# Weather station TFA 30.3900.02 with indoor/outdoor sensors and wireless transmission

**URL:** https://aio.lv/en/product--tfa-30390002--11677039
**Data updated:** 2026-01-19 07:37 (EET)
**Category:** Weather Station
**Manufacturer:** TFA
**Manufacturer code:** 30.3900.02
**EAN:** 4009816040299
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 22.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 18.59 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tfa-30390002--11677039

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

TFA 30.3900.02 is a compact weather station by TFA offering indoor and outdoor measurements with wireless sensor transmission. It provides key environment data for home or office monitoring, enabling users to track conditions, plan activities and maintain comfort. Easy to place sensors and a clear display make daily use practical.

## Long description

The TFA 30.3900.02 weather station with indoor/outdoor sensors and wireless transmission provides continuous environmental monitoring for home or office use. The compact base unit displays temperature and humidity readings from both the indoor unit and a wireless outdoor sensor, allowing users to compare conditions at a glance. Wireless transmission ensures flexible sensor placement without running cables, while the clear display keeps key measurements visible for everyday decision-making and comfort management.
Advantages
The device combines indoor and outdoor measurement in a single system with reliable wireless data transfer, making installation and relocation straightforward. A compact, easy-to-read display presents current temperature and humidity values so users can quickly assess comfort levels. The included outdoor sensor is designed for straightforward placement outdoors or near windows, and the base unit supports typical home monitoring needs without complex setup.
Suitable for
Monitoring indoor climate in living rooms, bedrooms and home offices
Tracking outdoor conditions on balconies, patios and near windows
Checking temperature and humidity for plant care and pet environments
Comparing indoor and outdoor conditions to plan ventilation and heating
Key specifications
Measurement types: temperature and relative humidity for indoor and outdoor locations
Transmission: wireless connection between sensor and display unit for flexible placement
Display: clear numerical readout of current values for quick reference
Power: battery-operated components for easy mounting without wiring
Design: compact base unit and separate outdoor sensor suitable for wall mounting or free placement
How to use
Place the base display unit in a central indoor location where readings are easily visible. Install batteries in both the display unit and the outdoor sensor according to the manufacturer instructions, then position the outdoor sensor in a sheltered outdoor spot or near a window at the recommended height to avoid direct sunlight and heavy precipitation. Allow the units a brief period to establish the wireless connection and stabilize readings before relying on values for precise decisions.
Usage recommendations
For accurate measurements, avoid placing the outdoor sensor in direct sunlight, under roof drip lines, or adjacent to heating sources. Check and replace batteries periodically, and position the indoor unit away from radiators and direct airflow from HVAC vents to ensure representative indoor climate readings.

## FAQ

### How much does the Weather station TFA 30.3900.02 cost, and is it available for purchase?

The price is 22.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 14 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 02.07.2026 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, Bank cards on-line, Apple Pay, Google Pay. 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 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 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/11677039/66995528_large.webp