full power all the time, and cutting it makes the light flicker or drop off the app.

If your lights are ordinary dimmable LEDs, you want an LED dimmer switch. Before you buy, check three things: dimmable globes, enough load on the circuit and a neutral wire. We cover all three further down.

A hand holding a white light switch plate away from the wall, with a smart module wired into the box behind it
Your existing downlights A dimmer module goes behind the light switch you already have, so you can dim your LED downlights without changing the wiring or the switch plate.
A row of Shelly Pro modules clipped onto a DIN rail inside a switchboard
A new build or a rewire If you're building or rewiring, a Pro dimmer in the switchboard keeps all your dimmed circuits in one place. It can also connect to your network with a cable.
A family eating dinner under a row of smart filament globes hanging above the table
A room already on smart bulbs Already have Hue or WiZ bulbs? Keep the power on and put a wireless dimmer on the wall. There's no wiring and no electrician needed.

Behind the switch, in the switchboard or on the wall?

There are three ways to dim a light. A dimmer module goes behind your light switch, a Pro dimmer goes in the switchboard, and a wireless remote sits on the wall and dims smart bulbs without touching the wiring.

In-wall Behind your switch · Shelly Dimmer

Goes in the wall behind the light switch you already have and dims up to 150 W of LED on one circuit. It works with or without a neutral wire. The Gen4 can run on Matter or Zigbee, one at a time, while the Gen3 uses Wi-Fi and Bluetooth only. If you're adding dimming to an existing home, start here.

Protocols
Wi-Fi Bluetooth Zigbee Matter
DIN rail Switchboard · Shelly Pro Dimmer

Clips onto the rail in your switchboard and needs a neutral wire. The 1PM dims one circuit at up to 200 W, and the 2PM dims two circuits at up to 200 W each. Both show how much power each circuit uses. Best for a new build or a rewire, when your electrician is already working in the switchboard.

Protocols
Wi-Fi Bluetooth Ethernet
Remote The easy choice · Hue and WiZ

Runs on a battery, so there's no wiring and no electrician. The Hue Dimmer Switch and Tap Dial use a coin cell and control Hue lights. The WiZ Tap Dial charges over USB-C and controls WiZ lights only. Each works with its own brand of smart bulb, not with ordinary globes.

Protocols
Zigbee Bluetooth Wi-Fi

Choosing a dimmer switch for LED lights

Before you buy a dimmer, there are three things you should check. You can skip them if you're using a Hue or WiZ wireless remote with smart bulbs you already have.

Dimmable globes Check the globe

A non-dimmable LED will buzz or flicker on any dimmer, so check the box or the globe itself. Every mains dimmer we stock is a trailing edge dimmer, the type LED needs, so that part is covered.

Enough load Under 20 W needs a Bypass

LEDs draw very little power, and two or three downlights can fall under what a dimmer needs to work properly. On an in-wall Shelly without a neutral, lights under 20 W need a Bypass. It's fitted at the light, not at the switch, so have it on hand when your electrician comes.

A neutral wire In-wall or switchboard

The in-wall modules work with or without a neutral, which suits older Australian homes. The Pro dimmers in the switchboard need one.

Frequently asked questions

We wire this gear ourselves. Can't find yours? Ask our Melbourne team

It depends on the model. A Wi-Fi dimmer joins your home network directly and needs no hub, which is the simplest start for one or two circuits. A Zigbee dimmer needs a hub or coordinator, but it runs on a local mesh that gets more reliable as you add devices, so it suits a whole-home fit-out and anyone running Home Assistant. Some models carry both radios and let you choose at setup.

Usually, if the globes are marked dimmable and the dimmer is trailing edge. Non-dimmable LEDs will buzz or flicker, and even dimmable ones vary in how low they go. Check the globe is dimmable first, then match it to a trailing-edge dimmer.

The switch on the wall always works by hand, so the lights dim whether or not the internet is up. Matter and Zigbee dimmers also keep app and automation control locally through a hub. Wi-Fi only models lose app and voice control while the connection is down.

Yes. You can save a brightness level as a scene and recall it by app, voice or a tap, and many dimmers fade up to it rather than snapping on. Some also remember the last level you used, so a single press returns to it.

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