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SONOFF MINI Extreme Wi-Fi Smart Switch (MINIR4 & MINIR4M)⚓︎

Sonoff MINIR4 Sonoff MINIR4M

The MINIR4 (and its Matter-enabled twin, the MINIR4M) is an ultra-compact Wi-Fi relay designed for stealth installations inside existing electrical boxes, making your standard light switches smart without replacing them.

  • Choose this if: You want to make an existing wall switch smart while retaining its physical functionality and need a device that fits into a crowded electrical box.

Physical Installation & Wiring⚓︎

The MINIR4\'s primary advantage is its size, allowing it to be tucked behind a switch inside a standard wall box.

  • Wiring Requirements: This device requires both a Live and a Neutral wire to be present in the switch box for it to be powered.

  • Standard Wiring:

    1. Disconnect power at the breaker.

    2. Connect the incoming Live and Neutral wires to the L In and N In terminals.

    3. Connect the wire leading to your light fixture (the load) to the L Out terminal. The Neutral from the light connects directly to the main Neutral line.

    4. Connect the two wires from your physical switch to the S1 and S2 terminals. This allows the physical switch to send a signal to the MINIR4.

Electrical Characteristics⚓︎

  • Input/Output Voltage: 100-240V AC 50/60Hz

  • Maximum Load: 10A

  • Maximum Power: 2400W (for resistive loads like incandescent bulbs)

  • Wi-Fi: IEEE 802.11 b/g/n 2.4GHz

  • Special Feature: The \"Detach Relay\" mode allows the physical switch (connected to S1/S2) to control other smart devices via automations in Home Assistant, independent of the light the MINIR4 is directly wired to.

SONOFF ZBMINI Extreme Zigbee Smart Switch (ZBMINIR2 & ZBMINIL2)⚓︎

Sonoff ZBMINIR2 Sonoff ZBMINIL2

These are the Zigbee equivalents of the Wi-Fi mini switches, offering the same compact form factor but with the benefits of a robust Zigbee mesh network. Their key difference lies in their wiring requirements.

  • Choose ZBMINIR2 if: You have a neutral wire in your switch box and want a reliable Zigbee switch.

  • Choose ZBMINIL2 if: Your switch box lacks a neutral wire, a common situation in older homes.

Physical Installation & Wiring⚓︎

ZBMINIR2 (Requires Neutral)

  • Installation: Similar to the MINIR4, it fits inside the switch box.

  • Wiring: It requires a constant power supply via both Live (L In) and Neutral (N In) terminals. The load (light) is connected to L Out. The physical switch connects to S1 and S2.

ZBMINIL2 (No Neutral Required)

  • Installation: This is its main selling point. It can be installed in switch boxes that only contain a permanent live wire and the switched wire going to the light.

  • Wiring: The permanent Live wire connects to L In. The wire going to the light fixture (load) connects to L Out. The physical switch is wired between the L In and S1/S2 terminals. The device draws a tiny amount of power through the light bulb itself to stay operational.

  • Important Consideration: Because it powers itself through the load, it requires a minimum load (typically >3W). For very low-power LED bulbs, you might experience flickering. In such cases, a SONOFF Anti-Flicker Module should be installed in parallel with the bulb to stabilize the circuit.

Electrical Characteristics⚓︎

  • Input Voltage: 100-240V AC 50/60Hz

  • Maximum Load (ZBMINIR2): 10A / 2400W

  • Maximum Load (ZBMINIL2): 6A / 1440W (Note the lower rating due to the no-neutral design)

  • Protocol: Zigbee 3.0

SONOFF BASICR4 Wi-Fi Smart Switch⚓︎

Sonoff BASICR4

The BASICR4 is the classic, entry-level smart switch. It\'s not designed for in-wall installation but rather as an in-line device to be added to the power cord of an appliance.

  • Choose this if: You want to add smart control to a device like a floor lamp, a fan, or a coffee maker by inserting a switch into its power cable.

Physical Installation & Wiring⚓︎

Installation involves cutting the power cord of the target appliance and wiring the BASICR4 in the middle.

  • Wiring: The case opens to reveal screw terminals clearly marked for Input and Output.

    1. Cut the appliance cord and strip the ends of the Live and Neutral wires.

    2. Connect the Live and Neutral wires from the wall plug side to the L In and N In (Input) terminals.

    3. Connect the Live and Neutral wires leading to the appliance to the L Out and N Out (Output) terminals.

    4. Securely close the case, ensuring the cable clamps grip the cord to prevent strain on the terminals.

Electrical Characteristics⚓︎

  • Input/Output Voltage: 100-240V AC 50/60Hz

  • Maximum Load: 10A

  • Maximum Power: 2400W

  • Safety: Includes an integrated temperature sensor that acts as an overheating protection, automatically cutting power if the device gets too hot.

SONOFF Smart Roller Shutter Switch (MINI-RBS)⚓︎

Sonoff MINI-RBS

This is a purpose-built Wi-Fi switch for controlling AC-powered motors used in blinds, shutters, and awnings.

  • Choose this if: You need to add smart control to any motorized window covering that has separate \"Up\" and \"Down\" controls.

Physical Installation & Wiring⚓︎

This device is typically installed inside the wall box for the shutter\'s control switch or near the motor itself.

  • Wiring: It connects to both the power source and the motor\'s directional wires.

    1. L and N are connected to the main Live and Neutral power lines.

    2. L1 is wired to the motor\'s \"Up\" directional input.

    3. L2 is wired to the motor\'s \"Down\" directional input.

    4. S1 and S2 are connected to the physical two-gang momentary switch for manual Up/Down control.

  • Interlock Safety: The device has a hardware and software interlock, making it impossible to send power to both the Up (L1) and Down (L2) terminals simultaneously, which protects the motor from damage.

Electrical Characteristics⚓︎

  • Input Voltage: 100-240V AC 50/60Hz

  • Maximum Load: 2A (This is lower than standard switches because motors are an inductive load)

  • Maximum Power: 480W

SONOFF MINI Dry Wi-Fi Smart Switch (MINI-D)⚓︎

Sonoff MINI-D

The MINI-D is a highly versatile switch that provides a \"dry contact\" (or potential-free) relay. This means its internal switch is electrically isolated from the power that runs the device. It acts like a smart finger, pushing a button on another device.

  • Choose this if: You need to control a device that uses a low-voltage signal or a simple button press, like a garage door opener, an electric gate, or a computer\'s power switch.

Physical Installation & Wiring⚓︎

The key is to understand the separation between the power input and the signal output.

  • Powering the MINI-D: The terminals labeled L In and N In must be connected to a 100-240V AC power source to power the device\'s Wi-Fi and processor.

  • Wiring the Dry Contact: The output terminals (NO - Normally Open, COM - Common) are the switch. These two ports have no voltage. You connect them to the two terminals on your target device that you would normally short together with a physical button. For a garage door opener, this would be the \"Bell\" or \"Push Button\" terminals.

Electrical Characteristics⚓︎

  • Input Power: 100-240V AC 50/60Hz

  • Dry Contact Output:

    • Max Voltage: Up to 250V AC or 30V DC

    • Max Current: 5A

SONOFF 4CHR3 & 4CHPROR3 4-gang Wi-Fi Smart Switch⚓︎

Sonoff 4CHR3

These are robust, multi-channel controllers designed to manage up to four independent circuits from a single unit. Their DIN rail mountable design makes them ideal for organized installations in enclosures or control panels.

  • Choose this if: You need to control multiple devices in close proximity, such as in a home theater cabinet, an aquarium setup, or a workshop. The PRO version is essential for interlocking or dry contact needs.

Physical Installation & Wiring⚓︎

These devices are larger and intended to be mounted on a standard 35mm DIN rail or screwed to a surface.

  • Wiring (4CHR3): A single pair of Live and Neutral terminals provides power to the entire unit. Each of the four channels has its own output pair (L Out, N Out) to be wired to each respective appliance.

  • Wiring (4CHPROR3): The PRO version offers more flexibility. It can function like the standard 4CHR3, or it can be set to dry contact mode. In this mode, the output relays are isolated from the mains input, behaving like four separate MINI-D switches in one box. This is configured via jumpers or switches inside the device.

Electrical Characteristics⚓︎

  • Input Voltage: 100-240V AC 50/60Hz

  • Maximum Load (per channel): 10A / 2200W

  • Maximum Total Load (for the entire device): 16A / 3500W (Important: Do not exceed the total load, even if individual channels are below their limit).

  • PRO Features: The 4CHPROR3 offers Inching (momentary switch mode) and Interlocking (where only one of the four channels can be active at a time), configurable in the software.