No C Wire Options
Compare no-C-wire smart thermostats by power method: included adapters and extenders, battery power, and the line-voltage systems to rule out.
meross MTS300 Black, 24V Smart Thermostat
Available offers (5)
Current
Black, 24V
Retailer
€50.80
Available to order
Features
- Works with Matter, Alexa, Apple Home, Google Assistant
- 7x24h scheduling for energy saving
- App and voice control for on-the-go use
- Requires C-wire for proper functionality
- Easy DIY installation in under 30 minutes
- Smart alerts for system malfunctions and filter life
General specs
- Brand: meross
- Model: MTS300
- Seller: Retailer
- ID: B0F99GVDVY
- Connectivity: Wi-Fi
- Power Source: Wired
- Control Methods: App, Voice
- Smart Home Platform: Google Home
- Programmable Schedule: 7-Day
- Voice Assistant Compatibility: Alexa, Google Assistant
- First listed by seller: November 9, 2025
If you are interested in more details, you can find full information on the seller's page.
Price History for seller Retailer
Shipping options
Delivery to 
United States
United States
Available
For the busy homeowner juggling work and family, this smart thermostat brings effortless control to your daily routine. Imagine adjusting the temperature for your arriving kids while still at the office, ensuring they walk into a cozy home after school. It’s not just about home automation; it’s about simplifying your life and keeping your family comfortable without extra effort.
The flexible scheduling lets you set a weekly plan that runs automatically, so you never come back to a chilly house. You’ll notice the app’s alerts pop up right when your filter needs changing, giving you a heads-up before any issues arise. With easy voice commands through Alexa or Google Assistant, you can make changes hands-free while cooking dinner. Installation is straightforward—follow the app’s guide, and you’re set in minutes, ready to start saving on energy bills by tracking your usage.
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meross MTS300 Black
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| Brand | meross | LUX | vine | Emerson | LEVOIT | Honeywell |
| Model | MTS300 | TQ1 | B0FFBC4MV4 | ST75W | Aura 400S | RENEWRTH9585WF/U |
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| Price | €50.80 | €66.88 | €71.33 | €222.94 | €71.79 | €70.43 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Jun 24, 2026 | Jun 24, 2026 | Jun 24, 2026 | May 19, 2026 | Jun 24, 2026 | May 29, 2026 |
| Connectivity | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi |
| Power Source | Wired | Hardwired | Wired | Hardwired | Hardwired | |
| Control Methods | App, Voice | App, Buttons, Voice | App, Voice | Touchscreen, App | App, Touchscreen, Voice | Touchscreen |
| Smart Home Platform | Google Home | Google Home | Google Home | |||
| Voice Assistant Compatibility | Alexa, Google Assistant | Alexa, Google Assistant | Alexa, Google Assistant | |||
| C-Wire | Required | Required | Required | |||
| Dimensions | 3.54, 3.54, 1.1 | 4, 4, 1 | 4.5, 3.5, 0.88 | |||
| Scheduling | Weekly | 24/7 | Flexible programming | |||
| Display Type | LCD | LCD | Color LCD | LCD | Touchscreen | |
| Mounting Type | Wall Mount | Wall Mount | Wall Mount | |||
| Compatible Systems | Air Conditioner, Electric Boiler, Electric Floor Heating, Fan Coil Unit, Gas Boiler, Hydronic Floor Heating, Water Heating | Air Conditioner, Heat Pump Systems | Forced air (gas, oil or electric), Hot water and steam, Heat pumps with electric backup | |||
meross MTS300 Black
€50.80
When this device makes sense
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