Looking for an LED dimmer switch that is already set up on a switch board? This GreenLED LED dimmer switch is our preset version: a normal ON/OFF switch and a trailing-edge LED dimmer are fitted to the same switch board, ready for a licensed electrician to connect to a compatible dimmable lighting circuit.
The standard switch controls ON/OFF, while the dimmer controls brightness. The trailing-edge dimmer is rated for a 5W–150W lighting load and is designed for compatible dimmable LED lights.
Quick Guide: Is This the Right LED Dimmer Switch?
| Product type | Preset switch-board configuration with normal switch + trailing-edge dimmer |
| ON/OFF control | Standard switch |
| Brightness control | Trailing-edge dimmer |
| Designed for | Compatible dimmable LED lighting |
| Dimmer load range | 5W minimum to 150W maximum |
| Voltage | 220–240V, 50/60Hz |
| Use | Indoor only; not IP rated |
| Installation | Licensed electrician required |
How the GreenLED Preset Dimmer Switch Works
The common GreenLED setup uses two separate controls on the same board: one standard switch and one dimmer. Your electrician connects them so the switch provides normal ON/OFF control and the dimmer adjusts the brightness of the compatible dimmable LED lights.
This shows the functional control arrangement only, not a wiring diagram. The electrical connection must be completed by a licensed electrician according to the circuit and product documentation.
Why Use a Separate Switch with the Dimmer?
GreenLED's preferred arrangement lets each control do one main job:
- Normal switch: controls the lights ON and OFF.
- Trailing-edge dimmer: adjusts the light level after the circuit is switched on.
This provides a clear OFF position and means the dimmer does not need to be relied on as the everyday ON/OFF control. GreenLED uses this arrangement to help protect the dimmer in normal use while keeping brightness control simple.
Preset $34 Dimmer Switch vs Standalone Dimmer
| Option | Best when |
|---|---|
| This preset LED dimmer switch | You want GreenLED's common switch + dimmer arrangement already fitted to a switch board for your electrician to install. |
| Standalone trailing-edge LED dimmer | You are building a custom switch-board configuration or replacing one compatible switch mechanism with a dimmer. |
Can You Put a Dimmer on a 3-Gang Switch Board?
Yes, the GreenLED switch system is modular. A project can use configurations such as:
For example, a 3-gang board can use two normal switches plus one dimmer where the lighting layout requires it. The electrician should determine the appropriate switch-board and circuit configuration. If you need to build a custom combination, use the standalone trailing-edge LED dimmer with a compatible GreenLED switch board.
Browse our light switches, dimmers and power points for related switch-board options.
Trailing Edge vs Leading Edge Dimmer Switches
Older dimming systems were often designed around incandescent and halogen loads. Modern dimmable LED drivers have different electrical characteristics, so an LED-compatible trailing-edge dimmer is commonly the more appropriate choice.
| Feature | Leading edge | Trailing edge |
|---|---|---|
| Common use | Traditional incandescent / halogen systems | Compatible modern dimmable LED drivers and lamps |
| Waveform control | Cuts the beginning of each AC waveform | Cuts the end of each AC waveform |
| LED compatibility | Can be unsuitable for some LED drivers | Often preferred for compatible dimmable LED loads |
No dimmer is universally compatible with every LED driver. The light itself must be dimmable, and the total load and driver compatibility still need to be checked.
How to Check LED Dimmer Compatibility
- Confirm the lights are dimmable. A non-dimmable LED should remain on a standard ON/OFF switch.
- Add the rated wattage of the lights. The nominal load must stay within this dimmer's 5W–150W range.
- Check the LED driver or lamp manufacturer's dimming guidance. Wattage alone does not guarantee compatibility.
- Confirm the installation is indoors. This dimmer is not IP rated.
- Have the electrician test the complete circuit. The number and type of LED drivers can affect the useful dimming range.
As a simple wattage example, six 10W dimmable downlights represent a nominal 60W load, which is inside the stated 5W–150W range. The final number of fittings and compatibility should still be confirmed by the electrician.
Use with GreenLED Dimmable Downlights
For a matching lighting option, see our 10W dimmable LED downlights. They are specifically listed as dimmable and are a more appropriate companion for an LED dimmer than a standard non-dimmable bulb.
Why Can LED Lights Flicker or Buzz on a Dimmer?
Flickering, buzzing, a narrow dimming range or lights that do not turn on cleanly can indicate a mismatch somewhere in the lighting system. Common checks include:
- whether the LED is actually labelled dimmable;
- whether the total load is below the dimmer's minimum or above its maximum;
- whether the LED driver is compatible with trailing-edge dimming;
- whether the complete circuit has been correctly installed.
This dimmer is designed for compatible dimmable LED loads, but compatibility should be checked rather than assuming any LED and any dimmer will work together.
LED Dimmer Switch Specifications
| Specification | Details |
|---|---|
| Model / SKU | 3014385252082 |
| Configuration | Preset switch board with standard switch + trailing-edge dimmer |
| Dimmer type | Trailing edge |
| Voltage | 220–240V, 50/60Hz |
| Minimum power | 5W |
| Maximum power | 150W |
| Use | Indoor only; not IP rated |
| Standard listed | AS/NZS 60669.2.1:2013 |
| Certificates listed | SAA & RCM |
| Warranty | 3 years when installed by a licensed electrician |
Installation, Certification and SDoC
This is a mains-voltage electrical control product. The switch-board installation, circuit connection, load assessment and LED compatibility check should be completed by a licensed electrician. Licensed installation is also part of the stated 3-year warranty condition.
The current GreenLED documentation lists AS/NZS 60669.2.1:2013 and SAA & RCM certification. Download the SDoC for the GreenLED trailing-edge dimmer.
Frequently Asked Questions About LED Dimmer Switches
What is included with this $34 LED dimmer switch?
This is GreenLED's preset switch-board version with a normal ON/OFF switch and the trailing-edge dimmer fitted to the board. A licensed electrician connects the unit to the compatible dimmable lighting circuit.
What is the difference between this product and the $30 standalone dimmer?
This product is the preset switch-board option. The standalone trailing-edge LED dimmer is the individual dimmer mechanism for custom combinations or replacing one compatible switch mechanism.
Why is there a normal switch as well as a dimmer?
The normal switch handles ON/OFF control and the dimmer handles brightness adjustment. GreenLED uses this arrangement to provide a definite OFF control and to avoid relying on the dimmer as the everyday ON/OFF switch.
Can I put a dimmer into a double light switch board?
Yes. A common arrangement replaces one normal switch mechanism with the dimmer, leaving the other switch for ON/OFF control. This preset product is based on that practical switch + dimmer setup.
Can I have two switches plus one dimmer on a 3-gang board?
Yes, a custom 3-gang configuration can use two standard switches plus one dimmer where appropriate. The electrician should determine the required circuit layout. Use the standalone dimmer if you are building a custom combination.
Do I need a special dimmer switch for LED lights?
For dimming, use an LED-compatible dimmer with LED lights that are specifically designed to be dimmed. Standard non-dimmable LEDs should remain on a normal ON/OFF switch.
What is the dimmer load range?
The current specification lists a minimum load of 5W and a maximum of 150W.
Can I use it with GreenLED's 10W dimmable downlights?
The GreenLED 10W downlight is listed as dimmable and its wattage is within this dimmer's stated load range. Final circuit compatibility and the number of fittings per dimmer should still be confirmed by the electrician.
Why can LED lights flicker on a dimmer?
Common causes include a non-dimmable light, an incompatible driver, a load outside the dimmer's operating range or a circuit compatibility issue.
Can I install this dimmer switch myself?
GreenLED recommends installation by a licensed electrician. This is a mains-voltage electrical control product, and licensed installation is also part of the stated warranty condition.
Can it be used outdoors?
No. The product is listed for indoor use only and is not IP rated.
Buy an LED Dimmer Switch in NZ
Choose this GreenLED preset LED dimmer switch when you want the practical combination of a normal ON/OFF switch plus trailing-edge brightness control on one switch board. For a custom multi-switch arrangement, see the standalone trailing-edge LED dimmer.