# Uni-T LM40Mi Laser Distance Meter

**URL:** https://aio.lv/en/product--unit-lm40mi--12478452
**Data updated:** 2026-05-22 07:20 (EEST)
**Category:** Measuring tools
**Manufacturer:** Unit
**Manufacturer code:** LM40Mi
**EAN:** 6935750540855
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.49 €
**Prices and availability valid until:** 2026-07-08 23:59
**Price without VAT (21%):** 24.37 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--unit-lm40mi--12478452

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.06.2026 | free |
| Pickup points | 29.06.2026 | 1.99 EUR |
| Courier delivery to door | 29.06.2026 | 4.99 EUR |

## Summary description

The Uni-T LM40Mi is a professional laser distance meter designed for precise measurement of distances, areas, and volumes. This compact and reliable tool is ideal for construction, interior design, and engineering applications. It features an intuitive interface for quick data acquisition, ensuring high accuracy and efficiency for various professional and DIY measurement tasks in indoor environments.

## Long description

The Uni-T LM40Mi Laser Distance Meter is a professional-grade measurement tool engineered for high precision in distance, area, and volume calculations. Designed with portability and efficiency in mind, this compact device serves as an essential instrument for construction professionals, interior designers, and DIY enthusiasts who require reliable data acquisition in indoor environments. Its robust construction and intuitive interface ensure that complex measurements are performed quickly and accurately, streamlining workflows for various technical projects.
Advantages
The primary benefit of the Uni-T LM40Mi lies in its combination of high-accuracy laser technology and a durable, lightweight metal housing that withstands daily use. The device offers versatile measurement modes, including continuous tracking, area, volume, and Pythagorean calculations, which significantly reduce the time spent on manual estimations. With a rechargeable lithium-ion battery and convenient USB Type-C charging, the meter provides long-lasting performance and eliminates the need for frequent battery replacements. The backlit display ensures excellent visibility in various lighting conditions, while the self-calibration feature maintains consistent measurement reliability over time.
Suitable for
Measuring room dimensions for interior design and renovation planning
Calculating floor areas and wall volumes for material estimation
Quick distance checks on construction sites
DIY home improvement and furniture installation projects
Technical engineering and architectural site surveys
When it may not be suitable
This device is optimized for indoor use and may experience reduced accuracy or difficulty in detecting the laser point when used in direct, bright sunlight or over very long distances outdoors. It is not intended for high-precision industrial surveying that requires specialized optical equipment.
Key specifications
Measurement range: 0.05 m to 40 m
Accuracy: ±(2.0 mm + 5 \* 10^-5 D)
Measurement units: meters, inches, feet
Laser class: Class II (630–670 nm, \<1 mW)
Power supply: 3.7V 370 mAh Li-ion battery
Charging interface: USB Type-C
Dimensions: 86.5 x 36.5 x 19.5 mm
Weight: 75 g
How to use
To begin using the Uni-T LM40Mi, ensure the device is fully charged via the USB Type-C port. Power on the unit and select the desired measurement mode using the interface buttons. Point the laser at the target surface and press the measurement button to capture the distance. For area or volume calculations, follow the on-screen prompts to measure the required sides sequentially. The device will automatically calculate the final result based on the inputs provided. Always ensure the laser path is unobstructed to maintain measurement accuracy.
What to consider before purchase
Verify that the 40-meter range is sufficient for your typical work environment.
Confirm that the indoor-focused laser intensity meets your specific project requirements.
Consider the compact size if you prioritize portability for frequent site visits.
Usage recommendations: To ensure the longevity of the device, store it within the specified temperature and humidity ranges. Always keep the laser aperture clean and free of dust or debris to maintain maximum measurement precision.

## FAQ

### How much does the Uni-T LM40Mi Laser Distance Meter cost, and is it available for purchase?

The price is 29.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 40 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 22.06.2026 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/12478452/68799386_large.webp