# Clamp Meter Unit UT278A+ — digital clamp multimeter for AC/DC current and voltage measurement

**URL:** https://aio.lv/en/product--unit-lec-mie0477--11343750
**Data updated:** 2026-04-26 18:25 (EEST)
**Category:** Measuring tools
**Manufacturer:** Unit
**Manufacturer code:** LEC-MIE0477
**EAN:** 5901890091084
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 368.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 304.54 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--unit-lec-mie0477--11343750

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.89 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

The Unit UT278A+ clamp meter is a digital multimeter designed for non-contact AC/DC current and voltage measurement using clamp jaws. It provides safe hands-free current reading, basic multimeter functions and is suitable for electricians, HVAC technicians and maintenance work for troubleshooting electrical circuits and systems.

## Long description

The Unit UT278A+ clamp meter is a digital clamp multimeter designed for non-contact measurement of AC and DC current and for basic voltage checks. Its clamp jaws enable hands-free current reading on conductors without disconnecting circuits, while the multimeter functions allow quick verification of voltage presence and continuity during troubleshooting. The compact, handheld design and intuitive controls make the clamp meter suitable for fieldwork and maintenance tasks where rapid current measurement and safe handling are required.
Advantages
The Unit UT278A+ provides quick non-contact current measurement via its clamp jaws, reducing the need to interrupt circuits. It combines clamp-style current sensing with standard multimeter functions for voltage and basic diagnostic checks. The instrument is engineered for safe operation around live conductors and to speed up common electrical tasks by delivering straightforward readings on a clear display.
Suitable for
 Electricians performing circuit diagnostics and load checks
 HVAC technicians measuring current draw of motors and compressors
 Maintenance personnel monitoring machinery and electrical panels
 Troubleshooting intermittent faults where non-contact current measurement is needed
When it may not be suitable
The clamp meter is intended for basic to intermediate electrical measurements; it may not be suitable where advanced features such as high-precision low-current measurement, extensive logging, or advanced waveform analysis are required. For applications demanding laboratory-grade accuracy, detailed harmonic analysis, or recording over long periods, a specialized power analyzer or high-end multimeter would be more appropriate.
Key specifications
 Measurement functions: AC current (clamp), DC current (if supported by model clamp), AC/DC voltage, continuity checks
 Clamp jaws: designed for single conductor measurements without disconnection
 Display: digital readout for clear numeric values
 Form factor: compact handheld with ergonomic grip for field use
 Safety: built for safe operation on live conductors (observe applicable safety ratings and procedures)
How to use
To measure current, open the clamp jaws and place a single conductor centrally inside the jaws, then read the current value on the display. For voltage checks, use the meter leads (where provided) and follow the correct probe polarity and safety precautions. Use the function selector to choose the desired measurement mode, and ensure the correct range or autorange feature is set before taking readings. Always follow standard electrical safety practices: wear protective equipment, de-energize circuits when possible, and confirm safe working conditions before contacting live parts.
What to consider before purchase
 Required measurement ranges for current and voltage in your typical tasks
 Need for DC current measurement versus AC-only clamp capability
 Desired accuracy and whether advanced features (logging, inrush, waveform) are necessary
 Compliance with relevant safety standards and suitability for the working environment
Usage recommendations
Use the Unit UT278A+ clamp meter for quick on-site current checks and routine voltage verification. Position the conductor centrally in the jaws for best accuracy, avoid measuring multiple conductors simultaneously, and verify meter condition and batteries before critical measurements.

## FAQ

### How much does the Clamp Meter Unit UT278A+ cost, and is it available for purchase?

The price is 368.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 45 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 07.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Clamp Meter Unit UT278A+ 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/11343750/68579923_large.webp