Smart Relay Sonoff Basic (R4) Wi-Fi, Bluetooth
Description
Sonoff Basic R4 WiFi + Bluetooth smart relay, app control and eWeLink-Remote, 230V, white
TheSonoff Basic R4 is the modernised version of the popular Sonoff Basic relay, designed for simple and efficient remote control of electrical appliances. With WiFi + Bluetooth support, extended compatibility with eWeLink-Remote wireless remote controls and a compact design, it is the ideal solution for simple home automation.
✔️ Smart control for any electrical appliance
Remotely control connected devices - fans, lamps, pumps, appliances - directly from the eWeLink app (Android/iOS) without the need for a hub.
WiFi + Bluetooth connectivity
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Quick Bluetooth connection on first installation
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Support for eWeLink-Remote: compatible with S-MATE / S-MATE2 and Sonoff R5 wireless modules - add local controls without cables
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Stable and fast control via 2.4 GHz WiFi network
🔁 Automation and scheduling
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Programmable on/off at fixed or repeating times
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Countdown timer with countdown and cycle function
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Automatic switch-off after preset interval
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Pulse mode - energises the relay for a short time (e.g. 0.5s or 1s)
🧠 Smart scenarios and sharing
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Create SmartControl scenarios with other Sonoff or SmartWise devices
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Example: switch on a Sonoff S26 outlet based on the temperature read by a Sonoff TH relay
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Provide access to other family members for shared control
🧱 Simple mounting, compact design
Powered directly from 230V AC and installs easily into customised cans, junction boxes or enclosures for DIY projects.
❗ Important:
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No temperature/humiditysensor input - no external probes can be connected
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For temperature or humidity based automation, choose the Sonoff TH range
🗣️ Extended compatibility
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Voice control via Amazon Alexa, Google Assistant and Google Nest
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Full integration with eWeLink app
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Compatible with all Sonoff and SmartWise devices
📐 Technical Specifications:
| Feature | Specification |
|---|---|
| Model | Sonoff Basic R4 |
| Power | 100-240V AC, 50/60Hz |
| Maximum load | 10A |
| Connectivity | WiFi 2.4 GHz + Bluetooth |
| Compatibility | eWeLink, Alexa, Google Assistant |
| Local control | eWeLink-Remote support (S-MATE, R5) |
| Pulse mode | Yes (configurable) |
| Automations | Timer, scenarios, SmartControl |
| Housing material | PC V0 flame retardant |
| Dimensions | Compact (Basic standard) |
Sonoff Basic R4 - an affordable, safe and smart solution for fast automation of electrical devices in any home!