z For SONOFF MINIR4 Mini Extreme Wireless Smart Switch for Alexa Compatible Smart Homes
Smart Electronics
“The SONOFF MINIR4 is an ultra-compact Wi-Fi smart switch with an ESP32 chip and detach relay mode, easily fitting small wall boxes. It offers flexible switch support and gateway functionality. Weaknesses include soldering for custom firmware, depth requirements with ERBS, and limited to resistive loads under 10A.”
- —
Smallest size fits easily behind any standard wall switch.
electronics-lab.comthe smallest one out there.
- —
Detach relay mode enables independent control of relay and external switch.
electronics-lab.comseparates the states of the relay from the states of the external switches.
- —
Built-in eWeLink-Remote gateway pairs sub-devices without extra hub.
sonoff.techworks as an eWeLink-Remote gateway for sub-device pairing.
- —
Supports various switch types: momentary, latching, SPDT, dry contact sensors.
sonoff.techsupports multiple switch types, such as momentary switches, door exit switches, SPDT switches, latching switches.
- —
Custom firmware requires disassembly and moderate soldering skills.
devices.esphome.ioProgramming firmware need disassembly (easy) and moderate soldering skills.
- —
Vcc programming pad has protective coating that needs scratching before soldering.
devices.esphome.ioVcc pad is covered with some protecting coating - needs to be scratched.
- —
When used with ERBS, wall box depth must exceed 30mm.
sonoff.techthe depth of the wall mounting box must be greater than 30mm.
- —
Not recommended for inductive loads exceeding rated power.
sonoff.techAvoid connecting inductive loads that exceed the rated power.