# Hygrometer/Psychrometer TFA Dostmann 30.5058.02 — Indoor Electronic Hygrometer, Digital, Battery-powered (AAA)

**URL:** https://aio.lv/en/product--tfa-dostmann-30505802--12377640
**Data updated:** 2026-04-23 13:21 (EEST)
**Category:** Home Goods Accessories
**Manufacturer:** tfa dostmann
**Manufacturer code:** 30.5058.02
**EAN:** 4009816041470
**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-30505802--12377640

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

TFA-Dostmann 30.5058.02 is an indoor electronic hygrometer/psychrometer with a rectangular digital display for monitoring relative humidity and ambient conditions. Battery-powered (1.5 V AAA) device designed for home use; compact and easy to place on shelves or tables. Useful for monitoring indoor climate in living rooms, bedrooms, offices and storage areas.

## Long description

The TFA Dostmann 30.5058.02 is an indoor electronic hygrometer and psychrometer designed to monitor room temperature and relative humidity. The compact, battery-powered device features a rectangular digital display that shows current measurements, time, and date. It records maximum and minimum values over a selectable period and includes an alarm and an optional hourly chime for regular reminders. The hygrometer is suitable for placement on shelves, tables, or other flat surfaces in living rooms, bedrooms, offices and storage areas.
Advantages
This digital thermo-hygrometer provides straightforward monitoring of indoor climate with a clear digital readout for temperature and relative humidity. The max–min memory lets you review extremes over a chosen timeframe, while the time/date display and wake-up alarm add basic clock functions. Battery power (1.5 V AAA) and a compact form factor make the unit easy to position where you need it.
Suitable for
Monitoring humidity and temperature in living rooms and bedrooms
Use in home offices and workspaces
Climate checks in storage areas, cabinets or wine racks
General indoor air quality awareness and heating/ventilation adjustments
When it may not be suitable
The device is intended for indoor use only and is not suitable for outdoor exposure or harsh environments with direct water contact. It provides basic monitoring functions and may not meet requirements for laboratory-grade precision or specialised industrial monitoring.
Key specifications
Measured values: air temperature and relative humidity
Display: rectangular digital screen with time and date
Memory: maximum and minimum value recall over selectable period
Power supply: 1.5 V AAA battery
Functions: alarm (wake-up) and switchable hourly chime
Mounting: freestanding placement on shelves or tables
How to use
Insert a 1.5 V AAA battery, place the hygrometer on a stable surface away from direct heat sources or drafts, and let it stabilise for accurate readings. Use the controls to view current temperature and humidity, recall maximum and minimum values, set the time and date, and configure the alarm or hourly chime as needed. Regularly check and replace the battery to maintain continuous operation.
What to consider before purchase
Intended use: indoor monitoring only, not waterproof or weatherproof
Accuracy needs: suitable for home and office use but not for laboratory-level precision
Power: requires a 1.5 V AAA battery (not included)
Placement: perform best when placed away from direct sunlight, heaters, and drafts
Usage recommendations
Position the TFA Dostmann hygrometer at breathing height in the room and allow 30 minutes for readings to stabilise; use its max–min memory to track daily variations and adjust heating or ventilation accordingly.

## Specifications

| Feature | Value |
|---|---|
| Type | Electronic hygrometer |
| Weight | 0.087 kg |
| Battery type | AAA |
| Number of batteries supported | 1 |
| Power source | Battery |
| Height | 98 mm |
| Width | 22 mm |
| Depth | 95 mm |
| Product colour | White |
| Purpose | Indoor |
| Battery voltage | 1.5 V |
| Housing material | Plastic |
| Temperature measurement range | -10 - 50 |
| Thermometer | Yes |
| Placement | Table, Wall |
| Display type | Digital |
| Temperature measurement range | 14 - 122 |
| Display form factor | Rectangular |
| Quantity per pack | 1 pc(s) |
| Humidity measuring range | 10 - 99 |

## FAQ

### How much does the TFA Dostmann 30.5058.02 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 — 9 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 07.07.2026 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/12377640/68497204_large.webp