# F&F BIS-404 Sequential Impulse Relay 5A 230V AC 2Z

**URL:** https://aio.lv/en/product--ff-bis-404--12453761
**Data updated:** 2026-05-18 02:47 (EEST)
**Category:** Control Systems
**Manufacturer:** FF
**Manufacturer code:** BIS-404
**EAN:** 5908312595748
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The F&F BIS-404 is a sequential impulse relay designed for lighting control systems. It operates at 230V AC with a maximum current of 5A and features two normally open (2Z) contacts. This relay allows for sequential switching of electrical circuits, making it an ideal solution for managing multi-stage lighting installations in residential and commercial buildings.

## Long description

The F&F BIS-404 sequential impulse relay is a specialized electrical component engineered for advanced lighting control systems. Operating at 230V AC with a maximum current capacity of 5A, this device features two normally open (2Z) contacts. It is designed to facilitate the sequential switching of electrical circuits, providing a reliable method for managing multi-stage lighting installations in both residential and commercial environments.
Advantages
The primary benefit of the BIS-404 is its ability to perform sequential switching, which allows for complex lighting scenarios to be managed through simple impulse signals. By utilizing two independent contacts, the relay enables the activation of different lighting groups in a specific order, enhancing energy efficiency and user convenience. Its robust construction ensures long-term operational stability, while the standard 230V AC compatibility allows for seamless integration into existing electrical infrastructures without the need for additional power supplies.
Suitable for
Multi-stage lighting control in residential homes
Commercial office lighting management
Sequential activation of decorative or architectural lighting
Automation of lighting circuits requiring step-by-step switching
This relay may not be suitable for high-power industrial machinery or circuits exceeding the 5A current limit. It is also not intended for use in DC voltage systems or applications requiring continuous high-frequency switching beyond its mechanical design specifications.
Key specifications
Operating voltage: 230V AC
Maximum current: 5A
Contact configuration: 2 normally open (2Z) contacts
Function: Sequential impulse switching
To use the F&F BIS-404, the device must be installed by a qualified electrician into a standard electrical distribution board. The control input should be connected to a momentary push-button switch, which sends an impulse to the relay. Each subsequent press of the button advances the relay to the next state, toggling the contacts according to the internal sequential logic. Ensure all wiring is secured firmly to the terminals to prevent overheating or poor connectivity.
What to consider before purchase
Verify that the total load of the lighting circuits does not exceed the 5A limit
Ensure the installation space is compatible with standard DIN-rail mounting
Confirm that the control system utilizes momentary impulse switches
For optimal performance and safety, always ensure that the electrical circuit is de-energized before installation. Regularly inspect the relay terminals for signs of wear or loose connections to maintain system reliability.

## FAQ

### What payment options are available?

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### 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

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