White dimmer with golden knob
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WiFi Dimmer Switch – White, Push/Rotary, No Neutral, Tuya, Alexa & Google Home (SM323-WF)

(15 customer reviews)

£26.66£84.15

WiFi rotary dimmer with white plastic knob & faceplate – no neutral, no hub required. Direct Tuya/Smart Life pairing, Alexa and Google Home compatible. Premium knurled metal knobs available in multiple finishes across 4 gang configurations.

  • Direct Wi-Fi pairing via Tuya / Smart Life app – no hub or bridge required
  • No neutral required – works on UK two-wire lighting circuits
  • Push to toggle, rotate to dim – traditional dimmer feel with app and voice control on top
  • Dims LED, halogen and incandescent loads up to 200 W
  • Alexa and Google Home voice control; schedules, scenes and timers via the app

Press the Configure button to enter the product configurator (next element)

Product Variation: Actual product colour may vary slightly from the generated images shown due to lighting, screen settings, and manufacturing variations

Description

The SM323-WF is Samotech’s smart WiFi rotary dimmer with a white plastic faceplate. Push to toggle, rotate to dim — the familiar feel of a traditional wall dimmer, now with app and voice control. Pairs directly with your home router through Tuya Smart or Smart Life, so no hub or bridge is required. The dimmer also fits two-wire UK lighting circuits without a neutral connection at the switch.

Smooth dimming for LED, halogen, and incandescent loads up to 200W. Build schedules, scenes, and timers from your phone, and use Alexa or Google Home voice routines to dim individual rooms or whole-house lighting at once. Available in multiple knob finishes across 1-, 2-, 3- and 4-gang configurations on a sleek white plastic faceplate.

Key features

  • Plate finishes – Plastic
  • Knob finishes – Multiple options
  • 1, 2, 3 & 4-gang configurations – control multiple circuits from one wall position
  • No neutral wire required – fits standard UK two-wire lighting circuits
  • Push to toggle, rotate to dim – traditional rotary feel with smart functionality
  • Protocol – WiFi 2.4 GHz
  • Voice control – Amazon Alexa and Google Home routines once linked
  • Up to 200W dimmable – LED, halogen, or incandescent loads

Additional information

Weight 40 g
Gang count

1-gang, 2-gang, 3-gang, 4-gang

Knob colour

Antique Brass, Black, Chrome, Gold, Grey, Metal White, Plastic White, Silver

Brand

Samotech

Frequently Asked Questions

Does the SM323-WF require a neutral wire?

No. The SM323-WF is designed for two-wire UK lighting circuits without a neutral. Wiring connects to live (L) in and switched live (SL) out only – the same as a traditional rotary dimmer it replaces.

Will the SM323-WF fit in my back box?

The dimmer module is 64 × 27 × 24 mm and fits a standard UK single back box. We recommend a 35mm-deep back box for comfortable wiring and cable routing. Always confirm there is enough clearance behind the faceplate before mounting.

Which bulbs are compatible with the SM323-WF?

Trailing-edge dimmable LED bulbs (up to 200W total load), dimmable halogen, and incandescent lamps. Non-dimmable LEDs will not dim and may flicker or fail. Check the Bulbs Compatibility Matrix tab on this product page for a verified list.

Does the SM323-WF need a hub or bridge?

No. The dimmer connects directly to your 2.4 GHz home WiFi network through the Tuya Smart or Smart Life app. No Zigbee hub, Tuya gateway, or proprietary bridge is required.

Does it work with Alexa and Google Home?

Yes. After pairing with Tuya Smart or Smart Life, link the same account in the Amazon Alexa or Google Home app to enable voice control, routines, and group dimming across multiple devices.

What is the minimum load?

5W minimum. Below this, LED bulbs may flicker or fail to dim smoothly. For single low-wattage LED installations, an LED bypass capacitor across the bulb can resolve residual flicker.

Can I control the dimmer when I am away from home?

Yes. Tuya Smart and Smart Life support remote control, scheduling, scenes, and timer functions over the internet. No additional cloud subscription is required for these features.

What is included in the box?

The complete dimmer assembly – module, plate, and knob in your chosen finish – plus mounting screws and a quick-start installation guide. The faceplate and knob are factory-fitted to the module ready for installation.

Manual

Samotech SM323 WIFI Dimmer Switch Manual

Technical Data

Wi-Fi Dimmer Module

Bulbs Compatibility Matrix

BULB / LOAD TYPE COMPATIBILITY RISK LEVEL TYPICAL SYMPTOMS RECOMMENDATION
SAMOTECH Dimmable GU10 SAMOTECH GU10 Compatible None None Recommended
Incandescent / Halogen Incandescent Halogen Compatible None None Recommended
Dimmable LED (Quality brands) Quality LED bulbs Compatible None None Recommended
Dimmable LED (Cheap / unknown) Cheap LED bulbs Conditional Very Low Minor flicker. May not turn off fully. Test first. Use a bypass if required.
Low load LEDs (<15W) Low load LED bulbs Conditional Very Low Minor flicker. May not turn off fully. Use a bypass
LED strips (220V dimmable driver) LED strip dimmable Conditional Medium Minor flicker Test first
Integrated LED fittings (separate LED driver, colour modes) Integrated LED fitting Conditional Medium Flashing or intermittent operation due to internal LED driver control Test first
Non-dimmable LED Non dimmable LED Not compatible High Flicker, overheating Do not use with dimmers
Smart bulbs Smart bulb Not compatible High Disconnects, rebooting Do not use with dimmers
LED strips (220V non-dimmable driver) Non dimmable LED strip Not compatible High Flicker, overheating Do not use with dimmers
Fluorescent / CFL CFL bulb Not compatible High Failure to start Do not use with dimmers

15 reviews for WiFi Dimmer Switch – White, Push/Rotary, No Neutral, Tuya, Alexa & Google Home (SM323-WF)

4.8
Based on 14 reviews
5 star
78
78%
4 star
21
21%
3 star
0%
2 star
0%
1 star
0%
1-10 of 14 reviews
  1. Would be nice is the plate was not plastic, functionality is excellent though

    (0) (0)
  2. From a technical point of view the switches are good , they run without a neutral wire and work with LED or incandescent bulbs and easy to set up.
    The only criticisms I have is that the plastic front plate is quite flimsy and is mainly held on by the knob, also when manually turning a light on there is a slight delay but I don’t know if this common to all smart dimmers of this type

    (1) (0)
  3. Easy to install and configure with the app. Great product, so good!

    (0) (0)
  4. 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 for money, connected to the Tuya app without issue and in turn Google home. You need to look up some commands on Google for voice controlled dimming. The soft transition between off and on is excellent, as is switching off and on. No buzz like other products I have tried. Only been installed a few days but working A1. Electrician found them easy to install but check the dimensions of your back box behind your current light switch to make sure they fit.

    (2) (0)
  5. The switches are great, just what I was looking for. Easy to install and set up too.

    (0) (0)
  6. Excellent product, so easy to install and operates exactly as I wanted.

    (0) (0)
  7. Extremely happy with this. Exactly what I wanted and couldn’t find anything like it elsewhere. Subtle smartness. Works a treat!

    (0) (0)
  8. Perfect smart dimmer that I’ve managed to link to Apple Home via the Tuya Homebridge plugin.

    (0) (0)
  9. Great product. Easy installation. Easy set up. Works perfectly with Google home as well.

    Very happy

    (0) (0)
  10. replaced a standard light switch with this it has worked fine

    (0) (0)
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