# Huawei DTSU666-FE 3-Phase Fast Ethernet Smart Power Meter

**URL:** https://aio.lv/en/product--oem-dtsu666-fe--10794505
**Data updated:** 2026-06-25 19:49 (EEST)
**Category:** Solar Panel Accessories
**Manufacturer:** OEM
**Manufacturer code:** DTSU666-FE
**EAN:** 8058776756166
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 220.49 €
**Prices and availability valid until:** 2026-08-12 23:59
**Price without VAT (21%):** 182.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--oem-dtsu666-fe--10794505

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The Huawei DTSU666-FE is a high-precision 3-phase smart power meter designed for energy monitoring in solar PV systems. Featuring a Fast Ethernet interface, it ensures reliable and rapid data transmission for real-time energy management. This meter is essential for optimizing self-consumption and monitoring grid interaction, providing accurate measurements for residential and commercial solar installations.

## Long description

The Huawei DTSU666-FE is a high-precision 3-phase smart power meter engineered specifically for comprehensive energy monitoring within solar photovoltaic systems. By integrating a Fast Ethernet interface, this device facilitates rapid and stable data transmission, allowing for seamless communication with your solar inverter and energy management system. It serves as a critical component for users aiming to track energy production, consumption, and grid interaction with high accuracy.
Advantages
This smart power meter offers exceptional measurement precision, ensuring that all energy data is captured reliably for effective system analysis. The inclusion of a Fast Ethernet port significantly enhances connectivity speed compared to standard serial connections, providing near real-time updates on energy flows. Its robust design is optimized for both residential and commercial solar installations, supporting complex 3-phase electrical environments while maintaining a compact footprint for easy integration into existing distribution boards.
Suitable for
Residential solar PV systems with 3-phase power supply
Commercial solar energy monitoring installations
Optimizing self-consumption of generated solar power
Real-time grid interaction and export monitoring
When it may not be suitable
This device is designed specifically for 3-phase electrical systems and is not compatible with single-phase residential setups. Furthermore, it requires a stable Ethernet network connection to function as intended, making it less suitable for locations where wired network infrastructure is unavailable or difficult to install.
Key specifications
Phase type: 3-phase
Communication interface: Fast Ethernet
Application: Solar PV energy monitoring
Measurement accuracy: High-precision
How to use
The Huawei DTSU666-FE should be installed by a qualified electrician within the main distribution board of the property. It must be connected in line with the electrical supply to monitor the energy flow between the grid, the solar inverter, and the household loads. Once physically installed and wired, the device must be configured through the solar inverter's management interface to ensure proper communication and data synchronization.
What to consider before purchase
Verify that your electrical system is 3-phase
Ensure a local Ethernet connection is available at the installation site
Check compatibility with your specific Huawei inverter model
Usage recommendations
For optimal performance and data security, ensure the Ethernet cabling is properly shielded and routed away from high-voltage power lines to prevent signal interference. Regularly check the inverter management portal to ensure the meter remains online and calibrated correctly.

## FAQ

### How much does the Huawei DTSU666-FE 3-Phase Fast Ethernet Meter cost, and is it available for purchase?

The price is 220.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 15 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 23.07.2026 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 Huawei DTSU666-FE 3-Phase Fast Ethernet Meter 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 OEM 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 OEM 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