← Relays & dimmer modules
Shelly
Shelly i4 Gen3
Native integrationLocal control
- Wi-Fi
- Bluetooth
Verified July 2026
Not a relay at all — this is an input-only module with 4 dry-contact terminals for turning an existing wall switch or push-button into an HA scene trigger, without ever switching mains load itself. Handy behind a bank of unused gang-switch positions, or for wiring in a doorbell push as an automation trigger. It still needs mains L+N to power itself even though it isn't switching anything.
Specs
- note
- input/scene-trigger module only — no switched output, no load rating
- inputs
- 4
- relay channels
- 0
- neutral required
- true
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