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  • SwitchBot Curtain 3
  • Curtain 3
  • Curtain 3
  • Curtain 3
  • Curtain 3
  • Curtain 3
  • Curtain 3
  • Curtain 3
Last updated September 2026
Best Seller

SwitchBot Curtain 3

A retrofit motor that pulls up to 15 kg of curtain on the rail you already own, quiet enough for a bedroom, with a hub needed for voice control.

4.4
168 ratings

4.4 vs the 4.1 average of 10 window coverings we track

$89.99
As an Amazon Associate I earn from qualifying purchases
Launch Year: 2023

Model: W2400000

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Our review

SwitchBot Curtain 3 Review: The Easiest Way to Wake Up to Daylight

The verdict

The Curtain 3 clips onto an existing rod or ceiling track and turns the curtains you already have into something that opens at sunrise, with no drilling, no new hardware and no measuring. It is the strongest retrofit curtain driver in this catalog on paper, rated for 15 kg of fabric and quoted below 25 dB in silent mode, and owners consistently describe the install as the easy part. The catch is that everything beyond the phone app, from voice control to sunrise triggers, runs through a SwitchBot hub that is sold separately, and heavy or slightly bent rails are where the motor struggles.

Best for
  • Renters
  • Hard to reach windows
  • Bedroom wake-up routines
  • Existing curtain rails

Pros

  • Clips onto an existing rod or rail with no tools and no drilling
  • Rated for curtains up to 15 kg, the highest in this category
  • Silent mode runs below 25 dB, quiet enough for a bedroom
  • Touch and Go: a pull on the fabric finishes the movement by hand
  • Works locally with Home Assistant over Bluetooth, with no SwitchBot hub

Cons

  • Voice assistants, Matter and sunrise triggers all need a SwitchBot hub, sold separately
  • The light sensor is in the optional solar panel, not in the motor
  • Heavy drapes or a bent rail cause sticking and repeated recalibration
  • No physical remote in the box

Who is the SwitchBot Curtain 3 for?

This is the answer for a window whose curtains you like and do not want to replace. The motor grips a U rail, an I rail or a curtain rod, walks along it and drags the fabric with it, so nothing about the room changes visually and nothing gets drilled. That makes it the obvious pick for a rented flat, and owners repeatedly reach for it on the windows they cannot physically reach, where a manual pull means fetching a ladder. Pair it with the sunrise schedule and the curtain becomes an alarm clock: several owners describe waking up to natural light as the reason they bought a second one.

What buyers love

Installation is the single most praised thing about it. It ships with a set of adapters for different rail and rod types, the app plays a video walkthrough, and owners with no smart home experience describe getting it running without modifying the rod at all. The build quality gets the same treatment: solid, heavy, well packaged. Once it is up, the automation is what keeps people happy, and the pattern in the reviews is that a first unit turns into a second and a third for other rooms. Battery life holds up under daily use, and the optional solar panel removes the recharge entirely.

What to know before you buy

The motor is a battery-powered device with Bluetooth, and that is all it is on its own. Alexa, Google Home, Apple Home and SmartThings all arrive through a SwitchBot hub, over Matter in the case of the Hub 2, and so do sunrise and sunset triggers, which need the location the cloud provides. The on-device schedule works without one, but it is clock based. The other recurring theme is physical: the rating is 15 kg, and thick lined drapes on an imperfect rail are where owners report the unit crawling, sticking or needing recalibration. One owner reported an audible high-frequency whine their dog reacted to. And the light sensor everyone talks about lives in the solar panel, not in the motor.

Is the SwitchBot Curtain 3 worth it?

Against a made to measure motorised covering it is a fraction of the cost per window and installs in minutes rather than after a site visit, which is the whole argument for a retrofit driver. Against its own siblings it is the one to buy if the covering is a curtain rather than a blind. Budget for the hub if you want voice or sun-based automation, and for the solar panel if the window is high up, because those two accessories are what turn it from a phone-controlled gadget into something nobody in the house thinks about.

Frequently asked questions

Do I need a SwitchBot hub for the Curtain 3?

Not to use it. Bluetooth control from the SwitchBot app and the on-device clock schedule both work on their own. You need a hub for remote access, for Alexa, Google Home, Apple Home and SmartThings, for Matter, and for sunrise and sunset triggers, which depend on a location the hub supplies.

How heavy a curtain can it pull?

SwitchBot rates it for 15 kg. That covers most lined curtains, but the practical limit is friction as much as weight: a rail with a kink in it, or gliders that bind, will stop a motor well below its rating.

Will it fit my curtain rail?

It supports U rails, I rails through an accessory kit, and rods, with an extendable rod needing a diameter of 5/8 inch or more. Check the rail type before ordering, since the rod and rail versions are different products.

How long does the battery last?

SwitchBot quotes eight months on a full charge from its 3350 mAh cell, recharged over USB-C. The optional solar panel keeps it topped up indefinitely and is the accessory worth adding on a window you cannot easily reach.

Does it work with Home Assistant?

Yes, and without a SwitchBot hub. Home Assistant talks to it directly over Bluetooth through the official SwitchBot integration, and owners running an ESPHome Bluetooth proxy use that to cover windows out of range of the machine itself.

At a glance

Summary

Everything this window covering supports, grouped by category.

Size & Materials
3.1 × 2.8 × 8.1 in (78 × 71 × 205 mm)9.9 oz (280 g)
Covering
Curtains
Installation
Retrofit KitMax Covering Weight (33.1 lb, 15 kg)Tool-Free Installation
Motor & Operation
Noise Level (25dB)Position ControlManual Operation
Power
Rechargeable BatterySolar Charging (Sold separately)
Connectivity
2.4 GHz WiFi (SwitchBot Hub required)Bluetooth
Integrations
Google Home (SwitchBot Hub required)Alexa (SwitchBot Hub required)Apple HomeKit (SwitchBot Hub required)Samsung SmartThings (SwitchBot Hub required)Home AssistantMatter (SwitchBot Hub required)
Features
Light Sensor (Sold separately)SchedulingSunrise & Sunset Scheduling (SwitchBot Hub required)Group Control

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Company
SwitchBot logo

SwitchBot

4.2/ 5 avg ratingHong Kong flagHeadquartered in Hong Kong

SwitchBot makes a versatile range of smart home gadgets, most famously the SwitchBot Bot that physically presses existing buttons and switches. Its catalog includes curtain robots, smart locks, sensors, plugs and the SwitchBot Hub, which adds IR control and Matter compatibility. SwitchBot is popular for making non-smart devices smart without rewiring.

Full specifications

Every spec, organized

Browse the full breakdown by category. Tap the on any row for what it means, or the for sources and documentation.

Size & Materials
Dimensions

3.1 × 2.8 × 8.1 in (78 × 71 × 205 mm)

Weight

9.9 oz (280 g)

Available in colors

NO

Covering
Covering Type

Curtains

Clips onto an existing U rail, I rail or curtain rod and walks along it dragging the fabric.

Installation
Retrofit Kit

YES

Made to Measure

NO

Max Covering Width

-

Max Covering Weight

33.1 lb (15 kg)

SwitchBot rates the Curtain 3 for curtains of up to 15 kg (33 lb).

Tool-Free Installation

YES

Motor & Operation
Noise Level

25dB

Silent Mode keeps the motor below 25 dB.

Position Control

YES

Slat Tilt Control

NO

Manual Operation

YES

Touch and Go: pulling the curtain by more than about 5 cm makes the motor finish the movement.

Light Control
Blackout

-

Light Filtering

-

Thermal Insulation

-

Power
Wired

NO

Battery Type

Lithium-ion 18650

Battery Life

8 months

Rechargeable Battery

YES

Solar Charging

Sold separately

SwitchBot Solar Panel 3 is an optional accessory.

Connectivity
2.4 GHz WiFi

SwitchBot Hub required

Bluetooth

YES

Zigbee

NO

Thread Protocol

NO

Z-Wave

NO

Other

NO

Integrations
Google Home

SwitchBot Hub required

Alexa

SwitchBot Hub required

Apple HomeKit

SwitchBot Hub required

Reaches Apple Home over Matter through the SwitchBot Hub 2 or Hub 3.

Samsung SmartThings

SwitchBot Hub required

Home Assistant

YES

Home Assistant drives the Curtain over Bluetooth with its official SwitchBot integration, with no SwitchBot hub in between.

Matter

SwitchBot Hub required

SwitchBot exposes the Curtain 3 to Matter through the Hub 2, which acts as the bridge.

Features
Light Sensor

Sold separately

The light sensor lives in the optional SwitchBot Solar Panel 3, not in the Curtain itself.

Scheduling

YES

Sunrise & Sunset Scheduling

SwitchBot Hub required

Sunrise and sunset triggers need the cloud location a SwitchBot hub provides; the on-device schedule is clock based.

Group Control

YES

Remote Control Included

NO

Automations

YES

History Records

NO

Full comparison table

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