How does the Shelly 1 Mini Gen4 differ from the Gen3?

The Gen4 keeps the same miniature body and 8 A dry contact, but adds a Zigbee 802.15.4 radio and a faster processor compared with the Gen3, which had only Wi-Fi and Bluetooth.

Does the Shelly 1 Mini Gen4 measure power consumption?

No, this model has no metering. If you need power monitoring, choose the Shelly 1PM Mini Gen4 version.

What is the maximum load the relay can handle?

Up to 8 A / 240 V~ (2000 W) on AC or 5 A / 30 V⎓ (150 W) on DC, via a dry NO contact.

Does it need a neutral wire in the box?

Yes. The module is powered by 110-240 V~ and needs both line and neutral in the box. In many older apartments the neutral does not reach the switch, so check before installation.

Which ecosystems does it work with?

Through Matter and the Shelly app it integrates with Google Home, Amazon Alexa, Apple Home, SmartThings and Home Assistant, locally or via cloud.

Will it fit behind a regular switch?

Yes, it is only 29x34x16 mm and 19 g, designed for mounting in standard wall boxes behind a switch or socket.

Shelly 1 Mini Gen4 relay Wi-Fi Zigbee

Name: Shelly 1 Mini Gen4 — compact smart relay Wi-Fi, Zigbee, Matter
Brand: Shelly
SKU: SHELLY-1-MINI-GEN4

casasmart.md

Compatibility

Works with these ecosystems

Protocols

Wi-Fi
BLE
Zigbee
Matter

Ecosystems

Home Assistant
Google Home
Amazon Alexa
Apple Home
Samsung SmartThings

What it is, who it's for, what it does

About this product

Shelly 1 Mini Gen4 is the evolution of the 1 Mini Gen3: the same miniature body that fits behind a switch or socket, now with a faster processor and a Zigbee 802.15.4 radio on top of Wi-Fi and Bluetooth. The relay is a dry contact (NO, potential-free), so it switches both 230 V loads and low-voltage control circuits — up to 8 A / 240 V~ (2000 W) or 5 A / 30 V⎓.<br><br>Being Matter-compatible, the module plugs straight into modern ecosystems and can be driven from the Shelly app, voice assistants or a local controller, with no mandatory cloud. Use it to turn an ordinary lighting point, a pump, a water heater or a gate motor into a remotely controlled device with schedules and automations. Consumption below 1.2 W and a footprint of just 29x34x16 mm make it suitable for the standard wall boxes used in apartments and houses across Moldova.

Delivery
Free from 1500 MDL
Returns
30 days to return
Warranty
24 months

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CasaSmart essentials

What it works with, what it needs, what you can do

Verified compatibility

We test every device for these ecosystems. For non-standard integrations contact us before ordering.

Home Assistant
Zigbee
Matter
KNX
Wi-Fi

Install & requirements

What you need on your side and what we deliver.

Zigbee hub or Matter gateway for wireless variants
65 mm back-box or DIN panel for wired variants
Local setup on Home Assistant — included in install

Request install quote

Smart scenarios

Three typical automations we set up after the install.

01Morning: warm light + blinds up + climate at 22 °C
02Leaving: lights off, arm sensors, close the gas
03Evening: warm ambient + cinema scene

Where it works

Use cases

You switch on the hallway from your phone before entering the apartment in Chisinau in the evening.

Hidden behind the existing switch, it controls a lighting point with no change to the frame or visible wiring.

The boiler turns itself on morning and evening to follow the night tariff.

The 8 A dry contact switches a power relay or the water heater directly, on a schedule.

Lights and the gate stay controllable even if the home internet drops.

Unlike the Gen3, it joins a local hub over Zigbee for offline automations.

Analytics

See consumption — save on bills

Real-time consumption tracking via the eWeLink app. Daily, weekly and monthly history helps identify the most energy-hungry devices.

For the installer

Technical specifications

full spec · wiring · datasheet

Power

Максимальный ток (AC): 8 A
Максимальное напряжение (AC): 240 V~
Максимальная мощность (AC): 2000 W
Максимальный ток (DC): 5 A
Максимальное напряжение (DC): 30 V⎓
Supply voltage: 110-240 V~
Power consumption: < 1.2 W
Тип контакта реле: Сухой, NO, 1-полюсный

Wireless

Wi-Fi: 802.11 b/g/n/ax (2.4 ГГц)
Bluetooth: 5.0
Zigbee: 802.15.4

Connectivity

Matter: Поддерживается

Physical

Dimensions (W×H×D): 34×29×16 mm
Weight: 19 g

Environment

Operating temperature: -20…40 °C
Humidity: 30-70 % RH

Other

Model: S4SW-001X8EU

Full device datasheet

Support

Frequently asked questions

How does the Shelly 1 Mini Gen4 differ from the Gen3?
The Gen4 keeps the same miniature body and 8 A dry contact, but adds a Zigbee 802.15.4 radio and a faster processor compared with the Gen3, which had only Wi-Fi and Bluetooth.
Does the Shelly 1 Mini Gen4 measure power consumption?
No, this model has no metering. If you need power monitoring, choose the Shelly 1PM Mini Gen4 version.
What is the maximum load the relay can handle?
Up to 8 A / 240 V~ (2000 W) on AC or 5 A / 30 V⎓ (150 W) on DC, via a dry NO contact.
Does it need a neutral wire in the box?
Yes. The module is powered by 110-240 V~ and needs both line and neutral in the box. In many older apartments the neutral does not reach the switch, so check before installation.
Which ecosystems does it work with?
Through Matter and the Shelly app it integrates with Google Home, Amazon Alexa, Apple Home, SmartThings and Home Assistant, locally or via cloud.
Will it fit behind a regular switch?
Yes, it is only 29x34x16 mm and 19 g, designed for mounting in standard wall boxes behind a switch or socket.

Same ecosystem

Works together

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Same category

Questions about this product?

A CasaSmart manager calls you within 1–2 working hours and answers anything — compatibility, install, alternatives.

+373 60 944 922

Updated: 18 June 2026· reviewed by CasaSmart Expert Team

Compatibility