Smart In Wall Mini Switch (1–4 Gang)

A “Smart In Wall Mini Switch (1–4 Gang)” is a small, Wi-Fi-enabled electrical switch. It can be installed behind an existing wall plate to add smart home functionality to one to four circuits. It allows you to control lights and appliances remotely via a smartphone app or voice assistant like Alexa or Google Assistant. It can also be operated from your manual switch. This type of switch saves space by consolidating control of multiple circuits in one place.

Key Features and Functions

  • Remote Control: Operate your lights and appliances from anywhere using your smartphone via a dedicated app like Smart Life.

  • Voice Control: Integrate with voice assistants like Alexa and Google Assistant for hands-free operation.

  • Multiple Gangs: “1–4 Gang” refers to the number of independent circuits that the switch can control. A 4-gang switch can manage four separate light fixtures or outlets from one device.

  • Manual Control: The switch can still be operated manually using a physical switch, which is often a push button.

  • Scheduling and Automation: Set schedules and timers to automate when your lights or appliances turn on and off.

  • Real-time Status: The app shows the current status of connected devices. So you can see if a light is on or off from anywhere.

  • Easy Installation: It is designed to fit behind your existing wall switch, often requiring only a neutral wire and replacing a traditional switch or its module.

Technical Specifications:

Feature Details
Type Smart WiFi Switch Module
Gangs Available 1 / 2 / 3 / 4
Control Options App, Voice
WiFi Standard 2.4GHz only
Voltage 100–240V AC
Load Capacity 1 Gang: 16A
2 Gang: 5A x 2
3 Gang: 3.3A x 3
4 Gang: 5A x 4
Material Flame Retardant PC
Color Options White
App Compatibility Tuya Smart / Smart Life
Installation Standard 86 Type Wall Box
Voice Assistant Alexa & Google Assistant Compatible
Two-Way Support Yes (via wiring)
Certifications CE / ROHS / FCC

Working Process Of 

The Smart In-Wall Mini Switch is a compact relay module designed to be hidden inside an existing light switch box or electrical canopy. It is intended to transform any standard, non-smart mechanical light switch into a smart, connected device, without requiring you to change the appearance of your existing wall plates.

Step by step working process

Installation and wiring: The mini switch is wired parallel to the mechanical switch inside the wall box. It connects to the main power lines and loads (lights), and a separate set of wires connects to the physical wall switch inputs.

Input registration:

  • Manual control: When the user physically flicks their regular, non-smart wall switch, the state changes (e.g., from on to off). This sends a low-voltage trigger signal to the external input terminals of the mini switch.

  • Remote/Voice Control: A command from a smartphone app (such as Smart Life, Shelly Cloud, etc.) or a voice assistant goes to the Wi-Fi module of the mini switch via the cloud.

Signal Processing: The MCU receives the command, whether from the physical switch or the Wi-Fi module.

Circuit Control: The MCU sends a signal to the internal relay mechanism. The relay physically opens or closes the main, high-voltage electrical circuit in the connected light, turning it on or off.

Status Sync: The module instantly reports its new power state to the app via the Wi-Fi module, ensuring that the user always knows whether the light is on or off, regardless of how it was switched.

Smart Module vs Traditional Switch:

Feature Smart Switch Module Traditional Switch
Remote Control Yes (App + Voice) No
Voice Assistant Support Alexa & Google No
Timer/Scheduling Yes No
Two-Way Wiring Support Yes Yes
Energy Efficiency High (with automation) Low
Installation Standard Wall Box Standard Wall Box