Shelly smart home devices have significantly evolved over three generations, with each bringing improvements in performance, connectivity, and features. Here's a brief overview of the key differences between Shelly Gen 1, Gen 2, and Gen 3 devices.
1. Shelly Gen 1:
- Wi-Fi connectivity (2.4 GHz)
- Basic processing power and memory
- Basic energy monitoring in select models
- Support for MQTT, CoAP, and HTTP webhooks
2. Shelly Gen 2 (Plus Series, Pro Series):
- Wi-Fi connectivity
- More powerful processors and larger memory (up to 4MB Flash, 8MB Flash for PRO devices)
- Bluetooth support for easier setup
- Bluetooth Gateway support for BLU devices (except Shelly BLU TRV, Shelly BLU Gateway Gen 3 required)
- Scripting capabilities for advanced automation
- Enhanced energy monitoring in some devices
- Support for MQTTS and HTTP/HTTPS webhooks
- Improved hardware compared to Gen 1
- Simultaneous MQTT and Cloud support
- KVS (Key-Value Store) for extended functionality
- Timer loop (Auto ON / Auto OFF at the same time)
- Range Extender
- Simultaneous AP (Access Point) and Wi-Fi connection
- Virtual components support (Pro only)
- BTHome support (Pro only)
- Ethernet (Pro only)
3. Shelly Gen 3:
- Shelly chip for optimal performance
- Largest memory capacity (8MB Flash, 256KB RAM)
- Bluetooth support for easy setups
- Bluetooth Gateway support for BLU devices (except Shelly BLU TRV, Shelly BLU Gateway Gen 3 required)
- Enhanced scripting capabilities for advanced automation
- Advanced energy monitoring, safety features, and Matter protocol support in some models ( Shelly Plug S Gen 3 OCT 2024 YTD )
- Best suited for complex automation and future-proof setups
- Support for virtual components
- KNX support in specific devices
- Support for HTTP/HTTPS webhooks and MQTTS
- Improved hardware compared to Gen 2
- Simultaneous MQTT and Cloud support
- KVS
- Timer loop (Auto ON / Auto OFF at the same time)
- BTHome support
- Range Extender
- Simultaneous AP and Wi-Fi connection
Feature | Shelly Gen 1 | Shelly Gen 2 (Plus/Pro Series) | Shelly Gen 3 |
|---|---|---|---|
Wi-Fi Connectivity | 2.4 GHz Wi-Fi | 2.4 GHz Wi-Fi | 2.4 GHz Wi-Fi |
Processing Power | Basic | More powerful processors | Shelly chip for optimal performance |
Memory | Basic memory | Larger memory (up to 4MB Flash; 8MB Flash for PRO devices) | Largest memory capacity (8MB Flash, 256KB RAM) |
Bluetooth Support | No | Bluetooth support for easier setup | Bluetooth support for easy setup |
Scripting Capabilities | No | Enhanced scripting capabilities for advanced automation | Advanced scripting and automation capabilities |
Energy Monitoring | Basic (in select models) | Enhanced energy monitoring in some devices | Advanced energy monitoring, safety features, and Matter protocol support in some models |
Device Control | MQTT, CoAP, HTTP webhooks | MQTTS, HTTP/HTTPS webhooks, Simultaneous MQTT & Cloud support | MQTTS, HTTP/HTTPS webhooks, Simultaneous MQTT & Cloud support |
Virtual Components | No | Available (Pro only) | Supported |
KNX Support | No | Available in specific devices (Pro only) | Available in specific devices |
Bluetooth Gateway Support | No | Supported for BLU devices (except Shelly BLU TRV; Shelly BLU Gateway Gen 3 required) | Supported for BLU devices (except Shelly BLU TRV; Shelly BLU Gateway Gen 3 required) |
KVS (Key-Value Store) | No | Yes | Yes |
Timer Loop | No | Auto ON / Auto OFF at the same time | Auto ON / Auto OFF at the same time |
Range Extender | No | Yes | Yes |
Simultaneous AP & Wi-Fi | No | Yes | Yes |
Ethernet Support | No | Yes (Pro only) | Yes (Pro only) |
Best Use Case | Basic home automation tasks | More powerful automation and scripting, improved hardware | Most advanced features, ideal for complex automation and future-proof setups |
Additional Protocol Support | No | BTHome, Virtual Components (Pro only), Simultaneous MQTT & Cloud, KNX | BTHome, KNX, Matter Protocol, Virtual Components, Simultaneous MQTT & Cloud |