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Baseboard Smart Heat
Avoid the 24V thermostat mismatch with a compatibility-first guide to line-voltage electric baseboard, load ratings, and smart controls.
KALOR TECH AC603H Wi-Fi Smart Thermostat for Electric Baseboard Heaters
For homeowners with electric baseboard heaters, managing heat efficiently can be a hassle, especially in rental properties or vacation homes. This smart thermostat is designed for you, offering precise control over 120-240V systems to avoid wasted energy and high bills.
Unlike basic thermostats, it focuses on practical peace of mind. The included custom wall plate ensures a seamless fit in standard American electrical boxes, so installation is quick and secure. You can program heating schedules via the app, and the voice assistant compatibility lets you adjust temperatures hands-free from anywhere. A specific detail: the LCD screen clearly shows both current and target temperatures, so you always know your settings at a glance without guessing.
This device helps you reduce energy costs by heating only when needed, and the freeze protection feature keeps plumbing safe during unexpected cold snaps. It’s a reliable tool for maintaining comfort and control in your home.
Features
- Programmable via app for energy savings
- Includes custom wall plate for ensured fit
- Remote control via Smart Life and Tuya apps
- Fahrenheit LCD screen with temperature and time display
- Prevents plumbing freezing with freeze protection mode
- Compatible with Alexa and Google Home for voice control
General specs
- Brand: KALOR TECH
- Model: AC603H
- Seller: Amazon
- ID: B0BM6R3HPM
- Voltage: 120, 240
- Dimensions: 3.5, 1.75, 0.5
- Scheduling: Weekly
- Connectivity: Wi-Fi
- Display Type: LCD
- Power Source: Hardwired
- Mounting Type: Wall Mount
- Control Methods: App, Voice
- OS Compatibility: Android, iOS
- Compatible Systems: Electric Baseboard Heaters
- Smart Home Compatibility: Amazon Alexa, Google Assistant, Tuya
- First listed by seller: 2/4/26
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
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Top live offer
$75.95
Free shipping
New
Third-party seller
Shippable
Offers updated: 6/3/26
Price History for seller Amazon
Shipping options
Delivery to 
United States
United States
Available
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| Brand | KALOR TECH | Mysa | meross | MoesGo | Mysa | EdgeAnt |
| Model | AC603H | BB V2-0-L | MTS200 | 06-O0VS-LMKK | BB.2.0.01.NA-US | EHVC523-Mirror |
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| Rating |
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| Price | $75.95 | $99.00 | $69.99 | $129.99 | $159.00 | $99.99 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | May 20, 2026 | May 29, 2026 | May 29, 2026 | May 29, 2026 | May 29, 2026 | May 29, 2026 |
| Voltage | 120, 240 | 120, 240 | 120, 240 | 24 | 120, 240 | 24 |
| Dimensions | 3.5, 1.75, 0.5 | 4.65, 6.02, 2.48 | 2.95, 1.69, 4.64 | 5, 3, 7 | 3.5, 4.85, 1.57 | |
| Scheduling | Weekly | Weekly | Weekly | 7-Day | Weekly | 7-Day |
| Connectivity | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi | Wi-Fi |
| Display Type | LCD | LCD | LCD | LCD | LED | Mirror |
| Power Source | Hardwired | Hardwired | Hardwired | Hardwired | Hardwired | Hardwired |
| Mounting Type | Wall Mount | Wall Mount | Wall Mount | Wall Mount | Wall Mount | Wall Mount |
| Control Methods | App, Voice | App, Voice | App, Voice | App, Voice | App, Remote Control | App, Voice |
| OS Compatibility | Android, iOS | Android, iOS | Android, iOS | Android, iOS | Android, iOS | Android, iOS |
| Compatible Systems | Electric Baseboard Heaters | Electric Baseboard Heater, Fan Coil Unit | Electric Baseboard, Convector, Fan-Forced Heater, In-Ceiling Radiant | Air Conditioner, Electric Boiler, Electric Floor Heating, Fan Coil Unit, Gas Boiler, Hydronic Floor Heating, Water Heating | Electric Baseboard Heaters | Air Conditioner, Gas Boiler, Water Heating |
| Smart Home Compatibility | Amazon Alexa, Google Assistant, Tuya | Amazon Alexa, Apple HomeKit, Google Assistant | Amazon Alexa, Apple HomeKit, Google Assistant, SmartThings | Amazon Alexa, Google Assistant, Tuya | Amazon Alexa, Google Assistant, Apple HomeKit | Amazon Alexa, Google Assistant, Tuya |
| Material | Plastic | Plastic | Plastic | Plastic | ||
| Required | Required | Required | ||||
KALOR TECH AC603H White
$75.95
When this device makes sense
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