# TFA-Dostmann Trinity Indoor/outdoor Temperature & Humidity Sensor Freestanding Wireless

**URL:** https://aio.lv/en/product--tfa-dostmann-30305801--11444803
**Data updated:** 2026-01-06 11:19 (EET)
**Category:** Home Goods Accessories
**Manufacturer:** tfa dostmann
**Manufacturer code:** 30.3058.01
**EAN:** 4009816029638
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The TFA-Dostmann Trinity is a freestanding wireless indoor/outdoor temperature and humidity sensor. It operates on AA batteries and features a compact design with dimensions of 157 mm width, 43 mm depth, and 117 mm height. The package includes a base station, thermo-hygro transmitter, and an instruction manual, making it easy to set up and use.

## Long description

The TFA-Dostmann Trinity is a freestanding wireless indoor/outdoor temperature and humidity sensor that displays indoor climate values and receives remote measurements from a wireless transmitter. The station shows indoor temperature and relative humidity, receives outdoor or remote-room data via the included thermo-hygro transmitter, and presents the current time and weekday in a large format. The compact unit is battery-powered and intended for monitoring living spaces, outbuildings or distant rooms.
Advantages
The wireless connection between station and transmitter enables temperature and humidity monitoring without cabling. The device supports placement of the transmitter outdoors or in another room to compare climates in different locations. A large-time display with weekday and date simplifies daily reference. The set is battery-operated and supplied with a base station, thermo-hygro transmitter and manual for straightforward setup.
Suitable for
Monitoring indoor climate in living rooms and bedrooms
Measuring outdoor temperature and humidity on balconies and patios
Climate control in nurseries, basements and storage rooms
Monitoring conditions in conservatories and small greenhouses
Key specifications
Brand: tfa dostmann
Model / MPN: 30.3058.01
EAN: 4009816029638
Type: Freestanding wireless indoor/outdoor thermo-hygrometer (base station + transmitter)
Power: AA batteries (station and transmitter, batteries not included)
Dimensions (station): 157 × 43 × 117 mm (W × D × H)
How to use
Insert the required AA batteries into both the base station and the wireless thermo-hygro transmitter following the instruction manual. Place the base station indoors on a flat surface and position the transmitter outdoors or in a remote room where measurements are needed. The transmitter sends temperature and humidity values wirelessly to the station; allow a short time for the first transmission and synchronization. Read the large-time display, indoor measurements on the station, and the received remote values to assess conditions and decide on heating or ventilation adjustments.
Usage recommendations
For accurate readings, avoid placing the transmitter in direct sunlight or next to heat sources. Maintain the recommended indoor comfort range of about 18 °C to 22 °C and relative humidity between 40% and 60% to support a healthy living environment and to reduce heating costs.

## Specifications

| Feature | Value |
|---|---|
| Type | Freestanding |
| Display | LCD |
| Weight | 0.214 kg |
| Material | Plastic |
| Battery type | AA |
| Height | 117 mm |
| Sensor type | Temperature & humidity sensor |
| Width | 157 mm |
| Depth | 43 mm |
| Connectivity technology | Wireless |
| Purpose | Indoor/outdoor |
| Operating radius | 80 m |
| Battery voltage | 1.55 V |
| RF transmission frequency | 433 MHz |
| Built-in display | Yes |
| Temperature measurement units | F, °C |
| Packaging content | Base station, thermo-hygro transmitter, instruction manual |
| Temperature measuring range | -40 - 60 |
| Humidity measuring range | 1 - 99 |

## FAQ

### 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 Temperature & Humidity Sensor TFA-Dostmann Trinity?

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/11444803/66155039_large.webp