# F&F BIS-411M Bistable Relay 1P 16A 230V AC with Memory

**URL:** https://aio.lv/en/product--ff-bis-411m--12459522
**Data updated:** 2026-05-18 09:34 (EEST)
**Category:** Control Systems
**Manufacturer:** FF
**Manufacturer code:** BIS-411M
**EAN:** 5902431670188
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 22.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 18.59 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-bis-411m--12459522

## 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

The F&F BIS-411M is a 1-pole bistable relay designed for 230V AC circuits with a 16A switching capacity. Featuring a built-in memory function, this relay maintains its state even after a power failure. It is ideal for lighting control systems, allowing users to switch electrical loads from multiple locations using momentary push-buttons, ensuring reliable and efficient operation in residential or industrial electrical installations.

## Long description

The F&F BIS-411M is a high-quality 1-pole bistable relay engineered for 230V AC electrical circuits, offering a robust 16A switching capacity. This device is specifically designed to facilitate the control of lighting or other electrical loads from multiple points using simple momentary push-buttons. A standout feature of this relay is its integrated memory function, which ensures that the device retains its last switching state even after a power supply interruption, automatically returning to that state once power is restored.
Advantages
The primary benefit of the BIS-411M is its ability to simplify complex wiring for multi-point lighting control, replacing traditional cross-over switches with more reliable and easier-to-install momentary buttons. The built-in memory mechanism provides significant convenience and safety, as it prevents unexpected changes in the state of connected devices following a blackout. Its compact design and high current rating make it a versatile component for both residential and industrial electrical systems, ensuring long-term durability and consistent performance under standard operating conditions.
Suitable for
Lighting control systems in hallways and staircases
Multi-point switching of electrical appliances
Residential and commercial building automation
Industrial control panels requiring state retention
This relay is not suitable for controlling high-inductive loads that exceed the specified 16A rating or for applications requiring complex timing or dimming functions, as it is strictly a bistable switching device. It is also not intended for use in DC circuits or environments where the voltage significantly deviates from the 230V AC standard.
Key specifications
Contact configuration: 1-pole (1P)
Maximum switching current: 16A
Operating voltage: 230V AC
Function: Bistable with memory
Control method: Momentary push-buttons
To use the F&F BIS-411M, connect the relay to the 230V AC power supply and wire the momentary push-buttons in parallel to the control input. Each press of a button will toggle the relay state, switching the connected load on or off. Ensure that all electrical connections are made by a qualified professional in accordance with local safety regulations and the provided wiring diagram.
What to consider before purchase
Verify that the total load current does not exceed 16A
Ensure the control circuit is compatible with 230V AC momentary switches
Check available space in the electrical distribution board for mounting
For optimal performance and longevity, ensure that the relay is installed in a dry, dust-free environment and that all terminal screws are tightened securely to prevent overheating.

## FAQ

### How much does the F&F BIS-411M Bistable Relay 16A 230V cost, and is it available for purchase?

The price is 22.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 23 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 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

https://aio.lv/img/cache/product/12459522/68761567_large.webp