Product Overview
The Aqara Dual Relay Module T2 is a versatile smart home device designed to integrate various electrical appliances into your smart home ecosystem. It supports both wet and dry contact modes, offering broad compatibility with platforms like Matter (via a compatible Aqara hub), Apple HomeKit, Amazon Alexa, Google Home, and IFTTT.
Key Features:
- Compatibility Features: Works with Aqara Zigbee 3.0 hubs (excluding Camera Hub G2H) for Matter, HomeKit, Alexa, IFTTT, and Aqara Home app integration.
- Dry Contact Mode: Supports pulse and on-off switching for devices like boilers and garage doors.
- Wireless Switch Mode & Motor Control Interlock: Converts existing wall switches into scene controllers and provides secure control for tubular motors, functioning as a roller shade switch.
- Energy Saving & Power-off Memory: Advanced energy monitoring (wet contact only) and lower idle power consumption via Zigbee. Retains last state after power interruptions.
- Safety and Installation Flexibility: Overheat and overload protection, customizable power limit, and flexible installation options (near light, behind switch/outlet, DIN rail mount).
Package Contents
Your Aqara Dual Relay Module T2 package includes the following items:
- Aqara Dual Relay Module T2 (DCM-K01)
- User Manual
- Jumper Wire (for wet contact mode)
- DIN Rail Accessory (for mounting)
- Antenna with sticky pad (for extended range)
Setup and Installation Guide
Important Safety Information: Before beginning any installation, ensure the main circuit breaker is turned off to prevent electrical shock. It is recommended that installation be performed by a qualified electrician.
Wiring Diagram Overview:
The Aqara Dual Relay Module T2 supports both AC and DC powering. Ensure proper wiring based on your specific application.
Image: The Aqara Dual Relay Module T2 and its retail packaging. The module is compact with multiple screw terminals for wiring.
Image: Dimensions of the Aqara Dual Relay Module T2 (48mm x 45.5mm x 24mm) and its compatibility with AC or DC power. A DIN rail accessory is included for mounting.
Wet Contact Mode (Light Switch Example):
In wet contact mode, the relay directly controls the power to the connected load. This is suitable for lights, fans, or other appliances that require direct power switching.
Image: The Aqara Dual Relay Module T2 is compatible with Aqara Home, HomeKit, Alexa, Google Home, IFTTT, and Home Assistant.
Image: Examples of Dry Contact (garage door, boiler) and Wet Contact (smart roller shade, smart light switch) applications.
Wiring Steps for Light Switch:
- Turn off the main circuit breaker.
- Confirm power is off using a voltage tester.
- Connect the neutral wire from your electrical box to the 'N' terminal on the T2.
- Connect the live wire from your electrical box to the 'L' terminal on the T2.
- Connect the jumper wire between 'LOUT' and 'LIN' terminals on the T2 (for wet contact mode).
- Connect the load (e.g., light fixture) wires to the 'L1' and 'L2' terminals.
- For existing wall switch control, connect the switch wires to the 'S1' and 'COM' terminals (and 'S2' if dual switch).
- Ensure all connections are secure.
- Carefully place the T2 module and wiring back into the wall box. A box with at least 60mm depth is recommended.
- Turn on the main circuit breaker.
Video: Official Aqara installation video demonstrating the wiring process for the Dual Relay Module T2 in a light switch application.
Dry Contact Mode (Garage Door Example):
Dry contact mode allows the T2 to act as a potential-free switch, ideal for controlling devices that respond to a momentary contact closure, such as garage door openers or boiler systems.
Wiring Steps for Garage Door:
- Turn off the main circuit breaker.
- Confirm power is off.
- Remove the jumper wire between 'LOUT' and 'LIN' terminals on the T2.
- Connect the T2 to a 12V DC power supply (or appropriate AC/DC power source) to the 'L' and 'N' terminals.
- Connect the wires from your garage door opener's wall button terminals (or the corresponding terminals on the opener itself) to the 'L1' and 'LOUT' terminals on the T2.
- Ensure all connections are secure.
- Carefully place the T2 module and wiring.
- Turn on the main circuit breaker.
Image: Wiring diagram for connecting the Aqara Dual Relay Module T2 in dry contact mode to a garage door controller.
Wireless Switch Mode:
The T2 can be configured to act as a wireless switch, converting an existing wired switch into a scene controller without affecting its original load. This requires the T2 to be powered by AC or +5V DC.
Configuration Steps:
- Ensure the T2 is powered (AC or +5V DC).
- In the Aqara Home app, navigate to the device settings for the Dual Relay Module T2.
- Select "Convert to wireless switch" and enable the desired channels (S1/S2).
- Once enabled, the physical switch connected to S1/S2 will trigger automations within the Aqara Home app.
Operating Your Dual Relay Module T2
Using the Aqara Home App:
After successful installation and pairing with your Aqara Zigbee 3.0 hub, open the Aqara Home app.
- On the home screen, you will see the configured switches (e.g., "Claire Light" and "Claire Fan").
- Tap on the respective icons to toggle the connected devices on or off.
- Access device settings for advanced options like power-off memory, switch type, and interlock mode.
Image: The Aqara Home app interface showing energy monitoring for the Dual Relay Module T2.
Voice Control:
The Dual Relay Module T2 supports voice control through compatible platforms like Apple HomeKit, Amazon Alexa, and Google Home.
- Ensure your Aqara hub is linked to your chosen voice assistant account.
- Use commands such as "Hey Siri, turn on Claire Light," "Alexa, turn off Claire Fan," or "Hey Google, open the garage door."
Manual Control:
The physical switch connected to the T2 will continue to function, allowing manual control of the connected devices. The T2 will synchronize its state with the physical switch.
Advanced Features
Energy Monitoring:
The T2 module provides real-time and historical energy consumption data for devices connected in wet contact mode. This feature helps you track and manage your energy usage.
Image: The interlock mode setting in the Aqara Home app, used for controlling bi-directional motors like those in roller shades.
Power-off Memory:
The T2 module is equipped with a power-off memory function, allowing it to retain its last state (on/off) even after power interruptions. This ensures seamless operation and avoids unexpected changes in device status. You can configure this behavior in the Aqara Home app settings.
Safety Information
The Aqara Dual Relay Module T2 incorporates several safety features to protect your home and devices:
- Overheat Protection: Automatically shuts off if the internal temperature exceeds safe limits.
- Overload Protection: Prevents damage by cutting power if the connected load exceeds the module's capacity.
- Customizable Power Limit: Allows users to set a maximum power consumption threshold, automatically turning off the device if exceeded.
Image: Internal view of the Aqara Dual Relay Module T2 highlighting its overheat and overload protection mechanisms.
Troubleshooting
- Device not responding: Ensure the T2 is properly wired and receiving power. Check the Zigbee signal strength in the Aqara Home app. Verify your Aqara hub is online and updated.
- App control issues: Ensure your Aqara hub is connected to the internet. Restart the Aqara Home app.
- Physical switch not working: Check wiring connections to S1/S2 and COM terminals. Ensure the correct switch type is selected in the app settings (rocker, button, or disabled).
- Energy monitoring not showing data: This feature is only available in wet contact mode. Ensure the T2 is wired in wet contact mode.
- Garage door not responding in dry contact mode: Verify the jumper wire is removed. Ensure the garage door opener responds to a momentary contact closure. Some modern garage door openers with advanced security features may require additional hardware or specific wiring not directly supported by simple dry contact.
Product Specifications
| Feature | Detail |
|---|---|
| Model Number | DCM-K01 |
| Dimensions | 1.8 x 1.89 x 0.95 inches (48 x 45.5 x 24 mm) |
| Weight | 3.53 ounces (100g) |
| Connectivity | Zigbee 3.0 |
| Power Input | AC or DC |
| Contact Type | Dry, Wet |
| Material | Silver (for contacts) |
| Manufacturer | Lumi United Technology Co., Ltd |
| First Available | June 3, 2024 |
| Safety Features | Overheat Protection, Overload Protection, Customizable Power Limit |
| Mounting Type | DIN Rail (accessory included) |
Warranty and Customer Support
For warranty information, technical support, or further assistance, please refer to the official Aqara website or contact their customer service directly. Keep your proof of purchase for warranty claims.
