# Relay module No name 2R-D7 — 2-channel relay module with Modbus RTU interface

**URL:** https://aio.lv/en/product--no-name-2r-d7--11959796
**Data updated:** 2026-03-11 13:59 (EET)
**Category:** Control Systems
**Manufacturer:** No name
**Manufacturer code:** 2R-D7
**EAN:** 5902887067334
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 10.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 8.67 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--no-name-2r-d7--11959796

## 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

2R-D7 is a two-channel relay module from No name with Modbus RTU communication. The module provides two relay outputs controllable via Modbus RTU protocol for switching loads or interfacing with automation systems. Suitable for building automation, industrial control panels and remote switching tasks where serial Modbus integration is required.

## Long description

2R-D7 is a two-channel relay module by No name designed for Modbus RTU integration. The module provides two independently controllable relay outputs accessible via the Modbus RTU serial protocol. It is intended for switching resistive or inductive loads within the voltage and current ratings of the relays and for integration into building automation, industrial control panels and other systems that use RS‑485/Modbus communication.
Advantages
The 2R-D7 offers two relay channels in a compact module with Modbus RTU compatibility, enabling remote control and monitoring over serial networks. Its straightforward interface reduces wiring complexity in multi-device installations, while independent channels allow separate switching of two circuits. The device is suitable for mounting in control cabinets and for use in systems that require deterministic serial communication.
Suitable for
Building automation for lighting and HVAC control
Industrial control panels and machine interfaces
Remote switching of pumps, fans or auxiliary equipment
Integration into SCADA or PLC systems using Modbus RTU
Key specifications
Two independent relay outputs (2 channels)
Serial Modbus RTU communication protocol support
RS‑485 compatible serial interface (Modbus RTU)
Compact module form factor for panel or DIN-rail installations
Separate control of each relay via Modbus registers
How to use
Connect the module to an RS‑485 network and assign a unique Modbus RTU address for each device. Wire the relay outputs to the load circuits within the relays’ rated voltage and current limits, and provide the required power supply as specified by the module documentation. Use a Modbus master (PLC, SCADA, or PC application) to write control registers that operate each relay channel and to read status registers for monitoring. Ensure wiring follows local electrical safety standards and verify correct addressing and parity settings on the Modbus network before commissioning.
Usage recommendations
For reliable operation, confirm relay voltage and current ratings are compatible with the connected loads, use proper surge suppression for inductive loads, and implement termination and biasing on the RS‑485 bus as needed. Regularly verify communication settings (baud rate, parity, stop bits) and perform periodic functional tests as part of maintenance routines.

## FAQ

### How much does the No name 2R-D7 relay module cost, and is it available for purchase?

The price is 10.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 21 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. 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 No name 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 No name 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/11959796/67405203_large.webp