Harvia
HARVIA Thermo-Hygrometer SAS92300, Alder | Dual Sauna Thermometer & Hygrometer
HARVIA Thermo-Hygrometer SAS92300, Alder | Dual Sauna Thermometer & Hygrometer
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The Harvia SAS92300 Thermo-Hygrometer (Alder) is a reliable, dual-function instrument for monitoring the sauna climate at a glance. Combining a precision thermometer (0–120°C) and hygrometer (0–100%) in a single elegant unit, it lets you track both temperature and humidity simultaneously — essential for safe, comfortable, and consistent sauna sessions.
The body is crafted from natural alder wood, which is resistant to high heat and moisture and harmonises beautifully with any sauna interior. The mechanical analogue system requires no power supply — simply mount it on the wall and it's ready to use immediately.
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Technical Specifications
- Model: SAS92300
- Body Material: Natural alder wood
- Dimensions: 225×140mm
- Temperature Range: 0–120°C
- Humidity Range: 0–100%
- Display: Two separate analogue dials
- System: Mechanical — no power supply required
- Manufacturer: Harvia, Finland
Key Advantages
- 🌡️ Dual monitoring — temperature and humidity on one device
- 🌿 Natural alder body — moisture and heat resistant; suits any sauna aesthetic
- 🔋 No power required — fully mechanical; reliable in any conditions
- 📐 Minimalist Scandinavian design — suits both classic and modern sauna interiors
- ✅ Harvia quality — trusted Finnish sauna brand with decades of heritage
How to Use
- Mount on the sauna wall in a spot protected from direct steam and heater heat.
- Read temperature and humidity on the two separate dials.
- Adjust ventilation or water pouring to maintain your preferred sauna climate.
Where should I mount the thermo-hygrometer in the sauna?
Mount it on the sauna wall at eye level when seated, away from direct steam spray and the heater. Avoid positioning directly above the heater or where water could splash on it.
Does this device need batteries or a power supply?
No — the SAS92300 uses a fully mechanical analogue system that requires no batteries or electrical connection. It works immediately upon installation.
Is alder wood safe for sauna use?
Yes — alder is a classic sauna wood. It is resin-free, heat-resistant, and moisture-stable, making it ideal for prolonged use in high-temperature, high-humidity environments.
What is the optimal sauna temperature and humidity?
For a traditional Finnish sauna, the ideal range is 70–90°C with 10–30% humidity. For a softer steam experience, aim for lower temperature with higher humidity. The SAS92300 helps you find and maintain your perfect balance.
We offer free standard delivery on all UK mainland orders. Orders are typically dispatched within 1–3 business days. For full details please visit our Delivery Policy and Returns Policy pages.
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