# TFA-Dostmann Etna Black Battery Indoor Outdoor Thermometer Hygrometer

**URL:** https://aio.lv/en/product--tfa-dostmann-35117301--11338754
**Data updated:** 2026-01-06 11:19 (EET)
**Category:** Home Goods Accessories
**Manufacturer:** tfa dostmann
**Manufacturer code:** 35.1173.01
**EAN:** 4009816042071
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 46.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 38.83 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tfa-dostmann-35117301--11338754

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.99 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

The TFA-Dostmann Etna Black Battery is a versatile indoor and outdoor thermometer and hygrometer. It features a trend display for both temperature and humidity. Powered by AAA alkaline batteries, it measures 86mm in width, 30mm in depth, and 145mm in height, making it compact and easy to use.

## Long description

The TFA-Dostmann Etna Black Battery indoor/outdoor thermometer and hygrometer displays essential temperature and humidity information with a clear, minimalist layout. Outdoor and indoor temperature and humidity values appear in the upper display area, while a weather forecast with a trend arrow is shown in the lower-left corner. The unit also provides accurate time and date display, an adjustable time zone, and an alarm with snooze function. The set includes one wireless outdoor temperature and humidity transmitter with a transmission range up to 100 metres; the base station supports up to two additional transmitters. The base station is powered by two AA batteries and the transmitter by two AAA batteries (batteries not included).
Advantages
Compact design that fits on a sideboard or bedside table while showing both indoor and outdoor climate data. Clear trend indicators for temperature and humidity and an integrated clock reduce the need for separate devices. Expandable wireless system allows adding up to two more outdoor transmitters for monitoring multiple locations.
Suitable for (tasks / use cases)
 Monitoring indoor and outdoor temperature and humidity at home
 Bedroom use as a clock and alarm with snooze
 Placement on a sideboard or bedside table for quick climate checks
 Extending monitoring to additional outdoor locations with extra transmitters
Key specifications
 Brand: tfa dostmann
 Model: Etna Black Battery (MPN 35.1173.01, EAN 4009816042071)
 Device type: Indoor/outdoor thermometer and hygrometer with clock
 Power: Base station - 2 × AA batteries (not included); Transmitter - 2 × AAA batteries (not included)
 Transmitter range: up to 100 metres
 Dimensions (approx.): 86 mm width × 30 mm depth × 145 mm height
 Expandable: supports up to three transmitters (one supplied + two additional)
How to use
Insert batteries into the base station (2 × AA) and into the wireless transmitter (2 × AAA). Place the transmitter outside within the stated range and position the base station where the display is easy to read. If needed, set the time and time zone manually on the base station. The device will receive temperature and humidity data from the transmitter and display trend arrows in the lower-left area. Use the alarm and snooze functions as required.
Usage recommendations
The transmitter should be placed in a shaded, well-ventilated outdoor location protected from direct rain and sunlight to ensure accurate readings; keep the distance between base station and transmitter within the specified range for reliable wireless transmission.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.159 kg |
| Battery technology | Alkaline |
| Battery type | AAA |
| Power source | Battery |
| Height | 145 mm |
| Width | 86 mm |
| Depth | 30 mm |
| Backlight display | Yes |
| Product colour | Black |
| Operating frequency | 433 |
| Snooze function | Yes |
| Alarm clock | Yes |
| Manual | Yes |
| Battery voltage | 1.5 V |
| Housing material | Plastic |
| Temperature measurement range (inside) (T-T) | -9.9 - 50 |
| Temperature measurement range (outside) (T-T) | -50 - 70 |
| Number of batteries (sensor) | 2 |
| Number of batteries (receiver) | 2 |
| Humidity measuring range (outside) (H-H) | 10 - 95 |
| Number of sensors supported (max) | 2 |
| Alarm function | Yes |
| Clock function | Yes |
| Clock/Date display | Yes |
| Built-in display | Yes |
| Temperature measurement units | °C |
| Measuring functions | Indoor hygrometer, Indoor thermometer, Outdoor hygrometer, Outdoor thermometer |
| Weather forecast | Yes |
| Outdoor sensors range | 100 m |
| Measuring functions graphic display | Yes |
| Measuring functions trend display | Hygrometer, Thermometer |
| Weather station extremum data | Hygrometer, Thermometer |
| Humidity measuring range (inside) (H-H) | 10 - 95 |
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the TFA-Dostmann Etna Black Battery Thermometer Hygrometer cost, and is it available for purchase?

The price is 46.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 17 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 15.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All tfa dostmann products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized tfa dostmann service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### Where can I download the instructions for TFA-Dostmann Etna Black Battery Thermometer Hygrometer?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11338754/65670526_large.webp