# MONTIS installation step switch WP-5F EXTENSA MT055S — wiring connector for stair lighting

**URL:** https://aio.lv/en/product--montis-mt055s--11750738
**Data updated:** 2026-03-08 13:52 (EET)
**Category:** Smart Switches
**Manufacturer:** MONTIS
**Manufacturer code:** MT055S
**EAN:** 5901811404825
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.49 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 5.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--montis-mt055s--11750738

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

MONTIS WP-5F EXTENSA MT055S is an installation stair (step) switch designed for controlling staircase or corridor lighting circuits. It provides a dedicated wiring connector for toggling lights from one or multiple locations in a stairwell setup. The unit is intended for fixed electrical installation, compatible with standard switch modules and practical for residential and commercial stair lighting control.

## Long description

MONTIS WP-5F EXTENSA MT055S is an installation step (stair) switch intended for fixed electrical installation to control staircase or corridor lighting circuits. The unit serves as a wiring connector for step-type switching, allowing lights to be toggled from one or several locations in stairwell or passage installations. It is designed for integration with standard switch modules and provides a compact mounting solution for residential and commercial stair lighting control.
Advantages
The device offers reliable step-switch operation with straightforward wiring and compatibility with common switch modules used in building installations. Its compact form factor facilitates installation in standard back boxes and minimizes space requirements behind faceplates. The switch is suitable for repeated switching cycles and is intended to conform to typical electrical installation practices for stair and corridor lighting.
Suitable for
 Staircase lighting control in residential buildings
 Corridor and passageway lighting in commercial premises
 Multi-point lighting circuits where step switching is required
 Retrofit and new-build electrical installations using standard modules
Key specifications
 Type: Installation step (stair) switch for fixed mounting
 Function: Wiring connector for step-type (impulse) switching of lighting circuits
 Compatibility: Designed to work with standard switch modules and faceplates
 Application: Suitable for residential and commercial stairwell and corridor lighting
 Installation: Mounts in standard electrical back boxes behind switch modules
How to use
Install the WP-5F EXTENSA unit in the appropriate electrical back box and connect incoming and outgoing conductors according to the circuit design for step (impulse) switching. Ensure power is turned off before wiring. After mounting and securing the unit, attach the compatible switch module and faceplate. Verify correct operation by restoring power and performing test switching from all designated locations in the circuit.
Usage recommendations
Use the device only within the rated electrical system and follow applicable local wiring regulations. For safety and conformity, have installation and wiring carried out by a qualified electrician. Regularly inspect connections for tightness and signs of wear in installations with frequent switching cycles.

## FAQ

### How much does the MONTIS WP-5F EXTENSA MT055S stair switch cost, and is it available for purchase?

The price is 6.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 54 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 13.07.2026 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 MONTIS 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 MONTIS 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/11750738/67129436_large.webp