A Year on One Charge: SwitchBot Unveils Curtain Track 4 for U-Rails

SwitchBot has launched the SwitchBot Curtain Track 4, a new curtain robot that automatically opens and closes your existing curtains on a U-rail. The biggest change from earlier models is the battery. The new Battery+ version lasts up to 12 months on a single charge, and you detach the battery module to charge it while the robot stays on the rail. The Curtain Track 4 is available from SwitchBot and Amazon, starting at $109.99, £99.99 or €99.99.

Curtain Track 4 fits on your U-rail in 30 seconds

The Curtain Track 4 is designed for U-rails and installs in about 30 seconds, without replacing your curtains or modifying your home. Positioning magnets are no longer needed: the robot tracks its position by counting the rotations of its rollers. The housing is slimmer, so it needs just 20 mm of clearance between the rail and the wall, and 40 mm between rails on a double track. That makes it less visible behind your curtains. The motor pulls curtains of up to 12 kg and also works on telescopic rails. Note that the Curtain Track 4 only works with U-rails. If your curtains hang from a rod, the rod version of the SwitchBot Curtain 3 remains the one to look at.

Up to 12 months on a single charge

The Battery+ version combines a built-in battery with a detachable battery module, for a total capacity of 6,400 mAh. SwitchBot says that is good for up to 12 months, although that depends on the weight of your curtains, the distance they travel and how often they move. With only the built-in battery, you get around 3 months. If you would rather not recharge at all, there is also a Solar version with a solar panel that tops up the battery as long as there is enough sunlight. Charging is via USB-C in all cases.

Quiet opening with QuietDrift, and Matter through a hub

In the SwitchBot app you set schedules, for example to open your curtains in the morning and close them in the evening. The new QuietDrift mode moves the curtains very slowly, at 0.5 cm per second and under 30 dB, so you wake up gently to daylight. In standard mode the robot moves at 10 cm per second. Touch&Go starts the motor when you give the curtain a light pull, and self-lubricating rollers reduce friction and vibration.

The Curtain Track 4 connects to your phone over Bluetooth. To control it with Alexa, Google Assistant, Siri Shortcuts or SmartThings, or to add it via Matter, you need a compatible hub such as the SwitchBot Hub 3. That also lets you include curtains in several rooms in a single routine, for example for a morning or evening scene.

SwitchBot Curtain Track 4 price and availability

The SwitchBot Curtain Track 4 is available from November 11 through the SwitchBot website and Amazon. The Battery+ version costs $109.99, £99.99 or €99.99, the Solar version $119.99, £109.99 or €109.99, and a two-pack of Battery+ robots $199.99, £179.99 or €179.99. A hub and the SwitchBot Remote are not included and are sold separately. If you have a U-rail and want to make your curtains smart, the SwitchBot Curtain Track 4 with Battery+ is the logical place to start.