# F&F DMV-3T 3-Phase Digital Modular Voltmeter TrueRMS 100-300V AC 0.5% Accuracy

**URL:** https://aio.lv/en/product--ff-dmv-3t--12454519
**Data updated:** 2026-05-18 02:49 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** FF
**Manufacturer code:** DMV-3T
**EAN:** 5908312591979
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 104.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 86.77 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-dmv-3t--12454519

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

The F&F DMV-3T is a modular 3-phase digital voltmeter designed for precise voltage monitoring in AC power networks. Featuring TrueRMS measurement technology, it operates within a range of 100-300V AC with an accuracy of 0.5%. This compact device is intended for DIN-rail mounting, providing reliable real-time voltage data for industrial and residential electrical distribution systems.

## Long description

The F&F DMV-3T is a high-precision 3-phase digital modular voltmeter engineered for continuous voltage monitoring in AC electrical networks. Utilizing advanced TrueRMS measurement technology, this device ensures accurate readings even in environments with non-sinusoidal waveforms. Designed for seamless integration into electrical distribution panels, it provides real-time data on voltage levels across three phases, supporting both industrial and residential infrastructure requirements.
Advantages
The primary benefit of the DMV-3T is its high measurement accuracy of 0.5%, which allows for precise monitoring of power quality. The TrueRMS technology ensures that the voltmeter provides reliable results regardless of the signal shape, making it superior to standard average-responding meters. Its modular design and DIN-rail mounting capability facilitate quick and space-efficient installation in standard distribution boards. The clear digital display offers immediate visibility of voltage parameters, enabling rapid diagnostics and maintenance of electrical systems.
Suitable for
Monitoring voltage in 3-phase industrial power networks
Residential electrical distribution board management
Verification of power supply stability for sensitive equipment
Preventive maintenance and diagnostics of electrical installations
When it may not be suitable
This device is specifically calibrated for a voltage range of 100-300V AC and is not suitable for monitoring systems operating outside these parameters, such as high-voltage industrial grids or low-voltage DC circuits. It is intended for indoor use within standard electrical enclosures and should not be exposed to harsh outdoor environmental conditions without appropriate protection.
Key specifications
Measurement type: TrueRMS
Voltage range: 100-300V AC
Accuracy: 0.5%
Mounting: DIN-rail (TH35)
Phase configuration: 3-phase
How to use
The voltmeter is designed for installation on a standard TH35 DIN-rail within an electrical distribution cabinet. Connection should be performed by a qualified electrician in accordance with local electrical safety regulations. The input terminals must be connected to the respective phases of the AC network. Once powered, the device automatically initiates measurement and displays the voltage values for each phase on the integrated digital screen, requiring no further calibration or manual intervention for standard operation.
What to consider before purchase
Ensure your network voltage falls within the 100-300V AC range
Verify available space on the DIN-rail in your distribution board
Confirm that the installation environment meets the required safety standards for electrical equipment
Usage recommendations
Regularly inspect the display and connections during routine maintenance to ensure the device remains securely mounted and that the electrical contacts are free from oxidation or loose wiring.

## FAQ

### How much does the F&F DMV-3T 3-Phase Digital Modular Voltmeter cost, and is it available for purchase?

The price is 104.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 03.07.2026 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 F&F DMV-3T 3-Phase Digital Modular Voltmeter 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 FF 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 FF 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/12454519/68756945_large.webp