Description
Shelly 1 is a compact Wi-Fi relay with dry contacts designed for switching AC or DC loads and retrofit control of lights, fans, and other circuits.
Overview
Features
- Dry-contact relay for switching AC or DC loads
- Supports 110-240 VAC or 12-60 VDC power supply
- Wi-Fi connectivity (802.11 b/g/n)
- Compact size for wall box installations
- Low power consumption (< 1 W)
- Schedules and webhooks supported by firmware
Specifications
| Price | Not specified in sources |
|---|---|
| Protocol | Wi-Fi 802.11 b/g/n |
| Hub Required | No (connects directly to Wi-Fi) |
| Power | 110-240 VAC / 12-60 VDC |
| Cloud Dependency | Not specified in sources |
| HA Integration | Home Assistant Shelly integration |
| Voice Control | Not specified in sources |
| Dimensions | 36 x 41 x 17 mm |
| Warranty | Not specified in sources |
Home Assistant Integration
Integration Method: Home Assistant Shelly integration
- Requirements: Shelly device on the same network; integration discovered or added in HA
- Entities: Relay exposed as switch (or light if configured)
- Setup: Settings > Devices & Services > Add Integration > Shelly
- Notes: HA supports Shelly device events and entity naming for Gen 1 devices
Practical Considerations
- Wiring: Requires a suitable neutral and proper line/load wiring
- Load limits: 16 A AC / 10 A DC switching limits
- Placement: Compact size fits most wall boxes
- Wi-Fi: Needs stable 2.4 GHz Wi-Fi coverage
Scores
| Category | Score | Rationale |
|---|---|---|
| Features | ★★★★☆ | Solid relay features with dry contacts and flexible power |
| Interoperability | ★★★★☆ | Works well with HA via official integration |
| Setup Ease | ★★★☆☆ | Requires basic electrical wiring comfort |
| Cloud Dependency | ★★★☆☆ | Local control possible; cloud not specified |
| Vendor Trust | ★★★★☆ | Well-known smart relay vendor |
| Overall | ★★★★☆ | Reliable relay choice for retrofits |
References
| Official | Shelly 1 specs |
|---|---|
| Home Assistant | Shelly integration |
My Implementation
Used as an in-wall relay to control a single load from Home Assistant while keeping a physical switch for local control.
Device Score Summary
| Category | Score | Rationale |
|---|---|---|
| Features | ★★★★☆ | Solid relay features with dry contacts and flexible power |
| Interoperability | ★★★★☆ | Works well with HA via official integration |
| Setup Ease | ★★★☆☆ | Requires basic electrical wiring comfort |
| Cloud Dependency | ★★★☆☆ | Local control possible; cloud not specified |
| Vendor Trust | ★★★★☆ | Well-known smart relay vendor |
| Overall | ★★★★☆ | Reliable relay choice for retrofits |
★★★★★ Exceptional | ★★★★☆ Very Good | ★★★☆☆ Good Enough | ★★☆☆☆ Frustrating | ★☆☆☆☆ Avoid