# Shelly 3EM electrical relay White Wi-Fi 802.11b/g/n 2.4GHz

**URL:** https://aio.lv/en/product--oem-20211--11240102
**Data updated:** 2026-02-18 06:45 (EET)
**Category:** Home Automation
**Manufacturer:** OEM
**Manufacturer code:** 20211
**EAN:** 3800235262214
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 74.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 61.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--oem-20211--11240102

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The Shelly 3EM is a compact electrical relay designed for Wi-Fi connectivity. It supports Wi-Fi standards 802.11b/g/n and operates at a frequency of 2.4 GHz. With dimensions of 73 x 57 x 22 mm, it is suitable for various applications in smart home systems, allowing for remote control and monitoring of electrical devices.

## Long description

The Shelly 3EM electrical relay White Wi-Fi 802.11b/g/n 2.4GHz is a compact three-phase energy meter and relay device designed for integration into smart home and small commercial electrical systems. It combines power monitoring and contactor control in a single module, enabling remote measurement of energy consumption and control of connected circuits over a 2.4 GHz Wi‑Fi network. With a slim housing measuring 73 x 57 x 22 mm, the unit fits in enclosures where space is limited and supports monitoring of individual appliances, lighting circuits, security systems, heating and cooling equipment, and whole-site consumption including self-generated solar power.
Advantages
The module provides simultaneous energy metering and relay control, allowing both real-time monitoring and the ability to switch circuits remotely. Wi‑Fi 802.11b/g/n connectivity at 2.4 GHz ensures compatibility with common home networks without the need for additional hubs. The compact dimensions permit DIN-rail or enclosure mounting in confined electrical panels. Built-in measurement for three separate phases enables accurate tracking of multi-phase installations and aggregated consumption reporting for a full overview of energy use.
Suitable for
Monitoring and controlling individual household appliances and lighting circuits
Measuring and switching three-phase circuits in small commercial premises
Tracking whole-site consumption and generated solar energy
Integrating energy measurement and contactor control into smart home systems
Key specifications
Wireless standard: Wi‑Fi 802.11b/g/n
Operating frequency: 2.4 GHz
Form factor: compact module, 73 x 57 x 22 mm
Functionality: three-phase energy metering and relay/contactor control
Mounting: suitable for electric enclosures and limited-space installations
How to use
Install the Shelly 3EM in the electrical panel following local electrical regulations and ensure correct phase connections for three-phase metering. Connect the device to the 2.4 GHz Wi‑Fi network and configure it using the manufacturer’s setup interface or compatible home automation platforms. After initial setup, monitor real-time energy consumption and control the contactor outputs remotely through the device interface, mobile app, or integrated automation rules.
Usage recommendations
Place the device inside a properly ventilated electrical enclosure and avoid exposure to direct moisture. Use the Shelly 3EM with a stable 2.4 GHz Wi‑Fi network to ensure reliable telemetry and switching. For safety and compliance, installation and wiring should be performed by a qualified electrician.

## Specifications

| Feature | Value |
|---|---|
| Dimensions (WxDxH) | 73 x 57 x 22 |
| Wi-Fi standards | Wi-Fi 4 (802.11n), 802.11g, 802.11b |
| Operating temperature (T-T) | -40 - 40 |
| Product colour | White |
| Overload protection | No |
| Channels quantity | 3 channels |
| Overheat protection | No |
| Wi-Fi | Yes |
| Remotely operated | Yes |
| Maximum indoor range | 30 m |
| Sunrise/sunset time | Yes |
| Number of modules | 1 |
| Transmit power | 1 mW |
| Transmission range | 30 - 50 |
| Wi-Fi frequency | 2.4 GHz |
| Weekly schedule | Yes |
| Intelligent On/Off | Yes |

## FAQ

### How much does the Shelly 3EM electrical relay White cost, and is it available for purchase?

The price is 74.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 200 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 09.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Shelly 3EM electrical relay White be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 OEM 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 OEM 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/11240102/64546993_large.webp