# Hygrometer / Psychrometer TFA Dostmann 30.5057.02 — Indoor electronic hygrometer, battery-powered, silver/white

**URL:** https://aio.lv/en/product--tfa-dostmann-30505702--12377634
**Data updated:** 2026-04-23 13:21 (EEST)
**Category:** Home Goods Accessories
**Manufacturer:** tfa dostmann
**Manufacturer code:** 30.5057.02
**EAN:** 4009816040817
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 30.99 €
**Prices and availability valid until:** 2026-07-05 23:59
**Price without VAT (21%):** 25.61 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tfa-dostmann-30505702--12377634

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

TFA-Dostmann 30.5057.02 is an indoor electronic hygrometer/psychrometer designed to measure relative humidity and ambient conditions. Battery-powered and supplied as a single unit, it features a compact vertical housing in silver and white. Suitable for home, office or storage monitoring where humidity tracking is needed to protect comfort, plants or sensitive materials.

## Long description

The TFA Dostmann 30.5057.02 digital thermo-hygrometer measures indoor temperature and relative humidity to help maintain a healthy indoor climate. Housed in a compact silver-and-white vertical case, the battery-powered device displays current values, time, and stored maximum and minimum readings for temperature and humidity. It can be placed on a table using the integrated stand or mounted on a wall using the hanging loop.
Advantages
The instrument provides continuous measurement of ambient temperature and relative humidity and stores maximum and minimum values for easy monitoring. A comfort zone indicator helps you keep conditions within recommended ranges, and the built-in clock adds practical information. The unit’s compact design and dual mounting options make it simple to position in living rooms, cellars, music rooms, or storage areas.
Suitable for
Monitoring home rooms (living room, bedroom)
Protecting musical instruments and electronics in a music room
Checking humidity in cellars and storage areas
Indoor plant care
When it may not be suitable
This device is intended for indoor ambient monitoring and is not designed for outdoor use or for measuring extremely high-precision laboratory conditions. If you require calibrated or certified measurements for professional laboratory, industrial process control, or outdoor weather monitoring, choose a specialized instrument.
Key specifications
Measured parameters: ambient temperature and relative humidity
Display: current values, stored maximum and minimum values, comfort zone indicator, time
Power: battery-powered (batteries supplied/not supplied as per packaging)
Housing: compact vertical design, silver and white
Mounting: table stand and hanging loop for wall mounting
How to use
Install batteries, set the current time if required, and place the thermo-hygrometer in a representative location away from direct heat sources, drafts, or windows. Use the stand for tabletop placement or the hanging loop for wall mounting. Read current temperature and humidity from the display and consult the stored maximum and minimum values when checking fluctuations. Use the comfort zone indicator to assess whether ventilation or heating adjustments are needed.
What to consider before purchase
Intended location: indoor use only
Required accuracy: suitable for home and storage monitoring, not laboratory-grade
Mounting preference: table or wall placement
Visibility needs: compact vertical display
Usage recommendations
Place the device at least 1–1.5 m above the floor and away from direct sunlight or heating elements for representative readings; check stored max/min values regularly to detect trends and adjust ventilation or heating accordingly.

## Specifications

| Feature | Value |
|---|---|
| Type | Electronic hygrometer |
| Weight | 0.081 kg |
| Power source | Battery |
| Height | 120 mm |
| Width | 16 mm |
| Depth | 72 mm |
| Product colour | White, Silver |
| Purpose | Indoor |
| Housing material | Plastic |
| Temperature measurement range | -10 - 60 |
| Thermometer | Yes |
| Placement | Wall, Desk |
| Temperature measurement units | °C |
| Quantity per pack | 1 pc(s) |
| Humidity measuring range | 10 - 99 |

## FAQ

### How much does the TFA Dostmann 30.5057.02 Indoor Electronic Hygrometer cost, and is it available for purchase?

The price is 30.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 47 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 08.07.2026 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

## Image

https://aio.lv/img/cache/product/12377634/68497216_large.webp