# Solar Irradiance Meter Unit UT381PV with Bluetooth, measuring up to 1400W/m², temperature range -40 to 120°C, and IP65 rating

**URL:** https://aio.lv/en/product--unit-ut381pv--12622615
**Data updated:** 2026-08-13 04:17 (EEST)
**Category:** Measuring tools
**Manufacturer:** Unit
**Manufacturer code:** UT381PV
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 315.00 €
**Prices and availability valid until:** 2026-10-13 23:59
**Price without VAT (21%):** 260.33 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--unit-ut381pv--12622615

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Thursday | free |
| Pickup points | 22.09.2026 | 1.99 EUR |
| Courier delivery to door | 22.09.2026 | 4.99 EUR |

## Summary description

Solar irradiance meter Unit UT381PV designed for professional photovoltaic system measurements. Features a measuring range up to 1400W/m², temperature monitoring from -40 to 120°C, angle measurement from -90.0 to +90.0° and 0 to 360°, Bluetooth connectivity, and a durable IP65 enclosure. Ideal for assessing solar panel efficiency, tilt angles, and environmental conditions during installation and maintenance of solar energy systems.

## Long description

The Solar Irradiance Meter Unit UT381PV with Bluetooth is a professional measuring instrument designed specifically for photovoltaic system assessment, installation, and maintenance. This device accurately measures solar irradiance up to 1400W/m², monitors ambient and surface temperatures across a wide range, and determines precise installation angles to help maximize solar panel efficiency. Equipped with wireless connectivity and a rugged weather-resistant enclosure, it serves as an essential tool for technicians and engineers working with solar energy systems.
Advantages
This solar irradiance meter offers high-precision measurements that ensure reliable data collection for photovoltaic system planning and performance evaluation. Its integrated temperature monitoring capabilities allow users to assess thermal conditions that directly impact solar panel output. The inclusion of angle measurement functions simplifies the process of optimizing tilt and orientation for maximum energy capture. Furthermore, built-in Bluetooth connectivity enables seamless data transfer to mobile devices for real-time analysis and reporting, while the durable IP65-rated housing provides robust protection against dust and water jets in demanding outdoor environments.
Suitable for
Measuring solar irradiance levels during photovoltaic system installation
Assessing solar panel efficiency and performance output
Determining optimal tilt and orientation angles for solar panels
Monitoring environmental and surface temperatures in solar energy projects
Conducting routine maintenance checks on commercial and residential solar arrays
When it may not be suitable
This device is specifically tailored for photovoltaic and solar energy applications and may not be suitable for general meteorological research requiring continuous long-term weather station logging without human supervision. It is also not designed for high-temperature industrial processes that exceed the maximum operating limits of its temperature sensors.
Key specifications
Measuring range up to 1400W/m² for solar irradiance
Temperature measurement range from -40 to 120°C
Tilt angle measurement range from -90.0 to +90.0° and 0 to 360°
Bluetooth connectivity for wireless data transfer
IP65 rated dustproof and water-resistant enclosure
How to use
To begin measuring, power on the device and select the desired mode for irradiance, temperature, or angle measurement. Position the meter parallel to the solar panel surface or at the target location to capture accurate solar radiation data. Utilize the angle measurement feature to verify the tilt and orientation of the installation. Review the readings directly on the display screen or connect via Bluetooth to a compatible mobile device for data logging and analysis. Ensure the sensor surface remains clean and free from obstructions during use to maintain measurement accuracy.
What to consider before purchase
Verify that the measurement ranges for irradiance and temperature align with your specific project requirements
Ensure compatibility of the Bluetooth feature with your existing mobile devices or data collection software
Evaluate the operating environment to confirm that the IP65 rating adequately meets your outdoor weather protection needs
For optimal performance and longevity, keep the sensor window clean and store the device in a dry environment within its specified storage temperature limits when not in use.

## FAQ

### How much does the Solar Irradiance Meter Unit UT381PV cost, and is it available for purchase?

The price is 315.00 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 Thursday 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, Installment. All transactions are 100% secure and encrypted.

### Can Solar Irradiance Meter Unit UT381PV be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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/12622615/69298869_large.webp