# F&F STR-421 24V Roller Blind Controller 24V 50-60Hz IP20

**URL:** https://aio.lv/en/product--ff-str-421-24v--12452478
**Data updated:** 2026-05-18 02:54 (EEST)
**Category:** Home Automation
**Manufacturer:** FF
**Manufacturer code:** STR-421 24V
**EAN:** 5908312591450
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 28.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 23.96 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-str-421-24v--12452478

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The F&F STR-421 24V is a dedicated roller blind controller designed for 24V AC/DC systems. Operating at 50-60Hz with an IP20 protection rating, this device enables precise control of electric motors for blinds, shutters, or awnings. It is ideal for residential and commercial automation, offering reliable performance and easy integration into standard electrical installations for efficient light and privacy management.

## Long description

The F&F STR-421 24V is a specialized roller blind controller engineered for precise management of 24V AC/DC electric motors. Designed for seamless integration into modern electrical systems, this device provides reliable operation for roller blinds, shutters, and awnings. Its robust construction ensures consistent performance in both residential and commercial environments, allowing users to automate light levels and privacy settings with ease.
Advantages
This controller offers a high level of operational stability by supporting both AC and DC power sources within the 24V range. Its compact design allows for straightforward installation in standard electrical boxes, minimizing space requirements. The device is built to handle the specific electrical demands of motor-driven window coverings, ensuring smooth movement and long-term durability. By utilizing this controller, users can achieve efficient automation that contributes to better energy management and enhanced comfort in any indoor space.
Suitable for
Residential roller blind automation
Commercial office shutter control
Automated awning systems
Smart home light management
When it may not be suitable
This device is strictly designed for 24V systems and cannot be used with standard 230V mains voltage motors. Attempting to connect it to higher voltage equipment will result in permanent damage to the controller and the motor.
Key specifications
Supply voltage: 24V AC/DC
Frequency: 50-60Hz
Protection rating: IP20
Compatibility: 24V electric motors for blinds and shutters
How to use
The controller should be installed by a qualified professional in accordance with local electrical regulations. It is typically mounted within a flush-mounted or surface-mounted electrical box. Once the power supply and motor wires are correctly connected to the designated terminals, the device can be operated via external switches or integrated into a broader automation system. Ensure that the wiring matches the provided technical diagram to prevent short circuits or motor malfunctions.
What to consider before purchase
Verify that your motor operates on 24V AC/DC
Ensure the installation location meets the IP20 dry environment requirements
Check that your existing switch configuration is compatible with the controller inputs
Usage recommendations
Always disconnect the power supply before performing any installation or maintenance work. Ensure that the motor load does not exceed the maximum switching capacity specified for the device to maintain operational safety and longevity.

## FAQ

### How much does the F&F STR-421 24V Roller Blind Controller cost, and is it available for purchase?

The price is 28.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 06.07.2026 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/12452478/68755082_large.webp