A Wi‑Fi smart switch designed to bring compact, reliable control to household wiring and sensors. Home installers and DIYers will welcome the small footprint and wide compatibility of SONOFF MINIR4 Smart Switch. Is detach relay logic combined with eWeLink gateway functionality the right match for your setup?
⚡ At a Glance
- • Switching Reliability: Detach relay separates relay and external switch states for predictable behaviour
- • Best for: Retrofits and compact switch-box installations requiring flexible control options
- • Not ideal for: Installations that require built-in battery backup or full power monitoring
Ultra-compact Wi‑Fi relay with detach-relay operation and broad external switch compatibility. eWeLink-Remote gateway adds local remote controllers and device-sharing features.
Space-saving installation – Thanks to ultra-compact dimensions
Measured at 39.5 x 33 x 16.8 mm, the unit is about 60% smaller than MINIR3 and 40% smaller than MINIR2, allowing installation inside most standard switch boxes. Reduced volume frees room for wiring and tidy connections.
Easier retrofits in crowded back boxes and cleaner wiring runs. Neat installation reduces the need to rework wall plates or housings.
Predictable manual control – With detach relay mode
Detach relay mode separates the state of external switches from the internal relay, so mechanical switch operations do not change the relay state. External switch and relay logic remain independent.
Manual buttons keep working exactly as expected while scheduled or remote actions control the relay. Ideal for mixed manual/automated lighting arrangements.
Flexible integration and local control – With eWeLink gateway and wide compatibility
Compatibility includes Alexa, Google Home, eWeLink App & Web and IFTTT, while eWeLink-Remote lets R5 and S‑MATE act as local sub-device controllers via the eWeLink-Remote signal. External switch support covers momentary, door-exit, SPDT, latching and dry-contact sensors.
Remote control, voice commands and smart schedules fit most smart-home setups, and local remotes add resilience. User reports note reliable integration with Alexa and Home Assistant.
✨ The 4 Key Reasons for SONOFF MINIR4 Smart Switch
- Ultra-compact casing - Fits inside most standard switch boxes with room for wiring
- Detach relay mode - Prevents manual switch changes from altering relay state unexpectedly
- Wide external switch support - Works with momentary, SPDT, latching and dry-contact sensors
- eWeLink-Remote gateway - Allows R5 and S-MATE local control and device sharing
📋 Technical Details at a Glance
- Category: Wi‑Fi Smart Switch
- Model: MINIR4
- Brand: SONOFF
- Size: 39.5 x 33 x 16.8 mm
- Installation: Fits inside switch box for compact retrofits
❓ Frequently Asked Questions
Q: Can the MINIR4 be controlled by voice assistants?
A: Yes, compatibility with Alexa and Google Home is specified, enabling voice control through those platforms.
Q: Will manual wall switches still work after installation?
A: Yes, detach relay mode separates external switch and relay states so manual switches operate without changing the relay state.
Q: Can the MINIR4 accept different types of external switches or sensors?
A: Yes, it supports momentary switches, door-exit switches, SPDT switches, latching switches and dry-contact sensors.
🏆 Our Verdict
Ideal for homeowners and installers needing a compact, dependable smart relay for retrofits. Detach relay logic combined with broad external switch compatibility and eWeLink gateway functions makes it uniquely suitable for mixed manual and automated setups. The small form factor and flexible integrations deliver ongoing convenience and reduced installation hassle over time.
