# Legrand K4003A Living Now 1-Module Staircase Switch

**URL:** https://aio.lv/en/product--legrand-k4003a--12446944
**Data updated:** 2026-05-18 02:41 (EEST)
**Category:** Smart Switches
**Manufacturer:** Legrand
**Manufacturer code:** K4003A
**EAN:** 8005543653395
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 18.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 15.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--legrand-k4003a--12446944

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

The Legrand K4003A is a 1-module staircase switch from the Living Now series, designed for reliable lighting control. Featuring automatic terminals for quick and secure installation, this switch is ideal for modern electrical systems requiring versatile switching solutions. Its compact design ensures seamless integration into standard wall boxes, providing a professional finish for residential or commercial interiors.

## Long description

The Legrand K4003A Living Now 1-module staircase switch is a high-quality electrical component designed for efficient lighting control in residential and commercial environments. As part of the sophisticated Living Now series, this switch combines modern aesthetics with reliable mechanical performance, ensuring seamless integration into contemporary interior designs. It is engineered for durability and ease of use, providing a stable solution for managing lighting circuits from multiple locations.
Advantages
This staircase switch offers significant benefits due to its compact 1-module design, which allows for flexible configuration within standard wall boxes. The inclusion of automatic terminals facilitates a faster and more secure installation process, reducing the time required for electrical wiring. Its robust construction ensures long-term reliability, while the refined design of the Living Now series complements various architectural styles, making it an excellent choice for both new installations and renovation projects.
Suitable for
Residential lighting control systems
Commercial office spaces
Staircase and hallway lighting configurations
Multi-point switching setups
This switch may not be suitable for high-power industrial machinery or circuits exceeding its rated electrical capacity. It is designed specifically for standard lighting applications and should not be used in environments with extreme moisture or dust without appropriate protective enclosures.
Key specifications
Module size: 1-module
Width: 45 mm
Depth: 22 mm
Height: 34 mm
Connection type: Automatic terminals
Installation should be performed by a qualified professional in accordance with local electrical regulations. Ensure the power supply is disconnected before beginning the installation. Insert the wires into the automatic terminals until they are firmly secured, then mount the switch into the wall box and attach the appropriate cover plate from the Living Now range to complete the installation.
What to consider before purchase
Ensure compatibility with your existing wall box and cover plate system
Verify the wiring requirements for your specific staircase switching circuit
Check the total number of modules needed for your wall plate configuration
For optimal performance and safety, ensure that all electrical connections are tight and that the switch is installed in a dry, indoor environment. Regularly inspect the switch for any signs of wear or damage to maintain system integrity.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.021 kg |
| Height | 34 mm |
| Width | 45 mm |
| Depth | 22 mm |
| Quantity per pack | 10 pc(s) |

## FAQ

### How much does the Legrand K4003A Living Now Staircase Switch cost, and is it available for purchase?

The price is 18.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 26 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 15.07.2026 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 Legrand 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 Legrand 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/12446944/68778596_large.webp