SONOFF MINIR4 Extreme Wi-Fi Smart Switch Module

Ultra-Compact Automation Powered by the ESP32 Chip

Transform traditional wiring into intelligent, network-connected endpoints without the need to overhaul your existing infrastructure. Driven by a high-performance ESP32 dual-core chip, the SONOFF MINIR4 delivers fast execution, robust memory, and rock-solid stability for your automation setups. At 40% smaller than its predecessor, this extreme mini relay module fits seamlessly into the most restrictive mounting boxes, allowing for rapid deployment across any environment.

Key Features

• Super Tiny Form Factor: Measuring just 39.5 x 33 x 16.8 mm, the module easily slots behind traditional switches in standard European, 86-type, or 120-type mounting boxes.

• Detach Relay Mode: Uncouple the state of the physical external switch from the internal relay. Flipping the wall switch won’t drop power to your smart lights or devices, ensuring they remain online and responsive to network commands or custom dashboards.

• Broad External Switch Compatibility: Interfaces flawlessly with momentary switches, door exit switches, standard SPDT (rocker) switches, latching switches, and even dry contact sensors.

• eWeLink-Remote Gateway: Functions as a local hub for sub-devices like the SONOFF R5 or S-MATE, allowing local control via Bluetooth signals without relying entirely on external cloud infrastructure.

• Uncompromising Safety & Hardware Stability: Housed in a PC V0 flame-retardant casing, the unit protects against electrical faults and features a configurable delayed power-on state to prevent damaging high-current spikes after a power outage. Fully certified by TÜV, CE, and FCC.

   

Technical Specifications

Ideal Applications

• Hybrid Lighting Control: Maintain manual functionality via traditional wall switches while retaining full network visibility and control for automated scripts and schedules.

• Reliable Remote Management: Keep critical endpoints safely online, ensuring continuous uptime and responsiveness for centralized management systems.

• Trigger-Based Hardware Integration: Wire in external dry contacts or momentary switches to execute complex, multi-device smart scenes the moment a door opens or a button is pressed.