Shelly 1 Gen 3

Remotely control a wide range of home appliances and office equipment from anywhere. Retrofit your standard electrical wall boxes, power sockets, and light switches or other places with limited space.

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What does “smart sauna” mean?

After a cold or exhausting day, relaxing in your own sauna is bliss. Combine this traditional wellness with digital tech and turn a classic sweat bath into a smart sauna. Sensors automatically regulate temperature and humidity for an ideal climate. You can also connect lighting and music to create a special atmosphere. Everything integrates into your smart-home system so you control each sauna session by smartphone, tablet or voice. 

 

Benefits of smart-home sauna control 

Smart-home control makes your sauna more convenient, efficient and safe. You can simply control the sauna via App – at home or on the go. The benefits at a glance: 

  • MORE COMFORT: Switch your sauna on from the road and arrive to the perfect feel-good temperature. 
  • TIME SAVINGS: No more waiting to preheat – use a timer so your sauna is ready when you are. 
  • ENERGY EFFICIENCY: The smart control heats only when needed, cutting power consumption and costs. 
  • SAFETY: If something goes wrong, the app alerts you so you can act early. 
  • LONGEVITY: Precise regulation protects the hardware, extending the life of your sauna. 
  • PERSONALIZATION: Set temperature range, humidity, light and music to your taste. 
Shelly Europe

Control small saunas up to 2500 W

Do you have an infrared cabin or a small electric sauna up to 2500 W? Use Shelly Plug S Gen3 to make it smart. The Wi-Fi smart plug with power metering switches devices up to 2500 W – ideal for smaller sauna heaters

To control power remotely or automatically, plug your sauna device into Shelly Plug S Gen3. In the app – or via schedules – you switch the outlet on/off and monitor consumption. If overheating or excessive current is detected, the plug switches off automatically. For temperature control, add the Shelly Plus Add-on with a temperature sensor: based on the measured value, the plug turns on or off to hold your target temperature. 

Shelly Plug S Gen3 in a wall socket; makes small saunas up to 2500 watts smart and remotely controllable

What do you need for high-power sauna heaters? 

Larger saunas for several people often use heaters over 2500 WShelly Plug S Gen3 isn’t sufficient here. Instead, use the Ogemray 25A smart relay, which switches and automates loads up to 25 A / 6000 W

The relay is wired into the sauna’s power line – e.g., at the heater or heating element. Via Wi-Fi and Bluetooth you control the device in the Shelly app. Scenes can automate the heater by switching it on/off. Power metering shows live consumption. Ogemray 25A also adds protection to prevent overload or overheating. 

high-power Ogemray 25A relay safely and efficiently controls powerful sauna heaters

Control a smart sauna with the Shelly App 

With the Shelly App, you can switch your sauna at specific times or regulate temperature and humidity.

Connect your Shelly devices–e.g., the relay for the sauna heater and the Shelly Plus Add-on for sensors–via Wi-Fi and integrate them into your home network. From then on, control your sauna from anywhere. Notifications and status info keep you up to date.

woman sets time control and scenes for the sauna heater in the Shelly app

Temperature monitoring with Shelly Plus Add-on and sensors

Shelly Plus Add-on is a sensor interface with multiple inputs for temperature and humidity sensors. It collects the data and displays it in real time in the app (sensors sold separately). Because a sauna cabin reaches high temperatures, automations keep control safe: if the heater exceeds a threshold, it switches off; or you get a notification when the target temperature is reached so you can start your sauna session right away. 

Placement tip: mount sensors 20–30 cm below the ceiling, but not directly above the heater. Alternatively, place them on the wall opposite the heater, away from vents or cold surfaces. A second sensor at seating height improves accuracy. 

 Recommended product:
Smart sauna control – woman lying in a sauna; condensation on the door; temperature monitoring via Shelly Plus Add-on is active

Scenes and automations for the perfect evening 

Everyone has different preferences,so your ideas for scenes and automations can run free:

 

  • Automatic preheating

    Relaxing in the living room and want the basement sauna in 30 minutes? One tap preheats the cabin. Thanks to the sensor, the app shows in real time when your target temperature is reached.

  • Schedules

    Kick off the weekend every Friday at 8 p.m.? Create a time schedule so preheating starts on time and your preferred temperature is ready at 8.

  • Humidity monitoring

    If 55% is your sweet spot, the system monitors moisture and automatically adjusts ventilation – or doses water for infusions – when needed.

  • Notifications

    You want a max of 10 minutes per round and 70 °C? With lights or speakers in/near the sauna you’ll be alerted if the temperature is too high or the time is up.

  • Safety shutoff

    Dozed off after the last round? Automation turns the sauna off after a maximum operating time to save energy.

Energy efficiency and cost savings with Smart Control

Shelly Smart Control is the latest platform for Shelly devices and offers more features than the classic app. It helps you save energy and costs – even in your sauna. 

The app tracks energy with detailed statistics and a consumption analysis including electricity costs. If use spikes unexpectedly, you’re notified and can act – for instance, cut power to a forgotten ventilation fan remotely. In case of power outage or alarms from nearby water/smoke sensors, you react quickly. 

two women in bathrobes, one with smartphone; energy use and control are monitored in the Shelly Smart Control app

Light control during sauna sessions

Mood lighting makes sessions even more relaxing, in the sauna and outside where you cool down. With smart settings you control light precisely. Using Shelly BLU Door/Window, lights switch on when you enter and turn off when you leave. 

Prefer color effects? Smart LEDs let you adapt light to each phase: warm white to relax, blue to calm, red to activate. Run color-change scenes via app or timer. Or link color to temperature: cool blue at lower temps and warm orange at full heat. Set bright or dim light by mood, even sync with music. 

three lights in a sauna; smart lighting adapts brightness and color to temperature and mood

FAQs:

How can I control the sauna with my phone? 

With a Wi-Fi-or Bluetooth-enabled sauna control and the Shelly app you canoperatethe heater, lighting and more by phone.

How can I retrofit sauna control?

Install temperature sensors and smart switching modules and integrate them into your smart-home system.

What’s the right sauna temperature?

Beginners: 40–60 °C; advanced: 70–100 °C. Above 100 °C only for very experienced users (cardiovascular strain). Monitor with a sensor connected via Shelly Plus Add-on.

What do I need for a smart sauna?

Theselectionof the smart control system should be tailored to the specific sauna. For high-performance heaters, a device such as theOgemray25A isrequired,whereasfor smaller saunas with up to 2,500 watts, a Plug S Gen3 may already be sufficient.