# Smart Home dimmer actuator Homematic IP 143166A0 for brand switch, phase-second, customer return

**URL:** https://aio.lv/en/product--homematic-ip-ec694417719--12219831
**Data updated:** 2026-03-29 16:07 (EEST)
**Category:** Smart Switches
**Manufacturer:** Homematic IP
**Manufacturer code:** EC/694417719
**EAN:** 676737101398
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.49 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 24.37 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--homematic-ip-ec694417719--12219831

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.89 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Homematic IP Smart Home dimmer actuator model 143166A0 (customer return) is a device for dimming lighting circuits controlled via a compatible brand switch. Designed for phase-second (phase on secondary) wiring, it integrates into Homematic IP smart home setups to adjust light intensity, enable scene control and support automated schedules. Suitable for retrofit and new installations where fine control of lighting is required.

## Long description

Homematic IP Smart Home dimmer actuator 143166A0 (customer return) is a compact in-wall device designed to control and dim lighting circuits when used with a compatible brand switch. Intended for phase-second installation, the actuator integrates into Homematic IP networks to provide smooth brightness adjustment, scene execution and time-based automation. This unit is suitable for retrofit projects and new electrical installations where precise dimming of incandescent, halogen or compatible LED loads is required and where control via a standard wall switch is preferred.
Advantages
The device provides stepless dimming, enabling precise setting of light levels and smooth transitions between brightness states. Its compatibility with Homematic IP systems allows centralized control, remote operation and the inclusion of the lighting circuit in automated scenes and schedules. The compact in-wall form factor fits behind a conventional brand switch, keeping the visible switch unchanged while adding smart functionality. Phase-second wiring support allows installation where the phase conductor is present at the switch location while the neutral is routed differently.
Suitable for
 Control and dimming of household lighting circuits driven by incandescent, halogen or dimmable LED lamps
 Retrofit of existing switch locations to add smart dimming without changing switch appearance
 Integration into Homematic IP scenes, timers and remote-control routines
 Rooms where phase-second wiring is used (phase at switch)
Key specifications
 Installation type: in-wall actuator designed to be mounted behind a wall switch
 Wiring: phase-second (phase present at switch location)
 Functionality: stepless dimming and on/off switching of connected lighting
 Compatibility: integrates with Homematic IP smart home ecosystem and compatible brand switches
 Load types: suitable for incandescent, halogen and compatible dimmable LED loads (observe lamp compatibility and maximum load limits)
How to use
Install the actuator in the switch cavity following applicable electrical safety standards and local regulations; installation requires connection to the phase conductor and the switched output as per phase-second wiring. After electrical installation, add the actuator to the Homematic IP system using the manufacturer's pairing procedure so it appears in the app for configuration. Configure dimming behavior, scenes and schedules in the Homematic IP application; the physical switch continues to operate as usual while the actuator provides smart dimming and remote control functions.
Usage recommendations
Before installation, verify lamp compatibility and total connected load to ensure reliable dimming performance. Use this customer-return unit only after a visual inspection and functional test; if in doubt about wiring or safety, consult a qualified electrician. For best results with LED lamps, choose models marked as dimmable and test the combination with the actuator to avoid flicker or limited dimming range.

## FAQ

### How much does the Homematic IP dimmer actuator 143166A0 cost, and is it available for purchase?

The price is 29.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 08.07.2026 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 Homematic IP 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 Homematic IP 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/12219831/68078762_large.webp