Shelly Pro 2 DIN Rail Wi-Fi Smart Relay 2-Channel 16A per Channel
The Shelly Pro 2 is a professional-grade 2-channel DIN rail mountable smart relay switch designed for comprehensive home and facility automation. With Wi-Fi, Ethernet, and Bluetooth connectivity, the Pro 2 offers maximum flexibility and reliability for residential and commercial installations. Supporting 16A per channel (25A total), this relay features potential-free dry contacts for high-voltage flexibility, making it perfect for controlling lights, appliances, motorized valves, and more directly from your breaker box.
Key Features
-
Dual-Channel Control: Independently control two separate electrical loads with 16A per channel capacity
-
Triple Connectivity: Wi-Fi 802.11 b/g/n (2.4 GHz), Ethernet LAN (RJ45), and Bluetooth BLE 4.2 for maximum reliability
-
DIN Rail Installation: Professional mounting solution for breaker boxes and electrical panels
-
No Hub Required: Works standalone or integrates with popular platforms like Home Assistant, Alexa, and Google Home
-
Advanced Scripting: Supports mJS scripting for custom automation scenes and complex logic
-
Enhanced Safety: Built-in temperature monitoring, overpower protection, and overvoltage protection
Professional Installation & Flexibility
Designed for installation inside the breaker box, the Shelly Pro 2 delivers full smart automation with no additional wiring. The device's dry contact outputs provide exceptional voltage flexibility, supporting both high and low voltage applications. Whether you're automating office lighting, controlling motorized valves in a water distribution system, or managing heavy appliances, the Pro 2 adapts to your needs.
Smart Scheduling & Automation
Create up to 20 scheduled actions based on daily or weekly routines, with no external hub required. Set lights to switch off automatically after business hours, control heating based on occupancy, or automate motorized awnings based on weather conditions. The Pro 2's Sunset/Sunrise automation adjusts timing dynamically throughout the year.
Advanced Safety Features
The Shelly Pro 2 monitors internal temperature every 100 milliseconds. In case of unsafe temperature levels, rapid temperature increase, overpower, or overvoltage conditions, the device automatically switches off outputs and sends notifications to protect your electrical system and connected equipment.
Platform Compatibility
Integrate seamlessly with Home Assistant, Amazon Alexa, Google Home, MQTT, HTTP REST API, Webhooks, and other popular home automation platforms. Control via the free Shelly Smart Control app for iOS and Android, or access the embedded web interface for advanced configuration.
Connectivity Options
-
Wi-Fi: 802.11 b/g/n (2.4 GHz), range up to 30m indoors / 50m outdoors
-
Ethernet: RJ45 LAN port for wired reliability
-
Bluetooth: BLE 4.2, range up to 10m indoors / 30m outdoors
-
Protocols: MQTT, HTTP/HTTPS REST API, WebSockets, Webhooks
What's in the Box
- Shelly Pro 2 relay module
- Quick start guide
Full Specifications
Electrical
| Power Supply |
110-240V AC, 50/60 Hz |
| Power Consumption |
< 3W |
| Max Load per Channel |
16A |
| Total Max Load |
25A |
| Max Switching Voltage |
240V AC |
| Output Type |
Potential-free contacts (dry contacts) |
| Neutral Required |
Yes |
Connectivity
| Wi-Fi Protocol |
802.11 b/g/n (2.4 GHz) |
| Wi-Fi Range |
Up to 30m / 100ft indoors, 50m / 160ft outdoors |
| Bluetooth |
BLE 4.2 |
| Bluetooth Range |
Up to 10m / 33ft indoors, 30m / 100ft outdoors |
| Ethernet |
RJ45 LAN port |
| RF Band |
2400 - 2495 MHz |
| Max RF Power |
<20 dBm |
Physical
| Dimensions (H×W×D) |
94 × 19 × 69 mm (3.70 × 0.75 × 2.71 in) |
| Weight |
76g (2.68 oz) |
| Mounting |
DIN rail (2 modules) |
| Shell Material |
Plastic |
| Color |
Gray |
| Conductor Cross Section |
0.5 to 2.5 mm² / 20 to 14 AWG (green connectors), 0.5 to 1.5 mm² / 20 to 16 AWG (blue connectors) |
| Screw Terminals Max Torque |
0.4 Nm / 3.54 lbin |
Environmental
| Operating Temperature |
-20°C to 40°C (-5°F to 105°F) |
| Humidity |
30% to 70% RH |
| Max Altitude |
2000m / 6562ft |
Features & Protection
| Temperature Sensor |
Yes (internal, monitored every 100ms) |
| Overpower Protection |
Yes |
| Overvoltage Protection |
Yes |
| Temperature Protection |
Yes |
| Scripting Support |
mJS (JavaScript) |
| Scheduled Actions |
Up to 20 |
| Sunset/Sunrise Automation |
Yes |
| TLS Security |
TLS 1.2 |
| Warranty |
5 years |
Specifications are sourced from the manufacturer product page and may be updated.
