Smart relay Shelly Pro 2 - 2 channels, WiFi, LAN, DIN rail, app control, compatible with Amazon Alexa, Google Assistant and Home Assistant

Shelly Pro 2 extends the concept of a professional DIN rail relay to two independent circuits, controlled separately or together through a single compact device installed in the electrical panel. Each channel offers a dry contact of up to 16A, enough for lighting, switched sockets or small-to-medium power motors, and the two channels can also be configured as a pair to control a roller shutter or electric blind, with interlock protection that prevents both directions being commanded at the same time.

Triple connectivity - Wi-Fi, wired Ethernet and Bluetooth - guarantees stable operation regardless of conditions in the panel, while flexible AC 110-240V or DC 12-24V power supply allows mounting in both conventional installations and low-voltage systems. As a Gen2 Pro device, it works fully locally, without depending on the cloud, and can be controlled through its own web interface, the Shelly app, or integrated into Home Assistant and other platforms via API and MQTT.

A practical example is automating a room with two separate lighting zones or controlling an electric roller shutter: Pro 2 handles both functions from a single module, reducing the number of devices needed in the panel and simplifying the wiring. For integrators and electricians, this means less space taken up and a cleaner installation.

Practical use cases

• Mounted in the electrical panel, it separately controls two lighting circuits in a room, from the app, by voice command or on a schedule.
• Installed on the circuit of a recirculation pump or an electric water heater, it allows remote switching on/off and scheduling of operating hours to save energy.
• Integrated into a home automation system, it can automatically switch off sockets or lighting when the whole family leaves home, based on geolocation from the app.
• Used in an electrical panel to control outdoor lighting, it can be scheduled to switch on automatically at sunset and switch off in the morning.

Technical specifications

Shelly Pro 2 is the right choice when two circuits need to be controlled independently or together, from a single point professionally mounted in the electrical panel.