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

(26 customer reviews)

£30.99

WIFI Dimmer Switch by SAMOTECH – WiFi rotary dimmer switch – no neutral, no hub required. Control your lights by voice via Alexa or Google. Direct Tuya/Smart Life pairing. 50+ knob and plate finishes; up to 200W LED.

 

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Description

Upgrade your dimmable lights to smart control with ease! Our innovative Smart WIFI Dimmer Switch lets you control LED, incandescent, or halogen bulbs using a classic rotary control. With built-in WIFI, you can conveniently control your lights remotely from your mobile phone, adding smart automation to your home. No neutral wire required, making it compatible with any existing UK wiring. Installation is straightforward, taking as little as 10 minutes. Designed for use with dimmable LED or incandescent/halogen bulbs.

  • Physical and remote control: Enjoy the convenience of controlling your lights either through physical buttons or remotely via the Tuya or Smart Life app on your phone. No additional hub is required as the dimmer connects directly to your existing WIFI router.
  • Energy-saving automation: Take advantage of the automation capabilities to schedule and automate your lights, helping you save on energy costs.
  • Optimal dimming performance: Achieve smooth and precise dimming of your LED bulbs, ensuring the perfect lighting ambiance for any occasion.
  • Easy installation: With a quick and straightforward installation process, you can have the dimmer up and running in as little as 10 minutes.
  • Works with existing wiring: Designed to work in UK homes of any age, the dimmer does not require a neutral wire, making it compatible with a wide range of electrical setups.
  • Compatible with various bulb types: Works well with all certified dimming bulb types, including up to 200-Watt of dimmable LED, incandescent, and halogen bulbs.

Additional information

Weight 40 g
Brand

Samotech

Frequently Asked Questions

How do I control the SM323 WiFi dimmer remotely?

The SM323 WiFi dimmer connects directly to your 2.4GHz WiFi network — no hub or bridge is needed. Control it via the free Tuya or Smart Life app on iOS or Android, and through voice via Amazon Alexa and Google Assistant.

Does the SM323 WiFi dimmer require a neutral wire?

No. The SM323 WiFi dimmer does not require a neutral wire — it installs on standard UK 2-wire lighting circuits without modification.

Which platforms is the SM323 WiFi dimmer compatible with?

The SM323 WiFi dimmer is compatible with Tuya, Lidl Home, Ledvance, BG, Smart Life, Google Assistant, and Amazon Alexa. Setup is via the Tuya or Smart Life app — both free on iOS and Android.

What load can the SM323 WiFi dimmer handle?

The SM323 WiFi dimmer handles 5–100W LED (R,L loads) or 5–200W LED (R,C loads), and up to 200W of incandescent or halogen load. It supports both leading and trailing edge dimming.

Will the SM323 WiFi dimmer work with my existing wiring?

Yes. Designed for UK homes of any age, the dimmer installs on existing wiring without requiring a neutral wire. Installation typically takes around 10 minutes.

Does the SM323 WiFi dimmer require a hub?

No. The SM323 WiFi connects directly to your existing 2.4GHz WiFi router — no Zigbee coordinator, Matter border router, or proprietary hub is needed.

Can I use the SM323 WiFi dimmer with smart bulbs?

No. Smart bulbs and non-dimmable LEDs are not compatible with the SM323 WiFi dimmer — they may flicker, disconnect, or overheat. The SM323 WiFi dimmer is designed for dimmable LED, incandescent, and halogen bulbs only. See the Bulbs Compatibility Matrix tab for full guidance.

What faceplate and knob finishes are available?

Over 50 knob and faceplate finish combinations are available — choose your preferred style during purchase to match your existing wall plates and décor.

Can I disable dimming on the SM323 WiFi and use it just as an on/off switch?

Yes — lights connected to the SM323 WiFi can be turned on or off either by rotating the knob or by simply pressing it. If you want to avoid dimming altogether, just use the press action. Note that with non-dimmable bulbs, accidentally rotating the knob can still cause slight flickering, so dimmable bulbs are always preferred where possible. You can also control the brightness levels via app.

Can the SM323 WiFi be used in decoupled or smart-bulb mode?

The SM323 WiFi is designed to be wired directly to standard 220–240V dimmable bulbs and does not support a true decoupled or smart-bulb mode. The WiFi version uses a Live-only wiring configuration (no neutral terminal), so it must be installed with a connected load.

Are the SM323 WiFi faceplates and knobs metal or plastic?

Samotech faceplates are made of plastic except the Chrome and Brass finishes, which are metal. All knobs are made of high quality aluminium except where the variant name specifically states plastic (for example, "white plastic"). Check the variant you have selected on the product page for the exact material.

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

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

4.9
Based on 26 reviews
5 star
84
84%
4 star
15
15%
3 star
0%
2 star
0%
1 star
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1-10 of 26 reviews
  1. Would be nice is the plate was not plastic, functionality is excellent though

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  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

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  5. Easy to install and configure with the app. Great product, so good!

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  7. 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.

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  9. The switches are great, just what I was looking for. Easy to install and set up too.

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