# F&F BIS-411B Bistable Relay with Manual Control Button for DIN Rail Mounting

**URL:** https://aio.lv/en/product--ff-bis-411b--12457501
**Data updated:** 2026-05-18 09:41 (EEST)
**Category:** Control Systems
**Manufacturer:** FF
**Manufacturer code:** BIS-411B
**EAN:** 5902431674032
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 21.48 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-bis-411b--12457501

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

The F&F BIS-411B is a bistable relay designed for reliable lighting and electrical circuit control. It features an integrated manual control button, allowing for local operation directly on the device. Engineered for standard DIN rail mounting, this relay is ideal for residential and industrial automation systems, providing efficient switching of electrical loads through impulse signals.

## Long description

The F&F BIS-411B is a high-quality bistable relay engineered for the efficient control of lighting and electrical circuits. This device allows for the switching of electrical loads through impulse signals sent from momentary push-buttons. A standout feature of this model is the integrated manual control button located directly on the housing, which provides the flexibility to toggle the circuit state locally without needing external inputs. Designed for installation on a standard 35 mm DIN rail, it integrates seamlessly into modern electrical distribution boards for both residential and industrial automation applications.
Advantages
The primary benefit of the F&F BIS-411B is its versatility in managing electrical loads from multiple locations using simple parallel-connected push-buttons. The inclusion of a manual override button ensures that the system remains operational even if the control circuit experiences issues or if immediate local intervention is required. Its robust construction and DIN rail mounting compatibility make it a reliable choice for professional electrical installations, ensuring long-term performance and ease of maintenance within complex wiring systems.
Suitable for
Controlling lighting systems from multiple points in hallways or staircases
Managing electrical appliances via impulse signals
Industrial automation and control panel integration
Smart home lighting setups requiring manual override capabilities
When it may not be suitable
This relay is not designed for high-power industrial motors or loads that exceed its rated switching capacity, as this could lead to premature contact failure. It is also not intended for applications requiring complex logic or programmable timing functions, as it operates strictly as a simple bistable switching device.
Key specifications
Mounting type: 35 mm DIN rail
Control method: Impulse signal via push-buttons or integrated manual button
Operating voltage: Standard electrical grid compatibility
Design: Bistable relay mechanism
How to use
To install the device, mount it onto a standard 35 mm DIN rail within your electrical cabinet. Connect the power supply and the load according to the wiring diagram provided with the unit. Connect the external momentary push-buttons in parallel to the control input terminals. Once powered, a short impulse from any connected button will toggle the relay state. You can also press the manual button on the front of the device at any time to switch the load on or off independently of the remote control inputs.
What to consider before purchase
Ensure the electrical load does not exceed the relay's maximum switching current
Verify that your control wiring supports momentary impulse signals
Confirm available space on the DIN rail within your distribution board
Usage recommendations
For optimal longevity and safety, ensure that all electrical connections are tightened securely and that the device is installed in an environment protected from excessive moisture, dust, and extreme temperatures.

## FAQ

### How much does the F&F BIS-411B Bistable Relay for DIN Rail cost, and is it available for purchase?

The price is 25.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 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 02.07.2026 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 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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