Shelly Pro 3

Shelly Pro 3 — 3-Channel Professional WiFi Relay with DIN Rail and Ethernet

The Shelly Pro 3 (model SPSW-303XE16EU) is a 3-channel professional smart switch with dry contacts, designed for DIN rail mounting. It combines WiFi, Ethernet (LAN), and Bluetooth BLE 4.2 connectivity for maximum reliability in professional installations. Ideal for controlling three independent circuits. Gen2 Pro series. No hub or subscriptions needed.

Technical Specifications — Shelly Pro 3

• Model: SPSW-303XE16EU
• Connectivity: WiFi 802.11 b/g/n (2.4 GHz) + Ethernet (RJ45) + Bluetooth BLE 4.2
• Power Supply: 110 – 240V AC, 50/60 Hz
• Maximum Load: 16A per channel (dry contacts)
• Channels: 3 independent relay outputs
• Energy Metering: No
• Mounting: DIN Rail (3 modules)
• Operating Temperature: -20 to +40°C
• Certifications: CE, RoHS
• Protocols: MQTT, HTTP REST API, WebSockets, Webhooks, Scripting (mJS)

Key Features

• 3 independent channels with dry contacts: control three circuits simultaneously
• Dual WiFi + Ethernet connectivity for maximum reliability in professional networks
• Bluetooth BLE 4.2 for initial setup without WiFi network access
• Integrated web interface for local control and monitoring
• Integrated over-temperature protection
• OTA firmware updates

Compatible with

• Home Assistant (local, no cloud)
• Amazon Alexa
• Google Home
• MQTT, HTTP REST API, mJS Scripting

Use Cases

• Control of three lighting zones from a single DIN module
• Automation of circuits in offices, hotels, and commercial spaces
• Professional installations with high availability thanks to Ethernet connection
• Control of appliances and high-consumption loads in electrical panels

Official Shelly distribution. Shipped from Spain. Official Shelly warranty.