Description
Sonoff Dual R3 Lite smart WiFi relay, 2 channels, wall box mounting, white
Sonoff Dual R3 Lite is a WiFi relay with 2 independent channels, ideal for remote control of the electrical circuits in your home. It fits easily into a wall box, behind sockets or switches, turning classic installations into smart systems.
Dual, independent control
Controls two separate circuits – whether lights, fans or sockets.
Each channel can be switched on/off individually from the app or through automated scenes.
Control via the eWeLink app
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Remote on/off
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Scheduled or conditional automations
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Manual control, shared with other users
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Compatible with Amazon Alexa and Google Assistant for voice control
Smart automations
Create custom scenes based on schedules or events, directly from the eWeLink app.
You can set automatic actions for each channel separately.
Discreet wall box mounting
Compact design, suitable for mounting in a classic wall box, behind a double switch or a socket.
Safety and stability
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Made of PC V0 flame-retardant material
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Overload and temperature protection
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Stable operation on WiFi 2.4 GHz
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Discreet white casing with a compact profile
Important note:
The Lite version does not offer energy consumption measurement. In addition to ON/OFF switching on 2 channels, it also supports motor mode for motorised roller shutters and blinds (requires calibration).
Practical use cases
- Control of two separate lighting circuits from a double switch, with on/off from the eWeLink app or by voice command.
- Mounted on the DIN rail bracket in an electrical panel, it independently controls two circuits (lights, sockets, fans) from a single app.
- In motor mode, it controls a motorised roller shutter or blind, with opening/closing from the app (requires calibration).
- Wired to the existing switch, it keeps manual control in parallel with the scheduled automations.
Technical specifications:
| Model | Dual R3 Lite (DUALR3 Lite) |
| Supply voltage | 100–240V AC, 50/60Hz |
| Maximum current | 15A total (10A per channel) |
| Number of channels | 2 ON/OFF channels (dual relay), without consumption monitoring (Lite version) |
| Connectivity | WiFi 2.4 GHz, IEEE 802.11 b/g/n |
| External switches | compatible with 6 types (rocker, momentary, SPDT etc.) |
| Compatibility | eWeLink, Amazon Alexa, Google Assistant / Google Home |
| Dimensions | 54 × 49 × 24 mm |
| Housing material | PC V0 (flame-retardant) |
| Mounting | In the wall box, behind the switches; detachable DIN rail bracket |
Quickly turn classic installations into smart solutions with Sonoff Dual R3 Lite – simple, safe and affordable!
