⚡ SONOFF DUALR3 — Dual Relay Smart Switch with Power Metering & Motor Control
The SONOFF DUALR3 is a dual-channel WiFi smart relay module with three working modes: Switch Mode (control two loads independently), Motor Mode (control motorised curtains, roller shutters, and blinds), and Meter Mode (real-time power monitoring). Up to 15A total (10A per gang) with built-in power metering per channel. Installs behind your existing wall switch — fits on a 35mm DIN rail or inside a deep wall box.
⚡ Key Features
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3 Working Modes:
• Switch Mode — two independent relay channels; control two separate lights, appliances, or circuits
• Motor Mode — controls a 4-wire AC tubular motor (forward/reverse/stop); for motorised curtains, roller shutters, blinds, and awnings
• Meter Mode — relay stays on while monitoring real-time voltage, current, power, and energy consumption per channel - 15A Total / 10A per Gang — handles resistive loads up to 2,200W per channel (3,300W total at 230V)
- Power Metering — measures voltage, current, and power per channel independently; track energy consumption in the eWeLink app
- Motor Control with Calibration — in motor mode, calibrate the travel distance of your roller shutter or curtain; then control open %, stop at any position, and set schedules
- 6 External Switch Types — supports momentary, rocker, ON/OFF, SPDT, dual momentary, and ON/OFF/ON switches; works with your existing wall switch
- DIN Rail Compatible — fits a standard 35mm DIN rail for DB board installation, or mounts behind a deep wall switch box
- eWeLink App + Voice — WiFi 2.4GHz, eWeLink app (iOS/Android), Amazon Alexa, Google Assistant, Siri Shortcuts
- LAN Control — works locally on your network without internet (via eWeLink LAN mode)
- TÜV Certified — overload protection, flame-retardant housing (PC V0)
🏠 What Can You Control?
Roller Shutters & Blinds
In Motor Mode, connect to a 4-wire AC tubular motor. Control open/close/stop, set percentage positions, and schedule sunrise/sunset automations. Calibrate travel distance for precise control.
Two Independent Lights
In Switch Mode, each channel controls a separate light or appliance. Replace a 2-gang switch with smart control — app, voice, and physical switch all work.
Energy Monitoring
In Meter Mode, monitor how much power each connected device is consuming in real-time. Track your geyser, pool pump, or any load — see voltage, current, watts, and kWh in the app.
Awnings & Canopies
Any 4-wire AC motor for awnings, patio canopies, or projection screens. Motor Mode handles forward/reverse/stop with interlock protection.
Motor Mode works with 4-wire AC tubular motors (Neutral, Forward, Reverse, Ground). These are standard for roller shutters and blinds. It does NOT work with 3-wire motors that have a built-in receiver, or DC motors. The motor must have a travel limit function for calibration to work. Motor load: 10–240W, max 1A.
📋 Technical Specifications
| Model | DUALR3 |
| Working Modes | Switch / Motor / Meter |
| Input | 100–240V AC 50/60Hz |
| Output | 100–240V AC 50/60Hz |
| Max Load (Resistive) | 10A per gang / 15A total (2,200W/gang, 3,300W total) |
| Motor Load | 10–240W / 1A max |
| Power Metering | Yes (voltage, current, power, kWh per channel) |
| WiFi | IEEE 802.11 b/g/n 2.4GHz |
| External Switch | 6 types (momentary, rocker, ON/OFF, SPDT, dual momentary, ON/OFF/ON) |
| DIN Rail | 35mm compatible |
| Dimensions | 54 × 49 × 24 mm |
| Weight | 40 g |
| Material | PC V0 (flame retardant) |
| App | eWeLink (iOS / Android) |
| Voice Control | Alexa, Google Assistant, Siri Shortcuts |
| LAN Control | Yes |
| Certifications | TÜV, CE, FCC, RoHS |
❓ Frequently Asked Questions
Can I use it for roller shutters / blinds?
Does it need a neutral wire?
Can I use it just as a 2-gang light switch?
How does it compare to the MINI-RBS roller shutter switch?
Does it work with Home Assistant?
🤝 Need Help? We’re Here for You!
Visit Us
8 Wildebraam Street
Weltevreden Park, Roodepoort
Gauteng, 1709
Switch. Motor. Meter. One Module Does It All.
SONOFF DUALR3 — dual relay · power metering · roller shutter control · 15A · R299
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