# UNI-T A25D Air Quality Monitor for PM2.5, Temperature and Humidity

**URL:** https://aio.lv/en/product--unit-a25d--12478120
**Data updated:** 2026-05-22 07:21 (EEST)
**Category:** Other goods
**Manufacturer:** Unit
**Manufacturer code:** A25D
**EAN:** 6935750525050
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 46.99 €
**Prices and availability valid until:** 2026-12-06 23:59
**Price without VAT (21%):** 38.83 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--unit-a25d--12478120

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.11.2026 | free |
| Pickup points | 26.11.2026 | 1.99 EUR |
| Courier delivery to door | 26.11.2026 | 4.99 EUR |

## Summary description

The UNI-T A25D is a portable air quality monitor designed to measure PM2.5 concentrations from 0 to 500 ug/m³, ambient temperature from -10 to 50°C, and relative humidity from 5% to 99%. Equipped with a 1500mAh rechargeable battery, this device provides real-time environmental monitoring for homes, offices, and indoor spaces to ensure a healthy living environment.

## Long description

The UNI-T A25D is a compact and portable air quality monitor engineered to provide precise, real-time data on indoor environmental conditions. This device is specifically designed to track fine particulate matter concentrations, ambient temperature, and relative humidity, helping users maintain a healthy and comfortable indoor climate. With its integrated high-capacity battery and intuitive interface, it serves as a reliable tool for continuous monitoring in various indoor settings.
Advantages
The primary benefit of the UNI-T A25D is its ability to deliver immediate feedback on air quality, allowing for proactive adjustments to ventilation or air purification systems. Its portable design ensures that it can be easily moved between rooms or locations, while the rechargeable battery eliminates the need for constant power connection. The device combines three essential environmental sensors into one streamlined unit, providing a comprehensive overview of your living or working space without the complexity of multiple separate instruments.
Suitable for
Monitoring air quality in residential bedrooms and living areas
Checking particulate levels in office environments
Assessing indoor climate conditions in schools or public buildings
Verifying the effectiveness of air purifiers and ventilation systems
When it may not be suitable
This device is intended for indoor use only and is not designed for outdoor environmental monitoring or industrial-grade air quality testing. It does not detect gases such as carbon monoxide, carbon dioxide, or volatile organic compounds, and should not be used as a safety alarm for hazardous gas leaks.
Key specifications
PM2.5 measurement range: 0 to 500 ug/m³
Temperature measurement range: -10°C to 50°C
Relative humidity measurement range: 5% to 99%
Battery capacity: 1500mAh rechargeable
Display type: Digital real-time readout
How to use
To begin using the monitor, ensure the device is fully charged using the provided cable. Once powered on, place the unit in a stable, well-ventilated area away from direct heat sources or drafts to ensure accurate sensor readings. The display will automatically update to show current PM2.5 levels, temperature, and humidity. Allow the sensors a few moments to stabilize when moving the device to a new environment.
What to consider before purchase
Verify that the measurement ranges meet your specific monitoring requirements
Ensure the device is kept away from high-moisture areas to protect the internal sensors
Note that this device is designed for monitoring purposes and is not a medical-grade diagnostic tool
Usage recommendations
For the most accurate results, avoid placing the monitor directly in front of air vents or near open windows, as this may cause fluctuating readings. Regularly clean the exterior of the device with a dry cloth and ensure the air intake vents remain unobstructed to maintain optimal sensor performance.

## FAQ

### How much does the UNI-T A25D Air Quality Monitor PM2.5 cost, and is it available for purchase?

The price is 46.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 66 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 23.11.2026 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/12478120/69823609_large.webp