Lifetime Warranty See details
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Functions: thermometer, hygrometer. With a detachable wired thermoprobe with a 3m (10ft) cable and magnetic back

Indoors
Usage location
Thermometer, hygrometer
Data and parameters measured by the device
Digital, wall mounted, tabletop
Design of the measuring device

Product ID 81387
Brand Levenhuk, Inc., USA
Warranty lifetime
EAN 5905555016368
Package size (LxWxH) 3.9x3.5x2 in
Shipping Weight 0.4 lb
Description

The Levenhuk Wezzer SN20 thermometer is a gadget designed specifically to track temperature changes in the sauna. It has a detachable wired thermoprobe with the cable and, therefore, it can measure temperature in two places simultaneously. The device is highly accurate, durable, and reliable. It is powered by standard batteries.

The sauna thermometer has a screen that shows the temperature readings that are transmitted from the thermoprobe and the minimum and maximum values. The main unit can also measure air humidity. The screen has a backlight, which can be used in low ambient light.

It is recommended to place the device as follows. The main unit must not be located inside the steam room. Otherwise, the electronic components will be damaged. It can be placed on a fold-out table stand or attached to a metal surface with a magnetic back. The thermoprobe must be installed inside the steam room, usually slightly above the floor.

Key features:

  • Sauna thermometer with magnetic back
  • The main unit measures temperature and humidity
  • The thermoprobe with the cable measures the temperature
  • Limit values record
  • Powered by standard batteries

The kit includes:

  • Sauna thermometer
  • Thermoprobe with a cable
  • User manual and warranty card
Specifications
Product ID 81387
Brand Levenhuk, Inc., USA
Warranty lifetime
EAN 5905555016368
Package size (LxWxH) 3.9x3.5x2 in
Shipping Weight 0.4 lb
Usage location indoors
Type thermometer
Built-in features thermometer, hygrometer
Design digital, wall mounted, tabletop
Application for home use
Hygrometer (air humidity)
Units of measurement % (RH)
Measuring range 10% to 99%
Thermometer (temperature)
Units of measurement °C, °F
Special features maximum and minimum values display
General specifications
Screen type monochrome
Number of screens 1
Number of screens 1
Power supply AAA batteries – 2 pcs. (not included)
Body plastic
Lighting is available
Illumination yes
Additional a magnetic back, a wired thermoprobe with a 3m (10ft) cable
Video
Questions and Answers
Levi (2026.02.05)
Do you sell a cord extension? Would like to mount it in the sauna and extend the unit into the house (75 feet) to monitor the temperature from inside.
Customer service:
Dear Levi, hello!

Thank you for your query.

We do not offer separate cord extensions. Levenhuk Wezzer SN20 Sauna Thermometer has a 10ft cable.

Have a nice day!
Michael (2025.12.19)
Would like to use this unit to have a sensor in the sauna and the display in the house. Is there a probe with a wire that is 50+ feet?
Customer service:
Dear Michael, hello!

Thank you for your query.

The Levenhuk Wezzer SN20 is supplied with a wired thermoprobe featuring a 3 m (10 ft) cable. We do not offer a device with 50+ feet wire.

Let me know if I can help you with anything else!
Doug (2025.10.17)
Do you think this can be used to measure temperature and humidity inside a solar powered food dryer (max temp @165F)? Does the probe have to be standing in the air? What happens if it is touching metal? I will need to keep display outside and it seems that I just need to put it inside a box/plastic bag, etc, to protect from weather, correct? FYI, I will need to buy 26 of them for an NGO in Nepal.
Customer service:
Dear Doug, hello!

At an operating temperature of approximately 74°C (165°F), there will be no problems, as the maximum operating temperature of the SN20 remote sensor is 150°C.

The sensor should be placed in the air rather than in direct contact with metal surfaces. If the sensor comes into contact with metal, however, the temperature readings will be inaccurate, since the sensor will measure the temperature of the metal rather than the air.
Placing the display in a protective box or plastic bag is acceptable.

Therefore, there are no contraindications to using the SN20 in a dryer.
John (2024.01.08)
I have an outdoor barrell Sauna. I understand the panel cant be inside the sauna. Can the panel be outside in the elements (e.g., 100 degree heat in summer, rain, snow etc.)? I dont have a covered changing area, wondering about outdoor durability
Customer service:
Hi John,


thank you for your query.

The device will withstand temperatures from -40 to +70, but it has no protection; the product is intended for indoor use. It is not recommended to leave it in the rain/snow. You can make some kind of temporary shelter for the device while you are in the sauna, and then immediately remove it.

Please let us know if you have any questions.
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