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Kasa Smart KS240 Ceiling Fan and Dimmer Switch1 / 7
Product guide

Kasa Smart KS240 Ceiling Fan and Dimmer Switch

Dimmer: Kasa Smart KS240 combines ceiling-fan speed control and light dimming in one smart wall switch. It offers four fan speeds, 1%–100% dimming, app and voice control, but requires a neutral wire and a single-pole installation.

At a glance

  • Controls ceiling-fan speed and light dimming from one switch.
  • Offers four fan speeds and adjustable light brightness from 1% to 100%.
  • App control, schedules, countdown timers and voice-assistant support are listed.
  • Sleep Mode can lower the connected fan to its lowest speed after a user-set time.
Price
$37.99Save 24%

Reference price: $49.99

Price checked: Nov 14, 2026

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Often bought together

Pros and cons

Pros

  • Combines fan-speed and light-dimming controls in one wall switch.
  • Four fan-speed settings and a broad dimming range provide separate adjustments for airflow and light.
  • Scheduled operation and remote app control can help automate routine fan and light use.
  • Listed compatibility includes Apple Home, Amazon Alexa and Google Assistant.

Cons

  • Requires a neutral wire and a single-pole circuit, limiting installation suitability.

Technical specifications

12 specifications
Identity
BrandKasa Smart
ModelKS240
Connectivity and controls
Wireless connection listedWi-Fi
Control methods listedApp
Compatible platforms listedApple Home, Amazon Alexa, Google Assistant
Fan speed settingsFour adjustable fan speed settings
Light dimming range1% to 100%
Electrical and installation
Current rating2.5 A
Circuit configuration1-way
Mounting types listedPole,Wall Mount
Dimensions and materials
Dimensions listed10.5 x 4.4 x 4.2 centimetres
Material listedMetal, Plastic

What to know before buying

Listing details to confirm

Installation requires a neutral wire, separate fan and light load wires, a single-pole configuration and 2.4 GHz Wi-Fi for smart functions. The listing gives differing electrical details: 2.5 A current rating and 1875 watts in specifications, versus a 1.5 A maximum fan load and separate light-load limits in the description. Confirm the intended motor and light loads and local electrical suitability before purchase. The listing also varies in stated dimensions.

What’s in the box

Included
  • KS240 switch, 1
  • Wall plate
  • Wire nuts
  • Mounting screws
  • Quick Installation Guide

Who is it for?

A good fit for

  • Homes with a neutral wire and a single-pole switch location seeking combined fan and light control.
  • Buyers who want scheduled fan operation, adjustable light brightness and app or voice control.

Less suited to

  • Installations without a neutral wire or using a multi-way circuit.
  • Buyers who need confirmed compatibility with a particular fan motor or light fixture without checking the load limits.
Kasa Smart KS240 Ceiling Fan and Dimmer Switch · photo 2
Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 852 ratings
  • 5 stars73%73%
  • 4 stars13%13%
  • 3 stars5%5%
  • 2 stars4%4%
  • 1 star5%5%

Customer feedback describes the switch as effective and easy to install and use, with positive comments about reliability, functionality and value. Experiences are mixed on compatibility, fan speed settings, brightness control and customization. For buyers using the listed four-speed and dimming functions, those varying experiences make checking the specific fan, light and desired controls important.

Positive themes

  • Customer feedback characterizes installation and everyday use as straightforward.
  • Feedback highlights perceived effectiveness and reliability.

Mixed feedback

  • Customer experiences vary on compatibility, fan speed settings, brightness control and customization.

Frequently asked questions

Does the KS240 require a neutral wire?

Yes. The listing says it requires a dedicated neutral wire, separate fan and light load wires, and a single-pole configuration.

Can it control the fan and light separately?

The listing describes separate fan-speed and light-brightness controls, with four fan speeds and light dimming from 1% to 100%.

Which smart-home platforms are listed?

Apple Home, Amazon Alexa and Google Assistant are listed. The listing also specifies Wi-Fi and 2.4 GHz Wi-Fi for smart functionality.

What should I verify before installation?

Check that the wiring is single-pole and includes a neutral wire and separate fan and light load wires. Confirm the fan motor and light loads because the listing's electrical ratings are inconsistent.

Kasa Smart KS240 Ceiling Fan and Dimmer Switch · photo 3
Additional product photo 3

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