Please read carefully
This explanation is longer than a typical FAQ, but it’s important.
It includes everything you need to know to ensure your Tuiss shades with sun-based timers operate reliably, automatically, and without interruptions.
Introduction
Sun-based timers automatically adjust your shades based on your local sunrise and sunset times.
To stay accurate, your blinds need to sync their internal clocks daily via the app using a Bluetooth® connection.
This background sync feature is designed to minimize manual effort. It keeps your shades aligned with daily sunrise and sunset times automatically—no need to open the app or manually sync each room.
This process runs in the background, but only when certain conditions are met.
Why is synchronization necessary?
Sunrise and sunset times shift slightly each day—especially in northern regions, where the change can be 4 to 6 minutes daily.
Daily synchronization ensures your shades follow the correct schedule.
Tuiss doesn’t use a dedicated hub. Instead, your phone or tablet acts as a “hub” when the app is running in the background, updating your shades with sun-based timers each day.
How synchronization works
Synchronization occurs at the room level. Each room can contain up to five shades.
When a room syncs successfully, all shades in that room (with sun-based timers) are updated at once.
You can view the latest sync time next to each room on the Timer Sync page (under Settings). You can also manually sync from this page if needed.
About background updates
The app attempts multiple syncs per day until it has tried to update all rooms with sun-based timers.
The timing of these syncs is random and governed by Apple and Google system rules, which limit how long and how often the app can run in the background.
If your phone or tablet is away from home during these times, the sync will fail due to being out of Bluetooth range. For best reliability, we recommend keeping one or more phones or tablets at home with the Tuiss app running in the background. This ensures a stable Bluetooth connection during automatic syncs.
These updates run silently in the background—no LED flashes, motor movement, or beeps. This quiet behavior is supported by the latest firmware. Keeping your shades updated helps avoid unnecessary feedback or interruptions.
Battery usage and background sync
Running the Tuiss app in the background uses minimal power:
- Bluetooth Low Energy consumes very little power when idle.
- Syncs are brief and occur only a few times daily.
- Battery drain is significantly lower than GPS, screen use, or streaming.
On iPhones, each background session is short (often under a minute). Android devices behave similarly, depending on system settings.
If you notice increased battery usage, go to Settings → Battery → Usage to check if the app is running more often than expected.
Keep the app running
Do not force close the app. Keeping it active in the background allows it to perform syncs automatically.
Use a dedicated device and place it centrally
The app only updates shades within Bluetooth range.
- Keep your phone or tablet centrally located relative to your shades.
- For best results, use one or more devices running the app in the background, placed centrally in your home to maintain connection with all shades.
Check your phone settings
Ensure the following are enabled:
- Bluetooth – Required for communication between the app and your shades.
- Background App Refresh (or “Allow background activity”) – Allows the app to run brief sync sessions automatically.
- Location – Only needed when creating a sun-based timer for the first time. It helps determine your time zone and daylight-saving schedule so sunrise/sunset times are calculated correctly.
- Power Saving Mode – Avoid power-saving settings that may prevent the app from running in the background.
Manual syncing
You can manually sync a room at any time, even if it’s not necessary. However, it’s best to use manual sync only if the automatic background process continues to fail.
To do this, go to the Timer Sync page, move within Bluetooth range, and tap Sync for the room that failed.
Notifications for missed syncs
If a room hasn’t synced in a while, you’ll receive a push notification. You can choose to be notified after 1 Day, 3 Days (default), or 1 Week.
Go to Profile → Notifications in the app.
If a shade keeps failing to sync
If one or more shades haven’t synced for several days, check the following:
- Bluetooth range – The shade may be too far from your device. Try moving the device closer or placing it more centrally.
- Battery level – Low battery in the motor can reduce Bluetooth range and cause sync failures.
- Permissions – Ensure Bluetooth, Location, and Background App Refresh are still enabled.
- App status – Don’t swipe the app away from your recent apps list. Keep it open in the background.