Descripción
The Shelly 1 Gen4 is a compact smart relay with a dry contact (potential-free), designed for the remote control of electrical appliances and integration into modern automation systems. It is ideal for controlling lighting, garage doors, fans, HVAC systems, electrical equipment and other smart home or commercial applications.
Compared to previous generations, Shelly 1 Gen4 offers a major advantage: support for Matter, Zigbee, Wi-Fi and Bluetooth, providing excellent flexibility for integration with modern smart home ecosystems. The device can operate locally, via the cloud or within complex automation scenarios.
Thanks to its compact size, the Shelly 1 Gen4 can be fitted into standard wall boxes, behind switches, sockets or in other confined spaces, without affecting the installation’s design.
Key features
- Smart relay with dry contact
-
Matter compatible
-
Wi-Fi, Bluetooth and Zigbee connectivity
- Local and cloud control
- Compatible with Amazon Alexa, Android, iOS, Google Home and Samsung SmartThings
- IntegratedZigbee repeater
-
BLE gateway for Shelly BLU devices
- Wi-Fi extender for IoT devices
- Support for MQTT, scripting, webhooks, HTTP API and KNX
- Compact installation in a standard flush-mounted box
Features and benefits
? Extensive compatibility – Shelly 1 Gen4 supports multiple modern protocols, including Matter and Zigbee, making it ideal for integration into advanced smart home systems.
? Remote control – You can switch connected devices on or off directly from the app, browser, tablet or PC, wherever you have internet access.
? Dry contact for various applications – It is suitable for controlling circuits with different voltages, including automatic gates, boilers, HVAC systems or other specialised automation.
? Advanced automation – Allows you to set up scenarios, schedules and automated actions based on time, presence or compatible sensors.
? Zigbee and Wi-Fi network extension – Can extend smart home networks, providing better connectivity for other devices.
? Professional integration – Support for MQTT, webhooks, scripting and KNX makes it suitable for advanced or commercial projects.
Applications
- Indoor and outdoor lighting control
- Garage door automation
- Fan and ventilation system control
- Control of electric radiators or heated surfaces
- Automation for offices, shops and commercial premises
- Control of pumps, motors and electrical equipment
| General information |
| Model |
Shelly 1 Gen4 (S4SW-001X16EU) |
| Product type |
Smart relay with dry contact |
| Installation |
In-wall / surface-mounted |
| Matter compatible |
Yes |
| Dimensions and construction |
| Dimensions |
37 x 42 x 16 mm |
| Weight |
26 g |
| Housing material |
Plastic |
| Case colour |
Blue |
| Power supply |
| Power supply voltage |
110–240 V AC / 12 V DC / 24–48 V DC |
| Power consumption |
< 1 W |
| No requirements |
Yes |
| Relay output |
| Output type |
Dry contact (potential-free) |
| Maximum switching voltage |
240V AC / 30V DC |
| Maximum current |
16A at 240V AC / 10A at 30V DC |
| Connectivity |
| Wi-Fi |
802.11 b/g/n/ax |
| Bluetooth |
5.0 LE |
| Zigbee |
3.0 |
| Zigbee repeater |
Yes |
| Smart functions |
| Local control |
Yes |
| Cloud control |
Yes |
| MQTT |
Yes |
| Webhooks |
Yes |
| Scripting |
Yes |
| Scheduling |
20 |
| KNX net/IP |
Yes |
| Compatibility |
| Amazon Alexa |
Yes – on/off |
| Google Home |
Yes – on/off |
| Samsung SmartThings |
Yes – on/off |
| Sensors and protections |
| Internal temperature sensor |
Yes |
| Overheating protection |
Yes |
| Operating conditions |
| Operating temperature |
-20°C to +40°C |
| Humidity |
30%–70% RH |
| Hardware |
| CPU |
ESP-Shelly-C68F |
| Flash memory |
8 MB |
