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Dimmer Knobs – Ø19mm x 14mm, Universal Spare Replacement, 6 x 4.5mm D-Spindle

(5 customer reviews)

£0.83 – £2.70

 

Dimmer knobs for Samotech rotary Zigbee, Matter and WiFi. Sleek modern design, durable build and high quality knobs.

 

  • Universal spare replacement dimmer knob – fits most rotary dimmer modules
  • Standard 6 mm D-spindle fitting with 4.5 mm flat – matches the Samotech SM323 module shaft
  • Knurled metal grip for a positive turn
  • Direct fit on existing SM323 modules and other universal rotary dimmer shafts
  • Replacement-grade build quality – designed as a like-for-like swap for the original knob
SKU: SM-KNB-V Category:

Description

Crafted with precision, our sleek and modern dimmer switch knob offers a smooth blend of functionality and style. Designed to enhance any room’s ambiance, its smooth operation ensures precise control over your lighting. Made with durable materials, it promises longevity and is a perfect fit for contemporary interiors. Upgrade your lighting experience with this sophisticated dimmer knob.

Compatible with Zigbee, Matter & WIFI rotary dimmer modules by Samotech and most standard UK dimmers with 4.5mm D shaft size.

Additional information

Style

White, Silver, Gold, Black, Grey, Bronze
Brand

Samotech

Frequently Asked Questions

Which Samotech dimmers do these knobs fit?

The SM-KNB-V dimmer knobs are compatible with all Samotech rotary dimmer modules — SM323 Zigbee Dimmer, SM323 Matter Dimmer, SM323 WiFi Dimmer, and the rotary face on SM309/SM309-S in-line dimmer modules where applicable.

Will these knobs fit standard UK dimmers?

Yes. The knobs also fit most standard UK dimmer switches with a 4.5mm D-shaft size. If your existing dimmer has the standard 4.5mm D-shaft, these knobs will be a direct replacement.

What variants are available?

The SM-KNB-V range covers multiple knob colours and finishes to match common interior styles — choose the variant that matches your dimmer faceplate and interior. (See the product page for available colour options.)

Why might I want to replace my dimmer knob?

Customers replace knobs to: match a new colour scheme, restore a worn or scratched original knob, change material (e.g. to a metal knob for a premium feel), or to provide a fresh look without replacing the entire dimmer module.

What material are the knobs?

The knobs are made from durable, premium materials chosen for longevity and modern aesthetics. For metal-finish variants (chrome, brass), the knobs are metal; other variants use plastic with various finishes.

How do I install a replacement dimmer knob?

Switch off the mains supply at the consumer unit before any work. Pull the existing knob straight off the shaft (it’s a friction fit), then push the new knob onto the 4.5mm D-shaft. Restore mains supply and test operation.

5 reviews for Dimmer Knobs – Ø19mm x 14mm, Universal Spare Replacement, 6 x 4.5mm D-Spindle

5.0
Based on 5 reviews
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  1. Fabjan K.
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  2. Sarah
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  3. Domas
    Verified owner
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  4. Luke
    Verified owner
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  5. Matthew
    Verified owner

    Wonderful service, thank you!

    (0) (0)
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What customers say
★★★★★

“The Samotech team went above and beyond for me with this purchase. I'm from Australia and had been looking all over for a Zigbee pull cord dimmer.”

Alexei W. · Verified owner
★★★★★

“Straightforward good quality switch, love the inclusion of Thread. Easy to set up with Apple Home via Matter.”

Alex · Verified owner
★★★★★

“Works great with the 5-in-1 Gledopto Zigbee LED driver I bought.”

Mark B. · Verified owner
★★★★★

“These modules are definitely the best product on the market, by a long way.”

Anthony Nash · Verified owner
★★★★★

“I had 10 in the house I bought to replace Shelly Dimmer 2s. I've had them for a year and I'm now adding more, no problems.”

Tómas Aron · Verified owner
★★★★★

“I think these dimmers are great. I researched a long time for a product like this that doesn't cost the earth. They're good value.”

Martin O. · Verified owner
★★★★★

“Works well with SmartThings using the generic Zigbee Dimmer handler, and with Ikea dimmable LEDs.”

Damian · Verified owner
★★★★★

“Lovely item and just what I needed!”

chase_spring · Verified owner
★★★★★

“Great product, well made, easy to set up, and works exactly as expected. Delivery was quick and everything functioned perfectly.”

Lance · Verified owner
★★★★★

“Great product. I'm using two of these with ZHA in Home Assistant and haven't had any issues at all.”

Mark B. · Verified owner
★★★★★

“This is a really good dimmer and works flawlessly with Zigbee integration in Home Assistant, giving simple control and power statistics.”

Dave Sussman · Verified owner
★★★★★

“Working perfectly so far. We went for white faceplates and they look great.”

Dominic · Verified owner
★★★★★

“So far I'm impressed with Samotech. I wanted a discrete smart dimmer solution that is 'wife approved' and I think I've found it.”

Mark · Verified owner