# Relay output module Grenton REL-204-D-01 with 4 relay outputs for DIN rail mounting

**URL:** https://aio.lv/en/product--grenton-rel-204-d-01--2417706
**Data updated:** 2026-06-25 19:49 (EEST)
**Category:** Other goods
**Manufacturer:** Grenton
**Manufacturer code:** REL-204-D-01
**EAN:** 5902983719137
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 176.99 €
**Prices and availability valid until:** 2026-07-27 23:59
**Price without VAT (21%):** 146.27 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--grenton-rel-204-d-01--2417706

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The Grenton REL-204-D-01 is a relay output module featuring 4 independent relay outputs in a compact housing designed for DIN rail mounting. It provides switch control for lighting, pumps, heaters and other electrical loads in building automation systems. The module suits applications where centralized or distributed switching is needed and simplifies integration into control panels.

## Long description

The Grenton REL-204-D-01 is a professional relay output module designed for advanced building automation systems. It features four independent relay outputs, allowing for precise control of various electrical devices. The device is housed in a compact enclosure specifically engineered for standard DIN rail mounting, making it an ideal choice for organized control cabinets and electrical distribution boards. By utilizing the TF-Bus communication interface, this module ensures reliable and efficient integration within the Grenton smart home ecosystem.
Advantages
This module offers significant flexibility in managing electrical loads due to its four independent channels, which can be configured to operate separately. The DIN rail mounting design facilitates a clean and professional installation, reducing wiring complexity within control panels. Its robust construction ensures long-term reliability in demanding automation environments, while the TF-Bus connectivity allows for seamless communication with other system components, providing a scalable solution for both residential and commercial building management.
Suitable for
Lighting control systems
Pump and valve operation
Electric heating management
General purpose electrical load switching
When it may not be suitable
This module is not intended for switching high-power industrial machinery that exceeds the specified relay contact ratings. It is also not suitable for environments where wireless communication is required, as it relies on a wired TF-Bus connection.
Key specifications
Number of relay outputs: 4
Mounting type: DIN rail
Communication interface: TF-Bus
Application: Building automation
How to use
The module should be installed by a qualified professional onto a standard DIN rail within a distribution board. Once physically mounted, connect the TF-Bus communication cable to the designated terminals to integrate the module into the Grenton network. Connect the electrical loads to the relay output terminals according to the wiring diagram provided in the technical documentation. After installation, the module must be configured via the Grenton software environment to assign specific functions to each of the four outputs.
What to consider before purchase
Ensure the total power consumption of connected loads does not exceed the relay contact limits.
Verify that your existing system supports the TF-Bus communication protocol.
Confirm there is sufficient space on the DIN rail within your electrical cabinet.
Usage recommendations
Always ensure that the power supply is disconnected before performing any wiring or maintenance tasks to prevent electrical shock and damage to the device.

## FAQ

### How much does the Grenton REL-204-D-01 relay output module 4 outputs cost, and is it available for purchase?

The price is 176.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 364 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 09.07.2026 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 Grenton REL-204-D-01 relay output module 4 outputs 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 Grenton 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 Grenton 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

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