meross Smart Thermostat for Home, WiFi Thermostat Works with Matter, Alexa, Apple Home, Google Assistant, App & Voice Control, 7x24h Scheduling, Energy Saving, C-Wire Required
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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 5 left in stock, order soon!
Arrives
Wednesday, Sep 3
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Color: White
Features
- Note: This wifi thermostat requires a C-wire (common wire) for proper functionality. If your HVAC system does not have one, you can search for "meross C-wire adapterto purchase a compatible adapter. This thermostat only supports 2.4GHz Wi-Fi networks
- Professional After-Sales Team: If you have any questions, please dont hesitate to contact our phone support. Working Hours: 10:30 AM - 7:30 PM (EST), Mon-Wed, Fri-Sat
- Smart Schedule: Set it and forget it! The flexible schedule plans allow you to customize your heating and cooling routine, ensuring your home is always at the comfort temperature. The smart thermostat can automatically follow the schedule even when Wi-Fi is disconnected
- On-the-Go Control: Easily monitor and control your thermostat for house via smart app at anywhere anytime
- Save on Energy Bills: Track your heating and cooling usage with the Meross app to conserve resources and save money
- Smart Alerts: Stay informed about filter life, system malfunctions, and long-term operation. With meross wifi thermostat, you'll have peace of mind knowing that your HVAC system is functioning properly
- Designed for DIY: Easy DIY installation with this smart thermostat in under 30 minutes. Just follow the setup wizard of the Meross app
Brand: meross
Model Name: MTS300
Product Dimensions: 0.9"D x 3.6"W x 3.6"H
Special Feature: Portable, Temperature Display, Lockable, Low Voltage, Programmable
Brand: meross
Model Name: MTS300
Product Dimensions: 0.9"D x 3.6"W x 3.6"H
Special Feature: Portable, Temperature Display, Lockable, Low Voltage, Programmable
Color: White
Specific Uses For Product: Boiler, Air Conditioner, Heat Pump, Furnace, Dehumidifier
Temperature Control Type: Heating and Cooling
Connectivity Technology: Wi-Fi
Included Components: Smart Wi-Fi Thermostat x 1, Screws and Anchors x 3, Wiring Sticker ×1, User Manual ×1，Trim Plate x1, Backplate ×1
Power Source: Corded Electric
Voltage: 24 Volts
Shape: Square
Display Type: LED
Control Type: App Control
Control Method: Voice
Connectivity Protocol: Matter, Wi-Fi
Mounting Type: Wall Mount
Style: For 24V HVAC Systems
Global Trade Identification Number: 67
Manufacturer: meross
Part Number: MTS300
Item Weight: 9.6 ounces
Item model number: MTS300
Size: Normal
Item Package Quantity: 1
Special Features: Portable, Temperature Display, Lockable, Low Voltage, Programmable
Batteries Included?: No
Batteries Required?: No
Date First Available: February 23, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Sep 3
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
Color: Black
The meross Smart Thermostat has been a great upgrade for my home. Installation was quick and painless, and I really appreciated how easily it connected to Apple HomeKit and Matter. The app is simple to use, scheduling works reliably, and remote access has already come in handy a few times. It’s a budget-friendly option that doesn’t feel cheap, solid performance, clean design, and full smart home compatibility. Definitely recommend it if you want smart control without the high price tag. My house is full of meross smart devices so, I'm overall very happy with this product. M~
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Reviewed in the United States on July 14, 2025 by Matthew Brokamp
Color: White
This thermostat offers exceptional quality and convenience when installed properly and connected to Apple HomeKit. I've never installed a thermostat before but was able to do this with ease; customer support helped me without delay. C-Wire is an important aspect, since that is required for your unit to work, so you will want to ensure your setup has it. If not, you will need to get a Power Extender Kit, which I ultimately did, and found both products to be worth it. I chose to try the smart thermostat after having great luck with Meross smart plugs. Overall the brand quality is great. The features that work well for this unit include advanced calibration settings, a dedicated app, scheduling, and comfort levels that can be customized according to the user. Connectivity to WiFi was a breeze and I highly recommend this product looking for a smart home upgrade.
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Reviewed in the United States on May 7, 2025 by A. A.
Color: White
I have used Meross smart thermostat for about 3 weeks. It very easy to use and works great with Apple HomeKit. The installation was very easy. My HVAC system had all the required wires including the c-wire, so replacing the old thermostat with Merros was straightforward. After connecting all the wires I used the Meross app to complete the setup and added the thermostat to Apple Home app. I only use the Home app to control the thermostat as it integrates well with my other Home devices and allows to group them together when creating automations and scenes. And the Siri control works very well too - I have yet to experience a Siri request that would not do what I asked for. The unit itself looks good on the wall, I used the back plate to mount the thermostat and it seamlessly blends the unit with the wall. I like the large temperature display, you can see it from anywhere in the room even when it's dimmed. This is another nice option you can configure - a few seconds after the last button touch the display dims a little (you can see the dimmed display on the first picture). Touching any buttons, or sending a command from the phone or through Siri, brings the display to full brightness (second picture). Meross app has the Usage Dashboard, which could be very helpful to estimate the cost of electricity used for cooling and heating. However to get the cost estimate you need to enter the cooling and heating cost per hour and I don't know how to calculate this data for my HVAC system. One feature I wish was available in the Home app and Siri is to turn on/off the fan only. You can do that using a button on the thermostat, but I control it mostly through Siri. I contacted Merross support, which was very responsive, and they told me that fan only control is not supported in the Matter protocol, that's why it cannot be added to the Home app. Overall I'm very happy with the functionality and automation this thermostat provides. This is the first smart thermostat I used and I can't imagine going back to an old fashioned non-smart thermostat.
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Reviewed in the United States on June 17, 2025 by Mikolaj Zuberek Mikolaj Zuberek
Color: White
Works great, the only problem was the temperature was off out of box by -2 c. Good thing you can calibrate it.
Reviewed in the United States on July 19, 2025 by steven
Color: Black
Got this during Prime week. Pulled everything out of the box and tried to read directions. I’m not super tech savvy so they didn’t really make a lot of sense. HOWEVER- Meross has a set up video. However I actually found on YouTube someone swapping out the same old thermostat I had for the new Meross one. Wasn’t perfect but wasn’t terribly hard either. Wish the space for wires was larger for those with larger hands. We used needle nosed tweezers to get the wires in place. Also Make sure to use the anchor for the screws . I didn’t but will have to go back and add. It’s got a bit of wiggle to it but to be VERY CLEAR this was operator error, not the product. Set up was really really easy on the Meross app. I have several Meross products and am well pleased with this one . You can use via the Meross app or like me link it to Alexa - again I’m not tech savvy and it was very very easy - it detected it’s self and Alexa asked if I wanted it linked when I opened the app. I had zero issues with connecting it via WiFi even though it’s probably time for my router to be replaced as it can be intermittent. I’ve had no issue with the thermostat. Don’t be alarmed when you are first set up- we did in the middle of July in the south - and first thing the Heat turns on . I was panicking trying to figure out what I did wrong but after a minute the a/c started up. I guess it was just testing everything ? But it works great! I really dont reccomend the printed instructions - instead watch a video- it makes it much easier . Bottom line - it’s a really good value . The price was good especially for the quality. Easy set up - just watch a video on YouTube and in the app it fairly well gets its self started with minimal operator effort. I give it five stars . This would also be a great gift for elderly or not so tech savvy people simply due to ease of use. It also had interesting features I did not expect - like a humidity measure.
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Reviewed in the United States on July 21, 2025 by Christina h. Christina h.