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 Homekit and Matter (with a compatible Aqara hub), allowing seamless integration with popular platforms like Apple HomeKit, Alexa, and IFTTT.
- Homekit and Matter Support: Compatible with mainstream ecosystems via an Aqara Zigbee 3.0 hub (excluding Camera Hub G2H or third-party hubs).
- Proximity: For stable connection, ensure the module is within 400 inches of the Aqara Zigbee hub, and the hub is within the same range from the Wi-Fi router.
- Dry Contact Mode: Supports dry (potential-free) contact mode with pulse and on-off switching for devices like boilers and garage doors. Neutral wire is required.
- Wireless Switch Mode & Interlock for Motor Control: Offers control of tubular motors and can function as a roller shade switch. Can also convert existing wall switches into scene controllers.
- Energy Saving & Power off Memory: Features advanced energy monitoring (in wet contact mode) and ultra-low idle power consumption. Retains last state after power interruptions.
- Electrical Safety & Flexible Installation: Includes overheat protection, overload protection, and a customizable power limit. Can be installed near lights, behind switches, or wall outlets, and includes a DIN rail mount.
Figure 1: Aqara Dual Relay Module T2 with its retail packaging.
What's in the Box
- Dual Relay Module T2
Specifications
| Specification | Value |
|---|---|
| Product Dimensions | 1.79 x 1.89 x 0.94 inches; 2.11 ounces |
| Item model number | DCM-K01 |
| Manufacturer | Lumi United Technology Co., Ltd. |
| Connector Type | Terminal Block |
| Contact Type | Normally Open Or Normally Closed |
| Mounting Type | din_rail |
| Operation Mode | Automatic |
Setup
The Aqara Dual Relay Module T2 requires an Aqara Zigbee 3.0 hub for full functionality and integration into smart home ecosystems. Ensure your hub's firmware is up to date.
Figure 2: Recommended maximum distance for device connectivity.
For a sturdy connection, the module should be within 400 inches of the Aqara Zigbee hub, and the hub within the same range from the Wi-Fi router. Both the hub and router must be on the same local area network (LAN).
Figure 3: Compatibility with various smart home platforms.
Installation Video Guide
Video 1: Official installation guide for the Aqara Dual Relay Module T2. This video demonstrates the wiring process and initial setup steps for integrating the module into your smart home system.
Operating Modes
Dry Contact Mode
The Dual Relay Module T2 supports dry contact mode, also known as potential-free contact mode. This allows it to integrate with a wide variety of electrical devices that require a simple pulse or on-off signal, such as garage doors, boilers, and traditional light switches. A neutral wire is required for this mode.
Wet Contact Mode
In wet contact mode, the module directly controls the power supply to the connected device. This mode is suitable for applications like smart roller shades and light switches where the module acts as an inline switch.
Figure 4: Dry Contact and Wet Contact Mode applications.
Energy Monitoring & Power off Memory
The T2 module integrates advanced energy monitoring capabilities, allowing you to track and manage the power consumption of connected devices. This feature is available only in wet contact mode. The power-off memory function ensures that the module retains its last state (on/off) even after power interruptions, providing consistent operation.
Figure 5: Energy Monitoring and Power Off Memory features in the Aqara Home app.
Wireless Switch Mode & Interlock for Motor Control
The Wireless Switch Mode allows the T2 to convert an existing wall switch into a scene controller without requiring any wiring changes to the switch itself. For motor control, the interlock mode ensures that only one channel is active at a time, preventing damage to tubular motors used in roller shades or similar applications.
Figure 6: Interlock Mode setting for motors.
Installation Guidelines
The T2 module is designed for flexible installation in various locations, including behind existing switches or within wall outlets. It comes with a DIN rail mount for easy integration into electrical panels.
Figure 7: Flexible installation options and dimensions.
Electrical Safety
The T2 module is equipped with multiple safety features to protect your home and the device itself. These include overheat protection, overload protection, and a customizable power limit. If consumption exceeds the specified settings, the device will automatically shut off.
Figure 8: Overheat and Overload Protection.
Caution: Installation of the T2 is intended for users familiar with electrical installations. It is advised to contact a professional electrician and use these instructions as a reference only.
Maintenance
To ensure optimal performance and longevity of your Aqara Dual Relay Module T2, regularly check all wiring connections to ensure they are secure. Avoid exposing the device to extreme temperatures or humidity. Keep the module clean and free from dust buildup. If the Zigbee antenna is exposed, handle it carefully to prevent damage.
Troubleshooting
- Device not responding: Ensure the module is within 400 inches of the Aqara Zigbee hub and the hub is within range of your Wi-Fi router. Verify that the hub and router are on the same LAN.
- Dry Contact Mode issues: Confirm that a neutral wire is properly connected to the module.
- Motor control problems: Ensure 'Interlock mode' is enabled in the Aqara Home app settings for tubular motors to prevent conflicting signals.
- Power-off memory not working: Verify that the energy monitoring feature is enabled and the module is in wet contact mode.
- Overheat/Overload shutdowns: Check the connected load to ensure it does not exceed the module's customizable power limit. Reduce the load if necessary.
- Installation in tight spaces: The module's dimensions (1.80 × 1.89 × 0.95 inch) might make it challenging to fit in standard junction boxes. Consult local electrical codes and consider professional installation if unsure.
Warranty & Support
The Aqara Dual Relay Module T2 (Model: DCM-K01) is manufactured by Lumi United Technology Co., Ltd. For warranty information and customer support, please refer to the official Aqara website or contact their customer service directly. Keep your purchase receipt for warranty claims.
