Description
The main difference between the Shelly Wave Pro 2 and Shelly Wave Pro 3 is that the latter can control 3 independent electrical circuits.
The Shelly Wave Pro 3 is the Z-Wave counterpart to the standard Shelly Pro 3. It is a professional-grade, 3-channel DIN-rail mountable switch designed for the Z-Wave ecosystem.
Unlike the Wi-Fi-based Pro 3, this device uses the Z-Wave 800 Series protocol, making it a specialized choice for installations that require a dedicated mesh network for maximum reliability and range.
Key Features
- 3 Independent Channels: It can control three separate electrical circuits. Each channel supports up to 16A, with a total device capacity of 48A.
- Dry Contacts (Potential-Free): The relays are isolated from the device’s power supply. This allows you to switch different voltages (e.g., control 24V irrigation valves while the Shelly is powered by 230V AC) or even control circuits across three different phases.
- Z-Wave Long Range (LR): In “LR” mode, it can communicate with a compatible gateway at distances up to 1 km (line of sight), which is perfect for large estates, agricultural sites, or industrial facilities.
- Z-Wave 800 Series: Built on the latest Z-Wave chip, offering the highest level of security (S2 Authenticated) and faster response times compared to older generations.
- DIN-Rail Design: Specifically built to fit inside professional electrical panels (3 modules wide).
Technical Specifications
| Feature | Specification |
| Protocol | Z-Wave 800 Series (Sub-GHz frequency) |
| Channels | 3 Independent Channels |
| Max Load | 16A per channel / 48A total |
| Relay Type | Dry Contacts (Potential-free) |
| Power Supply | 110–240V AC |
| Power Monitoring | No (It is a switch only; use Pro 3EM for metering) |
| Safety | Overheat protection and flame-retardant (V-0) housing |
| Connectivity | Z-Wave mesh + Z-Wave Long Range |
Shelly Pro 3 vs. Wave Pro 3
The choice between these two depends entirely on your network infrastructure:
- Shelly Pro 3: Uses Wi-Fi and LAN (Ethernet). It is easier to set up if you don’t have a hub, as it connects directly to your router.
- Shelly Wave Pro 3: Uses Z-Wave. It requires a Z-Wave Gateway (like Home Assistant with a Z-Wave stick, Hubitat, or a Fibaro hub). It is the better choice for large-scale professional installs to avoid “clogging” the Wi-Fi network.
Ideal Use Cases
- 3-Phase Power Control: Managing loads across all three phases of a building from a single point.
- Commercial Lighting: Automating three separate lighting banks in an office or retail store.
- Large Estates: Using the Long Range capability to control gate motors or borehole pumps located far from the main house.
- Industrial Automation: Triggering multiple heavy-duty contactors for fans, pumps, or HVAC systems.
Note: Whilst the Shelly configuration is mostly DIY, any electrical work must be done by a registered electrical contractor and we recommend Straton Electrical.
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