The solar panel can supply unlimited power to the Curtain 3 according to SwitchBot, as long as it gets 3 hours of sunlight per day. It’s attached permanently with a clip via USB-C and hangs behind your drapes facing the window. The Curtain 3 bot carries the solar panel whenever it moves, keeping the battery charged at all times.

The app isn't the most intuitive software I’ve ever used, but I eventually discovered a Silent option in the Motion Mode settings. “Silent” is an exaggeration, but it does run much quieter. It's a trade-off, because it runs much slower and opens the curtains only about halfway. Still, it does encourage me to get out of bed rather than doomscroll for half an hour. SwitchBot is running a sale currently in various online stores, here’s how to get the most of it depending on your location. Most smart curtains require to you replace the curtain rail with a new one, but the SwitchBot Curtain is different. Here, you get a robot that clips onto your existing curtain rail, moving side-to-side to open or close your curtains automatically.

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I’ve written about SwitchBot products a couple of times in the past, disassembling and thoroughly testing each device they sent me. Build quality is better than most in their respective categories and even though I’m heavily against using cloud-based ecosystems, SwitchBot has one of the best apps and user interfaces when it comes to proprietary Smart Home controllers. You’ll need to buy one SwitchBot Curtain per physical curtain. For two curtains that meet in the middle, you’ll need two SwitchBot Curtains. For testing, I had two SwitchBot Curtain Rod models. If you want remote control, you need to install the SwitchBot Hub Mini, which can also act as an IR transmitter if you want to control practically any device, from a TV to air-con. With the Hub installed, your SwitchBot Curtain will automatically communicate with this device (provided it’s within Bluetooth range). That gives you remote control over your curtains, including scheduling. However, this may not be that useful. After all, walking into a room, pulling out your phone, opening the app and then closing or opening your curtains is actually more difficult and time-consuming than simply walking over to them and opening/closing them manually. Why would you need a robot that automatically opens your curtains anyway, they asked. “Need” is a bit strong, but the temptation of the SwitchBot is automation. Wouldn’t it be nice to wake up with sunlight touching your face instead of an alarm (or, in our house, a cat crying for breakfast)?

After the pathetic first attempt at opening my curtains, I tried refitting the SwitchBot. I placed one on the right curtain and one on the left. There's a kind of ratcheting arm that goes over the curtain rod, with little wheels on the inside, and you clamp it on the rod between the first and second curtain rings. (You can also get SwitchBots that work with U Rail and I Rail curtains.) Now go and create a Script using the below YAML code. This script calls the REST command with the requested curtain position. It then loops around waiting for 30 seconds each time and updating the curtain position sensor. It does that a few times because it takes so long for the curtains to move using QuietDrift. alias: Curtains Set Position Quiet The SwitchBot Curtain 3 is the quietest curtain motor out there, without a doubt. The trademarked QuietDrift mode produces virtually no noise at the expense of battery life and speed. Depending on your windows, you can simply get the solar panel combo and not worry about battery ever again. Bluetooth connectivity is handled through the BM-8762CMF Bluetooth 5.0 BLE Module [ Datasheet] manufactured by CC&C Technologies in China, which is based on the Realtek RTL8762C [ Datasheet] Bluetooth low-energy SoC.Like other SwitchBot products I’ve tested, the Curtain 3 is built really well and feels like a premium device. It’s certainly a significant improvement over the Curtain 2, but if you already own the previous generation of SwitchBot curtain motors I do not feel it’s necessary to upgrade. As smart as our homes have become, most of us still have to get up to close (or open) our curtains, since motorised rails are expensive and can be difficult to fit. However, the SwitchBot Curtain provides a simple upgrade that turns your dumb curtains into smart ones in a matter of minutes. I have various types of blinds and curtains in my home, the most common being beaded chain roller curtains (controlled with Aqara E1). Now I’m thinking I should switch to drapes and use the SwitchBot Curtain 3 everywhere instead. It’s so quiet!

Connectivity was not an issue for me, but It’s important to note I work diligently to eliminate interference between Bluetooth, Zigbee and Wi-Fi. I use Bluetooth proxies with cheap ESP32 boards to create a better connection and integrate Bluetooth devices in Home Assistant. It wouldn’t be a true SmartHomeScene review if the device isn’t dismantled, no matter what kind it is. The SwitchBot Curtain Rod 3 ships in a branded box containing the main unit, a pair of hooks, beads chain, some clips, USB-C cable, magnet attachment for positioning and a user manual.The cable of the panel goes through a plastic tube which swivels on three places for flexibility. This prevents the cable from damage while hanging from the curtain bot. You can skip the solar panel if you want too, the battery should last about 8 months on a single charge (open and close once a day) but I highly suggest you get it too because it’s relatively inexpensive. I like the convenience of automatic closing curtains. It's handy! I set it to close the curtains at dusk; it helps keep in the heat and saves me a chore, something I've often forgotten before bed. But it's hard to look past the aforementioned issues. If you have grommet-style curtains, that is the type with holes punched into it like I have, then you need the special “plastic clips on a bead chain” that comes with it. The clips attach over the top of the curtain through the grommets, and if you set the bead spacing just right it keeps each grommet at the correct angle to prevent the curtain from jamming as it is pulled along. It’s really quite a clever bit of engineering. But let’s pretend for a minute that you actually have a use-case for QuietDrift – if you are also using Home Assistant and Matter, then you won’t be able to make use of QuietDrift that way. You can use the SwitchBot automations if you like, but if you prefer to use Home Assistant automations then you’ll need to use the SwitchBot API.

Ok so you really must get the solar panels that go with them. They are really easy to install – they’ve got a long arm that unfolds so as the panels can sit neatly within the window to get full sunlight. They clip in to the bottom of the SwitchBot Curtain really easily, and they’ve also got a light sensor in so they know if it’s day or night. To make use of that sensor in automations though you will need a hub, and your best option there is the SwitchBot Hub 2. End position magnets SwitchBot Hub 2What is it with teenagers and curtains? They either don’t bother closing them when it gets dark, or they never open them during the day. SwitchBot have very kindly offered to help me with this little problem. They’ve sent me a pair of the new SwitchBot Curtain 3 robots which are designed to turn almost any type of curtain into a smart curtain. The new SwitchBot Curtain 3 is much quieter than the Curtain 2 model, as it has a QuietDrift mode to keep the noise level at only 25 dB. This mode is slower, but it makes for a quiet, less distracting experience. App control was slightly less reliable through the Hub Mini, however. Quite a few times, I’d have the app saying that it couldn’t communicate with the SwitchBot Curtain and would have to retry; it would always work at the second attempt, though. Conclusion Opening up the plastic enclosure was a bit of a challenge, I was afraid of messing up the layout but curiosity got the better of me. There are a total of 6 gears which the DC motor turns, with two plastic spur gears in the middle. They are all oiled up to reduce friction/noise and increase their lifespan.