# Uni-T UT331+ Temperature and Humidity Meter

**URL:** https://aio.lv/en/product--unit-ut331--12478426
**Data updated:** 2026-05-22 07:21 (EEST)
**Category:** Measuring tools
**Manufacturer:** Unit
**Manufacturer code:** UT331+
**EAN:** 6935750533376
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 50.99 €
**Prices and availability valid until:** 2026-07-05 23:59
**Price without VAT (21%):** 42.14 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--unit-ut331--12478426

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

The Uni-T UT331+ is a high-precision digital temperature and humidity meter designed for accurate environmental monitoring. This portable device features a clear display for real-time data tracking, making it ideal for professional use in laboratories, warehouses, offices, and residential spaces. It provides reliable measurements for climate control and quality assurance applications.

## Long description

The Uni-T UT331+ Temperature and Humidity Meter is a high-precision digital instrument designed for accurate environmental monitoring. This portable device provides reliable measurements for temperature and relative humidity, making it an essential tool for professionals working in laboratories, warehouses, offices, and residential environments. With its fast response time and clear digital display, it ensures real-time data tracking for effective climate control and quality assurance.
Advantages
This device stands out due to its high measurement accuracy and the ability to calculate dew point and wet-bulb temperatures, providing a comprehensive overview of air conditions. The inclusion of an offset calibration function allows users to fine-tune readings to meet specific standards, ensuring long-term reliability. Furthermore, the integrated data logging capability, which supports up to 299 sets of measurements, combined with USB connectivity, simplifies the process of transferring and analyzing environmental data on a computer.
Suitable for
Monitoring climate conditions in warehouses and storage facilities
Quality control in laboratories and cleanrooms
Environmental assessment in offices and residential buildings
Technical maintenance and HVAC system inspections
This meter may not be suitable for extreme industrial environments where temperatures exceed the specified range of -20°C to 70°C or where the device might be exposed to corrosive gases or direct liquid immersion. It is designed for air quality monitoring and is not intended for use as a primary safety sensor in hazardous or explosive atmospheres.
Key specifications
Temperature measurement range: -20°C to 70°C
Humidity measurement range: 0% to 99.9% RH
Temperature accuracy: ±0.5°C
Humidity accuracy: ±3% RH (10–90% RH)
Data storage: Up to 299 measurements
Response time: Approximately 1 second
Connectivity: USB interface for data export
Display: Backlit LCD
To use the Uni-T UT331+, insert the provided batteries and power on the device using the dedicated button. Place the sensor in the area you wish to monitor, allowing a moment for the reading to stabilize on the display. You can toggle between Celsius and Fahrenheit units as needed. To record data, utilize the automatic logging function or manually save readings to the internal memory. For detailed analysis, connect the meter to a computer via the USB cable to export the stored data sets.
What to consider before purchase
Verify that the operating temperature and humidity ranges meet your specific application requirements.
Ensure that the device is compatible with your computer's operating system if you intend to use the data export feature.
Consider the need for periodic calibration to maintain measurement precision over time.
For optimal performance, keep the sensor area clean and free from dust or debris. Avoid exposing the device to rapid temperature fluctuations, and ensure the batteries are removed if the meter will not be used for an extended period to prevent leakage.

## FAQ

### How much does the Uni-T UT331+ Temperature and Humidity Meter cost, and is it available for purchase?

The price is 50.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 80 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 29.06.2026 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 Unit 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 Unit 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/12478426/68799347_large.webp