SONOFF MINI-ZB2GS MINI DUO 2-Gang Zigbee Smart Switch

1. Introduction

The SONOFF MINI-ZB2GS MINI DUO is a 2-gang Zigbee 3.0 smart switch designed for dual load control. It allows you to control two separate loads (e.g., lights) and supports connection with external switches, providing both smart automation and traditional switch operation. This device also functions as a Zigbee router to extend your network's signal coverage. It requires a Zigbee hub for smart functionality.

2. Safety Information

WARNING: Electrical installation should only be performed by qualified personnel. Ensure power is OFF at the circuit breaker before installation.

• Always disconnect power before installing or servicing the device.
• Do not exceed the maximum load rating of 10A per gang, with a total maximum of 16A resistive load.
• Ensure proper wiring according to local electrical codes. A neutral wire is required for operation.
• The device is built with flame-retardant casing and includes overheat and surge protection for enhanced safety.

3. Product Overview

The MINI-ZB2GS is a compact device designed to fit behind existing wall switches. It offers advanced smart home capabilities while retaining the functionality of traditional switches.

Key Features:

• Zigbee 3.0 Compatibility: Seamless integration with various Zigbee hubs.
• Dual Load Control: Independently control two connected electrical loads.
• External Switch Support: Compatible with rocker, momentary, and SPDT switches.
• Zigbee Signal Booster: Extends Zigbee network coverage as a router device.
• Power-On Behavior Customization: Define the device's state after a power outage.
• Detach Relay Mode: Allows physical switches to act as smart triggers for smart bulbs.
• Compact Design: Fits easily behind wall switches (minimum mounting box depth of 60mm required).
• Safety Features: Flame-retardant casing, overheat protection, surge protection.

4. Specifications

5. Setup

5.1. Pre-installation Checklist

• Ensure you have a neutral wire available in your switch box.
• Turn off power at the circuit breaker before starting any electrical work.
• Verify your mounting box is compatible (86 type, EU type, or 120 type) and has a minimum depth of 60mm.
• You will need a compatible Zigbee hub (e.g., ZBBridge-U, NSPanel Pro, iHost, ZBBridge-P, ZBDongle-P/-E, Dongle-M, Dongle Plus MG24, Dongle Lite MG21).

5.2. Wiring Instructions

The MINI-ZB2GS supports dual load control and requires a neutral wire. Refer to the diagrams below for standard wiring configurations. The 'L' terminal is for the Live Line input, 'N' for Neutral, 'L1' and 'L2' are Live Output Terminals for Load 1 and Load 2 respectively. 'S1' and 'S2' are for connecting external switches.

5.3. Pairing with Zigbee Hub

Once wired and powered on, the device will enter pairing mode. Follow your Zigbee hub's instructions to add a new device. The MINI-ZB2GS is compatible with a wide range of Zigbee hubs, including:

• SONOFF ZBBridge-U, NSPanel Pro, iHost, ZBBridge-P
• ZBDongle-P/-E, Dongle-M, Dongle Plus MG24, Dongle Lite MG21

6. Operation

6.1. Dual Load Control

The MINI-ZB2GS allows independent control of two connected loads. You can switch them on/off via the connected external switches or through your Zigbee hub's application.

6.2. Timer Functionality

Set schedules and timers through your Zigbee hub's application to automate your lighting system. For example, you can schedule lights to turn on at 07:00 and off at 22:45.

6.3. Power-On Behavior

Customize the device's behavior after a power outage. You can configure it to resume its last state, turn on, or remain off when power is restored. This ensures your smart devices always follow your preference.

6.4. Detach Relay Mode

In Detach Relay mode, the physical switch connected to the MINI-ZB2GS acts purely as a smart trigger. This means you can use your traditional wall switch to control smart bulbs (which are always powered) or activate smart scenes, without directly cutting power to the bulb.

6.5. Smart Scenes and Automation

Create custom smart scenes and automation rules through your Zigbee hub's application. For example, combine the MINI-ZB2GS with a motion sensor (e.g., SONOFF SNZB-03P) to automatically turn on lights when motion is detected.

6.6. Zigbee Signal Booster

The MINI-ZB2GS acts as a Zigbee router, boosting the signal and extending the coverage of your Zigbee network. This helps maintain seamless connectivity for all your Zigbee devices, especially in larger homes.

6.7. Integration with Third-party Platforms

Based on the Zigbee 3.0 standard protocol, the MINI-ZB2GS seamlessly integrates with various third-party open-source platforms, making it ideal for advanced home automation setups. This includes:

Apple Home Integration via Matter Bridge:

All SONOFF Zigbee devices, including the MINI-ZB2GS, can be integrated into your Apple ecosystem via a Matter Bridge (e.g., ZBBridge-U or eWeLink CUBE), enabling seamless interconnected device control.

7. Maintenance

• Keep the device clean and free from dust.
• Do not expose the device to excessive moisture or extreme temperatures.
• Regularly check for firmware updates through your Zigbee hub's application to ensure optimal performance and security.
• Avoid using harsh chemicals or abrasive cleaners on the device.

8. Troubleshooting

• Device not powering on: Ensure all wiring connections (Live, Neutral, Load) are secure and correct. Verify that power is supplied to the circuit.
• Cannot pair with Zigbee hub: Ensure the device is in pairing mode (usually indicated by a blinking LED). Check that your Zigbee hub is within range and in pairing mode. If issues persist, try resetting the device (refer to your hub's manual for specific reset procedures if not covered here).
• External switch not responding: Check the wiring of the external switch to the S1/S2 terminals. Ensure the switch type (rocker, momentary, SPDT) is correctly configured in your Zigbee hub's application if applicable.
• Intermittent connectivity: The MINI-ZB2GS acts as a router, but if you have many devices or a large area, consider adding more Zigbee routers to strengthen your mesh network. Ensure there are no major obstructions (e.g., thick concrete walls) between the device and the hub/other routers.
• Why are there two 'L' connections? The 'L' terminal is for the incoming Live Line. The 'L1' and 'L2' terminals are for the Live Output to control two separate loads. This allows the single device to manage two distinct circuits.

9. User Tips

• For optimal performance, ensure your Zigbee network has a good mesh structure with enough router devices.
• Experiment with the 'Power-On Behavior' settings to find what works best for your home's routines and power stability.
• Utilize the 'Detach Relay' feature when using smart bulbs to maintain constant power to the bulb while still using your physical switch for smart control.
• Regularly check the SONOFF website or your Zigbee hub's app for firmware updates to benefit from new features and improvements.

10. Warranty and Support

SONOFF provides a 2-year hassle-free warranty for the MINI-ZB2GS. For technical support, troubleshooting assistance, or warranty claims, please contact SONOFF customer service through their official website or the platform where you purchased the device. Please have your model number (MINI-ZB2GS) and purchase details ready.