Shelly i4 Gen3
🔧 Key Features
- Device type: Smart Wi-Fi switch input (not a relay, but a controller)
- Inputs: Supports 4 separate inputs, each can trigger different actions or automations
- Connectivity:
Wi-Fi (remote access from anywhere)
Bluetooth (easy setup and pairing)
- Integration: Works with Shelly Cloud, HTTP, MQTT, and smart home platforms (Google, Alexa)
- Compact design: Fits behind standard electrical wall switches or sockets
- Improved hardware: Faster processor and more memory compared to previous generation
- Remote monitoring: Can show status and control actions of connected devices from anywhere
🔍 Smart hint
- Scene control: Use it to trigger multiple smart home actions (e.g., one button for lights, another for blinds).
Retrofit friendly: Because of its small size, it can be installed behind existing switches without major rewiring.
Automation flexibility: Combine with other Shelly relays/sensors for complex scenarios (e.g., motion sensor + i4 triggers lights + heating).
Cloud & local control: Works both with Shelly Cloud and local MQTT/HTTP for advanced users.
⚠️ Warnings
- Not a relay: It does not directly switch power loads; it only sends input signals.
- Installation safety: Must be installed by a qualified electrician to avoid wiring mistakes.
- Wi-Fi dependency: Remote control requires stable Wi-Fi; without it, only local triggers work.
- Compatibility check: Ensure your automation platform supports Shelly i4 Gen3 before purchase.
📦 What’s Included
- Shelly i4 Gen3 device
- Quick start guide / instructions
- Standard packaging (no external relays or sensors included — it’s an input-only device)