# Smart switch Sonoff 4CHR3

**URL:** https://aio.lv/en/product--sonoff-4chr3--6542595
**Data updated:** 2025-12-02 16:15 (EET)
**Category:** Home Automation
**Manufacturer:** Sonoff
**Manufacturer code:** 4CHR3
**EAN:** 6920075775822
**Warranty:** 1 Year
**Availability:** Available for order
**Price:** 20.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 17.35 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sonoff-4chr3--6542595

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.99 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

The Sonoff 4CHR3 is a smart switch that allows you to control your appliances wirelessly. It operates on an AC voltage range of 100-240V and supports a frequency of 50-60Hz. Made from durable polycarbonate, its dimensions are 90mm in width, 34mm in depth, and 145mm in height. This switch is perfect for automating your home and enhancing convenience.

## Long description

4CHR3 and 4CHPROR3 are 4-gang Wi‑Fi smart switches designed to add remote and automated control to conventional home circuits. These modules support three operating modes—self-locking, interlock and inching—accessible directly from the companion app. They work with Alexa and Google Home for voice control and are housed in a flame-retardant PC enclosure for increased safety.
Advantages
The smart switch lets you control four loads independently or configure channels to operate in interlock mode so one channel turns on while others turn off. In inching mode a channel stays on for a preset interval and then switches off automatically, useful for corridor or staircase lighting. App access provides quick mode selection and remote switching, while voice assistant compatibility enables hands-free operation.
Key specifications
 Model: 4CHR3 / 4CHPROR3
 Number of channels: 4
 Connectivity: Wi‑Fi (works with Alexa and Google Home)
 Operating modes: self‑locking, interlock, inching
 Enclosure: flame‑retardant PC
How to use
Install the switch in accordance with local electrical codes and the manufacturer’s wiring diagram. Pair the device with the mobile app, then select the desired operating mode for each channel: self‑locking for independent on/off control, interlock to make one channel active while others are turned off, or inching to set a timed on interval. Use the app or connected voice assistant to switch channels remotely or by voice commands.
Recommendations
For safety, have a qualified electrician perform the installation and ensure the connected loads do not exceed the switch’s rated capacity. Use inching mode for temporary corridor lighting and interlock mode for motorized blinds or garage doors where opposite actions are required.

## Specifications

| Feature | Value |
|---|---|
| Type | Smart switch |
| Operating temperature (T-T) | -10 - 40 |
| Height | 145 mm |
| Width | 90 mm |
| Depth | 34 mm |
| Connectivity technology | Wireless |
| Product colour | White |
| Housing material | Polycarbonate (PC) |
| AC voltage range | 100 - 240 |
| AC input frequency | 50 - 60 |
| Built-in display | No |
| Works with Amazon Alexa | Yes |
| Works with the Google Assistant | Yes |

## FAQ

### How much does the Smart switch 4CHR3 cost, and is it available for purchase?

The price is 20.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 402 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 30.06.2026 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 Sonoff 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 Sonoff 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

### Where can I download the instructions for Smart switch 4CHR3?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/6542595/65595726_large.webp