SwitchBot Launches Curtain Track 4 for Existing U-Rail Curtains

SwitchBot, a provider of AI-enabled embodied home robotics systems, announced Curtain Track 4 on November 11, 2026, making the retrofit motor for compatible U-rail curtains available through its store and Amazon from $109.99, with a Battery+ version rated for up to 12 months per charge.

Other listed starting prices are C$139.99, £99.99 and €99.99. The retrofit approach preserves compatible curtains and tracks already installed, putting installation and maintenance at the center of the upgrade.

Retrofit Hardware and Power Options

On compatible tracks, installation requires no positioning magnets, replacement curtains or home modifications. SwitchBot says setup can take as little as 30 seconds. Its product documentation describes a three-step sequence: insert the battery, attach the left or right unit to the track, then press a button three times to calibrate it.

The motor can move curtains weighing up to 12 kilograms, including heavier blackout curtains, according to SwitchBot. A slimmer assembly reduces required wall clearance to 20 millimeters and dual-track spacing to 40 millimeters, helping the device sit more discreetly behind curtains.

The Battery+ version combines a built-in battery with a detachable module for 6,400 mAh of total capacity. The module can be removed for charging while the motor stays installed on the track. SwitchBot’s stated battery-life estimate varies with curtain weight, travel distance, usage frequency and operating conditions. A Solar version pairs the robot with a solar panel to reduce manual recharging when sufficient sunlight is available.

Automation and Smart-Home Controls

SwitchBot lists QuietDrift movement at 0.5 centimeters per second and operating noise below 25 decibels. Self-lubricating rollers reduce friction and vibration, while Touch&Go starts the motor after a gentle pull. The SwitchBot app and optional SwitchBot Remote provide additional controls.

Schedules can open curtains in the morning and close them in the evening. The product supports single- and double-opening setups, with independent left and right positioning from 0% to 100% open; Privacy Mode closes the curtains together. Curtains across multiple windows can join Morning, Sunset or Leave Home routines, and the product page says a group can be closed with one tap.

A compatible SwitchBot Hub adds Alexa, Google Assistant, Siri Shortcuts, SmartThings and Matter integration. The hub, remote and other accessories are sold separately unless included in the selected package. Consequently, the starting price does not necessarily include the hardware needed for every listed integration.

Track Compatibility Requirements

The official compatibility guide supports square U-tracks with an open-bottom channel and lists R-rail, T-rail and I-rail profiles as incompatible. It also requires all four track-dimensional checks to pass, so the U-rail label alone does not establish fit.

Curtain Track 4’s launch focuses on reducing the physical upkeep of curtain automation while keeping compatible curtains and tracks in place. The track guide limits where that retrofit approach applies, and the selected package or additional hub hardware determines access to the full integration list, making fit and hub requirements central to the product’s value.