Description
Sonoff 4CH R3 WiFi smart relay, 4 channels, independent control, Alexa / Google Home compatible
The Sonoff 4CH R3 is a wireless smart relay with 4 independent channels, ideal for controlling several electrical devices at the same time. It offers full support for smart automations, voice control and integration into the eWeLink app, making it perfect for lighting, fans, household appliances and other equipment.
3 flexible operating modes
Control each channel according to your needs:
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Self-locking mode: each channel can be switched on/off individually and stays in that state until the next command
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Interlock mode: activating one channel automatically deactivates the others – ideal for alternating devices
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Inching mode: the channel switches on for a short preset time, then switches off automatically (e.g. 0,5s / 1s)
Remote control via eWeLink
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Free app for Android and iOS
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Individual control of each of the 4 channels
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Scheduled automations, scenes and sharing with other users
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Compatible with Amazon Alexa, Google Assistant and IFTTT for voice control
Versatile mounting and wide compatibility
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Compatible with a wide range of electrical equipment: lighting, fans, household appliances, pumps, etc.
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Ideal for distribution boards, electrical panels or installation in control systems
Built for safety
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Housing made of flame-retardant PC V0 material, resistant to high temperatures
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Durable and reliable design for intensive use
Practical use cases
- Used to control a garage door or an electric roller shutter, with open/close commands directly from the app.
- Mounted in an electrical panel to independently control several circuits (lights, sockets, equipment) from a single app.
- Integrated with an existing physical button to keep manual control, in parallel with scheduled smart automations.
Technical specifications:
| Model | Sonoff 4CH R3 (4CHR3) |
| Supply voltage | 100–240V AC, 50/60Hz |
| Protocol | WiFi 802.11 b/g/n, 2.4GHz |
| Channels | 4 (independent) |
| Load | 10A/channel, total 16A |
| Operating modes | Self-locking, Interlock, Inching |
| Dimensions | 145 x 90 x 34 mm |
| Operating temperature | -10C ~ 40C |
| Housing material | Flame-retardant PC V0 |
| Mounting | DIN rail |
| Compatibility | eWeLink, Amazon Alexa, Google Home (Google Assistant), IFTTT |
Control four devices from a single module and create smart scenes for your home or office with the Sonoff 4CH R3 – power, flexibility and safety in one smart relay!
The 4CHR3 is the ideal choice for anyone who needs smart control of several circuits at once, from roller shutters and electric gates to zoned lighting.
