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Sonoff Dual (R3) 2-gang WiFi smart relay with power meter and roller shutter mode

Sonoff Dual R3 is a 2-gang smart switch relay product version, with power metering feature in a small size. A Wi-Fi smart dual relay switch module that can be installed in wall electric boxes, attached on DIN rail. It features input for external switches and supports roller shutter control.

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Factory SKU ID:
Supported protocols:
eWeLink-Remote (hub), Wi-Fi
in stock (30+ pcs)

Sonoff Dual R3 is a brand new Sonoff product release in Q2 2021, a 2-gang smart switch relay with power metering feature. DUALR3 is a Wi-Fi smart dual relay switch module. which can be installed in larger wall sockets (80mm diameter is suggested). It can work together with any standard switches to make it a smart switch for wireless remote control with mobile devices or voice command. Unifying home appliances into an integrated wireless network to make them communicate with one another which is convenient to manage and control, including lights, home appliances and motorized facilities like roller shutters, window shades, blinds etc.

Its holder adapter can be attached to wall with screws or used to fix it on a DIN-rail of an electric box.

It’s TUV certified that provides a reliable quantity and advanced safety, without having to worry about the potential risk of fire and overheat.

Three working modes available. DUALR3 comes with switch mode, motor mode and meter mode. One of the typical features is roller shutter and window shades smart control in the motor mode. The switch module offers the ultimate flexibility for your roller shutter and window shades by app remote control and scheduling timed events no matter whether you are at home or away.

Double two-way control. The double relay switch module distributes the load to two inputs compared to the simple relay, with this working mechanism lets you have two-way control for two devices independently. Power metering. What’s more, the module has an energy monitoring function that can be used to determine the exact energy consumption of the connected devices. In this mode, the load of electrical appliances connected with DUALR3 will always remain on and its relay status will not be changed on the app or the extra switch, used for power tracking and metering only.

Powerful compatibility. In eWeLink app, you can manage your roller shutter to make it open, close and even stop at a certain position that you want. Designed to work with more switch types like the momentary switch, rocker switch, ON/OFF switch, dual momentary switch and ON/OFF/ON switch and then you can control your home appliances or motorized devices via the extra wall switch.

Siri voice control. By setting up Siri shortcut in eWeLink that allows you to control your curtains with your voice. Even you can create a smart scene to make it keep linkage with other devices in your home, for example, ask Siri to close the curtain to trigger L1 Lite light strip on for an immersive movie night at home.


  • Gang: 2
  • Power Supply: 100-240V AC
  • Resistive Load: 3300W/15A/Total, 2200W/10A/Gang
  • Motor Load: 10-240W/1A
  • Max Power:  3300W(total) / 2200W(1 gang), in case of motors: 10W-240W load is supported.
  • Color: White
  • DIN-rail compatible - its adapter (part of the product) can be plugged to an electric box with DIN-rail.
  • WiFi standards: 802.11 b/g/n
  • Security Mechanism: WPA-PSK/WPA2-PSK
  • Humidity: 5%-95%RH, Non-condensing
  • Enclosure Material: Fire-retardant ABS V0
  • Operating Temperature: -10ºC - 40ºC
  • Product Dimensions: 54*49*24mm,
    (Note: it does not fit inside a 65mm EU standard wall socket)


Product features:

  • Remote ON / OFF – Anytime, anywhere, from now on you can turn all your appliances on and off remotely.
  • Mobil App – free iOS and Android mobil App: eWeLink
  • Sync status – Check actual relay status (turned ON or OFF) with the mobile App
  • Timer – Various timer functions: single time, scheduled turn on/off, countdown/timer.
  • Share control – Control the device together with your family
  • Group control – Turn ON / OFF a gang of devices with one tap
  • Smart scene – Triggered ON/OFF by temp, hum or other environmental sensors
  • Compatibility – Works perfectly with Amazon Alexa, Google Assistant, IFTTT and Google Nest

Product type:
2-gang smart WiFi relay, with roller shutter feature
Device power supply:
110V-240V AC
DIN rail compatible:
Operating temperature range:
-10℃ – 40℃
Dimmer feature:
Power consumption metering:
Number of gangs / circuits:
Rated voltage (output):
100V-240V AC
Rated current (output):
2200W/10A per gang, total 3300W/15A. Motor load: 10-240W (1A)
Physical on/off button on device:
External switch supported:
yes, 2 switch inputs (230V live)
2-way or 3-way switching:
Interlock mode:
yes, in roller shutter / motor) mode
Wi-Fi standards:
802.11 b/g/n (2.4GHz)
RF transmitter / receiver:
Bluetooth pairing with phone
Controllable from internet:
Manufacturer smartphone app:
yes, free app: eWeLink (Android, iOS)
Voice control:
Amazon Alexa and Google Assistant compatible
Cloud mode:
default mode is connecting to the eWeLink cloud
Schedulers, timers:
yes (single time, schedule, timer/countdown)
80 g/pcs
Package offers
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Sonoff Dual (R3) 2-gang WiFi smart relay with power meter and roller shutter mode
Sonoff Dual (R3) 2-gang WiFi smart relay with power meter and roller shutter mode