Meross MTS150HK Smart WiFi Thermostatic Radiator Valve

Safety Precautions

• Do not use rechargeable or 1.2V AA batteries.
• The device is intended for indoor use only and must be protected from moisture, dust, and direct sunlight.
• The device is designed exclusively for water radiators.
• There are two types of radiator valves: manual (1) and thermostatic (2).

Diagram shows two types of radiator valves: (1) Manual valve, (2) Thermostatic valve.

Thermostatic valves (commonly numbered 1 to 5) can be replaced by the Meross device.

Note: If you have manual valves, do not attempt to change them yourself. Call a specialist.

Package Contents

The package typically includes:

• 1 x Meross Smart Thermostatic Radiator Valve (MTS150HK)
• 1 x User Manual
• 1 x Power Adapter
• 1 x USB Cable
• 1 x Giacomini Adapter
• 1 x Caleffi Adapter
• 1 x M28 x 1.5 Adapter
• 1 x Danfoss RA Adapter
• 1 x Danfoss RAV Adapter
• 1 x Danfoss RAVL Adapter

Note: The Smart Hub is not included with the MTS150.

Diagrams show the Meross device, power adapter, USB cable, and Smart Hub.

Product Installation

To power the MTS150, 2 AA batteries are required.

A Meross hub is necessary for proper operation.

Temperature is displayed in Celsius (°C).

The Meross device operates within a temperature range of 5°C-35°C.

Step 1: Unscrew the Radiator Thermostat

Unscrew the existing radiator thermostat. Ensure no water leaks during this process.

Diagram illustrates unscrewing a radiator valve.

Step 2: Install Batteries and Initialize

Install 2 x 1.5V AA batteries. Wait a few seconds for "--" to appear on the screen (indicated as (1) in the diagram). Press the "O" button and wait a few seconds. The screen will then display states (2-6).

Diagrams show battery installation and various screen states: (1) initial screen with "--", followed by screens (2) through (6) showing different configurations or states.

Step 3: Mount the Meross Device

If your radiator valve connector is M30 x 1.5, screw the Meross device directly onto the radiator. You can adjust the angle so the screen faces your preferred direction. Hold the product and screw the nut until it is securely tightened.

Diagram shows an M30 x 1.5 connector and illustrates screwing the Meross device onto the radiator, then tightening the nut.

Step 4: Install Adapters (If Necessary)

For valves listed below, first install the appropriate adapter according to the illustration. Then, screw the Meross product onto the adapter as described in Step 3.

Diagrams show the installation process for various adapters: Danfoss RA, Danfoss RAV, Danfoss RAYL, Giacomini, Caleffi, and M28 x 1.5.

Step 5: Final Check and Battery Indicator

Press the "O" button; the pin will detect both probe ends. Note that the screen will turn off during motor operation to save battery; this is not a product defect. If the screen displays "E", it means the batteries need to be replaced.

Diagram shows the letter "E" displayed on the device screen, indicating low battery.

Step 6: Readiness for Configuration

When the screen displays the information shown below, the device is ready for configuration. If this information does not appear, reinsert the batteries and start again from Step 1.

Diagram shows the device screen indicating readiness for configuration, typically displaying the current temperature and Wi-Fi status.

Note: If you cannot pair the thermostatic valve with the Smart Hub, try again. Press and hold the "+" and "-" buttons simultaneously for 5 seconds to reset the valve and start again from Step 1.

Diagram shows the device screen with "+" and "-" buttons.

Software Installation and Configuration

1. Download the Meross App

Download the Meross app from your device's app store:

Download on the App Store | Get it on Google Play | Available at Amazon Appstore

Icons representing the App Store, Google Play, and Amazon Appstore.

2. Device Configuration

1. Connect your smartphone or tablet to a 2.4 GHz Wi-Fi network.
2. Ensure the Meross device is within Wi-Fi signal range.
3. The device supports iOS 13/iPadOS 13 and newer. It is recommended to update your iOS or iPadOS system to the latest version before pairing.
4. Launch the Meross app and log in to your account. If you are a new user, tap "Sign up" to create an account.
5. Tap the "+" icon to select the device you wish to add, then follow the configuration wizard to complete the setup.
6. Moving the device to a different location does not require additional steps, provided it remains on the same Wi-Fi network.

Important Notes for Setup

• If you are re-adding the device, perform a reset before proceeding.
• After configuration is complete, the device can be controlled via the Apple Home app.
• If the QR code does not work, try adding the device directly within the Apple Home app.
• For more information, visit: https://www.meross.com/support

Button and Indicator Descriptions

Diagram shows the Meross device with numbered indicators (1-8) and an LED indicator (9) on the main body, and a button (10) on the top.

Device Indicators:

• 1. Indicator Status:
  • Blinking: Device is ready for pairing or disconnected from the Smart Hub.
  • Solid: Device is paired and connected to the Smart Hub.
• 2. Mode:
  • On: Schedule mode.
  • Off: Manual mode.
• 3. Heating/Cooling:
  • On: Heating.
  • Off: Cooling.
• 4. Battery Status:
  • On: Battery replacement is required.
  • Off: Batteries are in good condition.

Device Buttons:

• 5. Plus Button (+): Press to increase the temperature.
• 6. Minus Button (-): Press to decrease the temperature.
• 7. Mode Button: Press to switch operating modes. Press and hold to turn the device on/off.
• 8. Temperature Display: Shows the current or set temperature.
• 9. LED Indicator:
  • (1) Solid orange: Booting / Resetting / Software Update in progress.
  • (2) Flashing brown and green: Configuration mode.
  • (3) Flashing green: Pairing mode / Wi-Fi connection / Wi-Fi disconnection.
  • (4) Solid green: Connected to Wi-Fi.
  • (5) Solid red: No Wi-Fi connection.
• 10. Button (General Function):
  • (1) Press and hold for 5 seconds until the LED indicator flashes brown and green to enter configuration mode.
  • (2) Double-press to enable pairing mode.

Product Operation

1. Settings (via Meross App)

Screenshot of the Meross app settings screen showing various options.

• Device Name: Set a custom name for your device.
• Smart Hub: Configure and check the status of your Smart Hub.
• User Manual: Access the user manual.
• Mode Temp (Tryb Temp.): Set the temperature for Heat, Cool, or Economy modes.
• Schedule (Harmonogram): Set a temperature schedule for automatic operation.
• Open Window Detection: Configure an alarm for when an open window is detected.
• Temperature Calibration: Calibrate the device if the current temperature reading is inaccurate.
• Engine Calibration: Enable calibration if temperature control is inaccurate.
• Low Battery: Receive an alarm when the battery level is low.
• Timezone: Set the device's timezone for correct schedule operation.
• Device Time: Set the current time for the device.
• Location: Set the device's location.

2. Voice Control

The device supports Amazon Alexa, Siri, and Google Assistant. You can set the temperature and operating mode using voice commands.

To set up voice control, select Account -> Amazon Alexa or Google Assistant within the Meross app for pairing instructions.

Note: When using voice commands, ensure all temperatures are set within the 5°C to 35°C range.

Siri Commands:

• Turn On/Off: "Hey Siri, turn on/off the [bedroom/living room] thermostat."
• Set Temperature: "Hey Siri, set the [kitchen] thermostat to 25°C." or "Hey Siri, make the [bedroom] warmer/cooler."
• Control Mode: "Hey Siri, set the [living room] thermostat to heating mode."

Amazon Alexa Commands:

• Turn On/Off: "Alexa, turn on/off the [bedroom/living room] thermostat."
• Set Temperature: "Alexa, set the [kitchen] thermostat to 25°C." or "Alexa, make the [bedroom] warmer/cooler."
• Control Mode: "Alexa, set the [living room] thermostat to heating mode."

Google Assistant Commands:

• Turn On/Off: "Hey Google, turn on/off the [bedroom/living room] thermostat."
• Set Temperature: "Hey Google, set the [kitchen] thermostat to 25°C." or "Hey Google, heat/cool the [living room] by 2 degrees." or "Hey Google, make the [bedroom] warmer/cooler."
• Control Mode: "Hey Google, set the [living room] thermostat to heating mode."

3. Open Window Detection

The device automatically stops heating if it detects a sudden temperature drop (default 2°C within 15 minutes), typically caused by an open window or door. If no action is taken within 30 minutes, the device will return to its previous state.

You can manually resume device operation by pressing any button or using the Meross app.

Good to Know

1. To ensure long battery life, use 2x AA batteries. Settings in the Meross app are not instantly synchronized with the device. Synchronization rules apply:

   Feature	Configured in Meross App	Configured on Device
   Time/Calendar	Device synchronizes its time with the Internet every 24 hours.	Not applicable
   Mode & Temperature Change	Synchronization with the device within 3 minutes.*	Instant synchronization with the Meross app

   * After applying settings in the app, it may take up to 3 minutes to observe changes on the device screen.

2. For device protection, the product will attempt to maintain an internal temperature of approximately 5°C if the room temperature drops below 5°C.

Frequently Asked Questions (FAQs)

1. How many smart radiator thermostats can the Meross app control?

   The Meross app can support an unlimited number of smart devices. You can purchase additional smart radiator thermostats and pair them with your installed smart hub.

2. Why can't I control my smart radiator thermostat after replacing the batteries?

   You must repeat steps 2-6 described previously after each battery replacement in the device.

3. What should I do if the Meross app cannot control the added smart radiator thermostat?

   You can resolve the following issues:

   • Check the batteries and replace them if the low battery icon appears on the screen.
   • Ensure your home Wi-Fi password has not changed. If it has, you must reset your smart hub (press the power button for 5 seconds) and reconnect it to your home Wi-Fi network through the configuration process in the Meross app.
   • Place your smart hub closer to your Wi-Fi router.
   • Restart your smart hub.
   • If all else fails, uninstall and reinstall the batteries, then pair the device with your smart hub via the Meross app.

Environmental Protection

Used electronic equipment marked according to European Union directives cannot be disposed of with other municipal waste. It is subject to selective collection and recycling at designated points. By ensuring its proper disposal, you prevent potential negative consequences for the natural environment and human health. The system for collecting used equipment complies with locally applicable environmental protection regulations for waste disposal. Detailed information on this topic can be obtained from your local municipality, waste disposal facility, or the store where the product was purchased.

The product complies with the requirements of the EU's New Approach Directives concerning safety, health, and environmental protection, specifying hazards that should be identified and eliminated.