Aqara Dual Relay Module T2 Instructions

Aqara Dual Relay Module T2

Product Information

The product is a versatile relay device that can be used for various purposes, such as controlling lights, appliances, and other equipment. It supports both wet contact mode and dry contact mode, allowing for different wiring configurations.

Key features include:

• Requires a smartphone or tablet with Wi-Fi or cellular network support (iOS or Android system).
• Requires a stable internet connection and a compatible Aqara Zigbee 3.0 hub within a distance of 10 meters.
• Offers wet contact mode and dry contact mode for different wiring requirements.
• Can be used as a smart outlet, light switch, roller shade switch, or thermostat for boilers.
• Provides DIN rail energy monitoring capabilities (not a circuit breaker).
• Maximum current capacity of 10A.

Product Usage Instructions

Wet Contact Mode

Caution: In wet contact mode, the terminal LIN and LOUT must be shorted with the provided red jumper wire.

1. Turn off the electrical circuit breaker for safety.

2. Locate the terminal points LIN, LOUT, L1, L2, S1, S2, and COM on the product.

3. Attach the load wires of the light to the L1 and L2 terminals.
   Connect wires from the conventional switch to the S1, S2, and COM terminals.

4. Use a screwdriver to tighten all connections.

5. Turn the electrical circuit breaker back on.

6. Select the corresponding switch type and Wet Contact Mode in the app.

7. Test the product to ensure it’s working as expected.

Use Cases in Wet Contact Mode

1. A. Smart Outlet: Connect the load directly to the relay. The relay acts as a simple on/off switch.
2. B. Electric Floor Heating: Similar to the smart outlet, but now the relay acts as a thermostat. Configure automations with a temperature sensor for better control.
3. A. Smart Light Switch: Install the relay behind an existing wall switch to control lights, fans, etc. Supports multi-way configurations.
4. B. Smart Roller Shade Switch: Install the relay behind an existing roller shade switch to control non-smart roller shade motors. Enable Interlock mode for proper functionality.
5. DIN Rail Energy Monitor: Install the relay inside the main junction box using the included DIN rail mount. Measure energy consumption and break the circuit in case of emergencies like water leaks.

Dry Contact Mode

Caution: In dry contact mode, terminal LIN and
LOUT must not be shorted.

1. Turn off the electrical circuit breaker for safety.
2. Locate the terminals L1, L2, LOUT, and COM on your product and the controlled equipment.
3. Connect the load wires of the controlled equipment to the L1 and optionally L2 terminals of the relay.
4. Attach the COM terminal of the controlled device to the Relay’s LOUT terminal.
5. Use a screwdriver to tighten all connections.
6. Turn the electrical circuit breaker back on.
7. Select the corresponding switch type and Dry Contact Mode in the app.
8. Test the controlled equipment and your product to ensure they are working as expected.

Use Cases in Dry Contact Mode

1. Arm Barriers: Wire other devices controllable by dry contacts similar to a garage door controller.
2. Boilers: Use the relay as a thermostat for boilers, enabling features like automatically switching off when nobody is detected at home. Make an Existing Appliance Smart: Use the dry contact to press the button of an existing appliance, such as a coffee machine or air freshener.

Product Introduction

The Dual Relay Module is a device with an almost unlimited number of use cases. From switches, plugs, to curtains, garage doors and even boilers – everything will be possible with this tiny module. AC, DC, Dry Contact mode, Interlock and DIN Rail mount make it a truly versatile solution that can also be connected to most popular third-party ecosystems.

• An Aqara Zigbee 3.0 hub is required. Some functions require specific models of the Aqara hub. Please visit www.aqara.com/support for more details.

** Do not press the button forcefully with tools, as it may cause damage to the button.

Preparation Before Use

1. A smartphone or tablet that supports Wi-Fi or a cellular network (with iOS or Android system) is required.
2. Please ensure that there is a Wi-Fi connection and your internet connection is stable.
3. An Aqara Zigbee 3.0 hub is required (The distance between this product and your hub should be within 10 m).

Device Binding & Initialization

1. Download the Aqara Home app. Search for “Aqara Home” in the Apple App Store, Google Play, Xiaomi GetApps, Huawei App Gallery, or scan the following QR code to download the Aqara Home app:
2. Power up and turn on the Dual Relay Module T2: Please make sure the main circuit breaker is turned off before proceeding. Then connect the Live wire to the terminal L, the neutral wire to the terminal N.
3. Please open the Aqara Home app, tap “Home” and then tap “+” in the top right corner to enter the “Add Device (Accessory)” page, select “Dual Relay Module T2”, and add it according to instructions in the Aqara Home app. After a successful connection, the status indicator of the device will turn blue and flash quickly.

Device Installation

Wet Contact Mode

Caution: In this mode, terminal LIN and LOUT must be shorted with the provided red jumper wire (the jumper wire should be connected)

1. Wiring Guidance
2. Turn off the electrical circuit breaker for safety. Locate the terminal points LIN, LOUT, L1, L2, S1, S2, and COM on the product.
3. Attach the load wires of the light to the L1 and L2 terminals. Connect wires from the conventional switch to the S1, S2, and COM terminals. Use a screwdriver to tighten all connections.
4. Turn the electrical circuit breaker back on. Select the corresponding switch type and Wet Contact Mode in the app and test the product to ensure it’s working as expected.

2. Use Case
3. A. Smart Outlet in this case, the load is connected directly to the relay. The relay acts as a simple on/off switch.

B. Electric Floor Heating: similar to 1-A, but now the relay acts as a thermostat. Configuring the automations with a temperature sensor is suggested.

2. A. Smart Light Switch: in this case, the relay can be installed behind the existing wall switch, that controls light(s), fan(s) etc.  

2-way (3-way) switching: you can also connect two or more switches in a multi- way configuration, and all of them will be able to control the lights connected to the Relay T2.

B. Smart Roller Shade Switch: The relay can be installed behind the existing Roller Shade Switch and control the existing non-smart roller shade motor.

• Please note: to use the T2 as a Roller Shade Switch, the Interlock mode should be strictly enabled.

  3. DIN Rail Energy Monitor: using an included DIN rail mount, the relay can be installed inside the main junction box, measure the energy consumption and even break the circuit in case of emergency such as water leak.

• Please note: the Relay T2 is not a circuit breaker, and its maximum current of 10A does not allow it to control a big part of household circuits.

Dry Contact Mode

Caution: terminal LIN and LOUT must not be shorted (the jumper wire should be removed)

1. Wiring Guidance
2. Turn off the electrical circuit breaker for safety. Locate the terminals L1, L2, LOUT, and COM on your product and the controlled equipment.
3. Connect the load wires of the controlled equipment to the L1 and optionally L2 terminals of Relay. Attach the COM terminal of the controlled device to the Relay’s LOUT terminal. Use a screwdriver to tighten all connections.
4. Turn the electrical circuit breaker back on. Select the corresponding switch type and Dry Contact Mode in the app and test the controlled equipment and your product to ensure they are working as expected.

Note: The mechanical switch is only functional at AC voltages of 85V and above; it does not function with DC voltage.

2. Use Cases
3. Garage Door Controllers: in this case, the relay is controlling the existing garage door motor using the wall button contacts (COM+OP/CS/O/S/C)
   To ensure the compatibility with your garage door opener, please find the wall button contacts, short them with pliers or a paper clip. The door should start opening/closing.
   Please note: when controlling the garage door, ensure that there is no risk of jamming a person.

2. Arm Barriers etc. Other devices controllable by dry contacts can be wired similarly to a garage door controller
3. Boilers: in this case, the relay is used as a thermostat for boilers. For example, it can switch the boiler off in case nobody is detected at home.
4. Make an Existing Appliance Smart: the dry contact can “press” the button of an existing appliance, such as a coffee machine, air freshener etc.

Wireless Switch Mode

The relay can also be used as a wireless switch that does not require replacing the batteries.

1. Connect an existing wired 1- or 2-channel wall switch and use it as a wireless switch
2. Alternatively, you can connect one or two binary sensors instead, and use the relay in automations.

*Please note: the sensor or a switch connected to S1/S2/COM contacts should support the voltage that is supplied to the Relay.

Warnings

1. Installation of this product involves handling high-voltage electricity and should only be performed by qualified professionals in accordance with electrical standards and the product manual.
2. This product is designed for indoor use only. Do not use it in humid environments or outdoors.
3. This product is only safe for use in areas at elevations below 2,000 meters.
4. Be cautious of moisture; do not spill water or any other liquids onto the product.
5. Do not place this product near heat sources.
6. Do not attempt to repair the product yourself; repairs should only be carried out by authorized professionals.
7. Do not overload the product. Before powering up, ensure that the 10A circuit breaker at the front of the product is working properly. Recommended wire-stripping length for terminal connections is 6-8 millimeters.
8. This product should not be installed or fixed in places within reach, like on the outside of a wall. It should be installed within a fixture or a junction box.
9. When affixing the antenna, try to avoid metal, electrical wiring, and the module itself.

Description of Indicator Lights

Product Specifications

• Model: DCM-K01
• Wireless Protocols: Zigbee
• Dimensions: 45.5 × 48 × 24 mm (1.79 × 1.89 × 0.94 in.)
• Rated Parameters: 100 – 250 V~, 50/60Hz, μ/Max. 10A, Max 2500W ;
  • Max.1A, Max 250W(LED, CFL );
  • Max 1A, Max 1/4 HP M.1
  • 24 – 30 V : Max.10A, Max 300W(Resistive load);
  • 30 – 60 V : Max.1A, Max 60W(Resistive load)
• Operating Temperature: -10°C ~ 40°C (14°F ~ 104°F)
• Operating Humidity: 0 ~ 95% RH, no condensation
• Zigbee Operation Frequency: 2405-2475 MHz
• Zigbee Maximum Output Power ≤ 13 dBm
• What is in the Box: Dual Relay Module T2 × 1, User Manual × 1, DIN Rail Accessory × 1, Jumper Wire × 1

References

• Aqara Smart Device Product Support

Read User Manual Online (PDF format)

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