Meross MTS215 Smart Wi-Fi Thermostat User Manual

Safety Information

• Make sure the power is OFF at the circuit breaker controlling the thermostat you are replacing.
• The thermostat must be installed and used in accordance with your local electrical code. If you are unfamiliar with these codes, or feel uncomfortable performing the installation, please call a qualified electrician.
• Do NOT install the thermostat with wet hands or when standing on wet or damp surfaces.
• Compatible with high/line voltage (120-240 VAC) electric heating system only.

Package Contents

• 1 x Smart Wi-Fi Thermostat
• 1 x User Manual
• 4 x Screws ?
• 3 x Wire Nuts ?
• 1 x Wiring Sticker

Getting to Know Your Thermostat

The thermostat features a digital display and control buttons. The display shows current temperature, set temperature, Wi-Fi status, and operational modes. Key indicators and buttons are labeled as follows:

• Indicators:
• A: Current temperature/Set temperature
• B: Wi-Fi connection status ?
• C: Auto (Schedule) mode ?
• D: Temperature presets: Comfort ?️, Sleep ?, Economy ?
• E: Open window detected ?️
• F: Heating status ?
• Buttons:
• G: Mode button ⚙️
• H: Power button ?
• I: Up and Down buttons ⬆️ / ⬇️

Operation Notes:

• The device automatically stops heating if a sudden temperature drop is detected (e.g., from an open window or door). It will resume its previous status after 30 minutes if no action is taken, or can be manually resumed by pressing any button or via the Meross app.
• Press the Mode button to switch between Auto mode and three temperature presets. A long press of the Mode button for 3 seconds temporarily unlocks the child lock.
• Tap the Power button to turn the device on/off. When powered off, press and hold for 3 seconds to restart the device.
• Press and hold the Up and Down buttons simultaneously for 5 seconds to perform a factory reset.

Wiring Diagram

The wiring diagram illustrates the connections for the thermostat. It shows the thermostat unit connected to wires labeled L(L1), L2(N), and Load, which then connect to the heating system. The diagram specifies wire colors for clarity:

• L(L1) and Load: Black insulated wires
• L2(N): Red or White insulated wires

Installation Guide

Step 1: Download the Meross App

Download the Meross app from the Apple App Store or Google Play Store. Scan the provided QR code or search for "Meross" in your app store. The app will guide you through the wiring process.

Step 2: Set Up the Device

• Connect your smartphone or tablet to a 2.4 GHz Wi-Fi network.
• Ensure your smart device is covered by a strong Wi-Fi signal.
• Launch the Meross app and log in to your account, or if you are a new user, tap "Sign up" to create a new account.
• Tap the "+" icon to select the type of smart device you want to add (MTS215), then follow the setup wizard to finish configuration.

Note: The MTS215 only supports 2.4GHz Wi-Fi networks.

Important: If this is not the first time you have added this smart device, you will need to reset it by pressing and holding the Up and Down buttons simultaneously for 5 seconds until the Wi-Fi LED starts blinking.

For further assistance, visit: www.meross.com/support

How to Use

(1) Device Control Page

The Meross app's device control page allows you to monitor and manage your thermostat. You can check the current temperature, humidity, and outdoor temperature. You can also set the target temperature and enable or disable the schedule feature.

(2) Device Settings

• Linked Services: Add or remove third-party smart home services compatible with Matter, such as Alexa, Apple Home, or Google Home. If you do not have a Matter Hub or use the Matter platform, you can still link the thermostat directly to voice assistants on the User page.
• Child Lock: Turn on/off the child lock. Press and hold the "Mode" button for 3 seconds to temporarily unlock the child lock.
• Schedule: View and edit daily schedules with target temperatures and times for different periods throughout the week.
• Preferences: Customize settings such as switching differential, screen brightness, temperature presets, hold actions (temporary temperature overrides), and temperature units (°F / °C).
• Advanced: Check and adjust advanced settings, including calibration, open window detection, frost protection, and summer mode.
• Energy Usage: Track and export heating usage data.

FAQ

What kind of heating system can MTS200 work with?

The MTS200 works with multiple high/line voltage (120-240 VAC) heating systems, such as Baseboard, Self-Contained Hydronic, Convector, Fan-Forced, and In-Ceiling Radiant systems. It does not work with 24VAC HVAC systems.

Warranty

Meross products are covered by a 24-month limited warranty from the date of purchase. For detailed warranty policy and product registration, please visit: https://www.meross.com/support/warranty

Disclaimer

1. The function of this smart device is tested under typical circumstances described in our specifications. Meross does not guarantee that the smart device shall perform exactly the same as described under all circumstances.
2. By using third-party services, including but not limited to Amazon Alexa, Google Assistant, Apple HomeKit, and SmartThings, customers acknowledge that Meross shall not be held liable in any way for the data and private information collected by such parties. Meross's total liability is limited to what is expressly covered in its Privacy Policy.
3. Damages arising from ignorance of the SAFETY INFORMATION shall not be covered by Meross aftersales service, nor does Meross take any legal responsibility therefrom.

Customers acknowledge understanding of these articles clearly by reading this manual.

FCC Compliance Information Statement

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator & your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

Support and Contact

For support and further information, please visit:

• Support: www.meross.com/support
• Website: www.meross.com
• Email: support@meross.com

Compliance Information: CAN ICES-3/NMB-3. Made in China. Indoor Use Only. Confirmed to UL 60730 & CAN/CSA E60730.

Supervisor: Chengdu Meross Technology Co., Ltd.

Address: Floor 3, Building A5, Shijicheng Road No 1129, Gaoxin, Free Trade Trial Zone, Chengdu, Sichuan, China.