# UNI-T UT309A Professional Infrared Thermometer -32°C to 450°C

**URL:** https://aio.lv/en/product--unit-ut309a--12574784
**Data updated:** 2026-07-09 14:55 (EEST)
**Category:** Other goods
**Manufacturer:** Unit
**Manufacturer code:** UT309A
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 85.58 €
**Prices and availability valid until:** 2026-08-08 23:59
**Price without VAT (21%):** 70.73 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--unit-ut309a--12574784

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Wednesday | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

The UNI-T UT309A is a professional infrared thermometer designed for precise non-contact temperature measurement within a range of -32°C to 450°C. Featuring a durable build, this device is ideal for industrial maintenance, HVAC diagnostics, and electrical inspections. It provides accurate readings with a high distance-to-spot ratio, ensuring reliable performance in demanding professional environments.

## Long description

The UNI-T UT309A is a professional infrared thermometer engineered for precise non-contact temperature measurement across a range of -35°C to 450°C. This robust device utilizes infrared energy detection to determine surface temperatures quickly and accurately. Built to withstand harsh industrial environments, it features an IP65 ingress protection rating and is drop-proof up to 3 meters, ensuring long-term reliability for demanding field applications.
Advantages
This thermometer stands out due to its exceptional durability and rapid response time of 250ms, which allows for efficient data collection in fast-paced work settings. The inclusion of multiple scanning modes, such as MAX, MIN, AVG, and DIF, provides users with comprehensive thermal analysis capabilities. Furthermore, the device is equipped with high and low temperature alarms with clear LED indicators, a lock measurement function for continuous monitoring, and a backlit display for visibility in low-light conditions.
Suitable for
Electrical distribution system inspections
HVAC system maintenance and diagnostics
Transportation equipment monitoring
General industrial instrument repair
Surface temperature analysis in manufacturing
This device may not be suitable for measuring the internal temperature of objects, as it is strictly designed for surface temperature detection. It is also not intended for medical use or for measuring the body temperature of humans or animals.
Key specifications
Temperature range: -35°C to 450°C
Distance-to-spot ratio: 10:1
Response time: 250ms
Protection rating: IP65 and 3m drop proof
Emissivity: Fixed at 0.95
Laser: Single laser, Class 2
Power source: 9V battery
How to use
To operate the thermometer, point the sensor toward the target surface and pull the trigger to initiate the measurement. The device will display the temperature on the screen almost instantly. You can toggle between Celsius and Fahrenheit, activate the laser for precise targeting, or use the lock measurement mode for continuous scanning. Utilize the alarm settings to set specific temperature thresholds, which will trigger a visual LED alert if the measured value exceeds or falls below your defined limits.
What to consider before purchase
Ensure the 10:1 distance-to-spot ratio meets your specific measurement distance requirements.
Verify that the fixed emissivity of 0.95 is compatible with the materials you intend to measure.
Confirm that the temperature range of up to 450°C is sufficient for your industrial tasks.
Usage recommendations: For the most accurate readings, ensure the target surface is clean and free of obstructions. When measuring, hold the device steady and maintain a consistent distance from the target. Always store the thermometer in the provided carrying bag when not in use to protect the lens and maintain calibration accuracy.

## FAQ

### How much does the UNI-T UT309A Professional Infrared Thermometer cost, and is it available for purchase?

The price is 85.58 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 Wednesday 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 UNI-T UT309A Professional Infrared Thermometer 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/12574784/68941682_large.webp