MINIR4 Smart Switch Module — Compact, Flexible, Reliable Key benefits Small footprint fits tight spaces: 40 percent smaller than the previous MINIR2 model, designed to be installed inside a variety of mounting boxes, including the smallest European standard boxes. Convert traditional switches to smart control: hidden installation behind existing switches gives app, remote, sensor, and external switch control without replacing wall plates. Flexible external switch support: compatible with momentary switches, door exit switches, SPDT switches, latching switches, and dry contact sensors. Independent relay behavior with Detach Relay mode: external switch actions and relay state are separated so pressing a physical button will not change the relay state used by app or automation. Local remote gateway via eWeLinkRemote: once paired, MINIR4 accepts local control signals from R5 and SMATE devices, allowing them to act as direct remote controllers. Robust performance: built around a performance ESP32 processor for stable dualcore operation and sufficient memory for longterm, reliable use. Poweron delay option: staggered restart after power loss prevents multiple appliances from switching on simultaneously, reducing inrush current and stress on devices. Works with smart scenes and sensors: integrates with motion sensors, door and window sensors, and other automation devices to create contextual or scheduled control. What it does MINIR4 turns existing wiring and switches into a smart control point while staying out of sight. It supports multiple control methods at once: physical switches, remote controllers, local automation signals, and mobile app control. Detach Relay mode ensures that manual switch use can be isolated from relay outputs controlled by automation. The module also functions as a local remote gateway, enabling paired R5 and SMATE devices to control the module without depending on cloud connectivity. Practical applications Retrofit standard wall switches: hide MINIR4 in the wall box behind a regular switch to add app control, scheduling, and automation without changing switch appearance. Secure door or gate control: connect to a door exit switch or dry contact sensor to automate lighting or trigger relays while keeping manual override behavior separate. Corridor or staircase automation: pair with motion sensors and enable delayed poweron to avoid overload after power restoration and to provide smooth automated lighting. Technical highlights and compatibility Model: MINIR4 Supports external controllers: R5 and SMATE via eWeLinkRemote Processor: ESP32 dualcore for responsive and stable operation Supports a wide range of switch types and dry contact sensors Safety and reliability are emphasized in the design and testing process Easy to install, versatile in use, and engineered for dependable operation, MINIR4 is a practical solution for making conventional switches part of a modern smart home setup.