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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.
KING K902-W WiFi Smart Programmable Thermostat: Large LCD touchscreen display
Upgrade your home comfort with the KING K902-W Hoot WiFi thermostat. Designed for electric heating systems like baseboard and radiant heaters, this double-pole line voltage thermostat gives you precise control from anywhere. Use the Hoot app to adjust the temperature while you're on the couch or away for the weekend. The large touchscreen makes it easy to set a schedule with up to six time periods per day. The electronic sensor keeps the temperature within 1°F of your setting. You can also lock the max temperature to prevent overheating, ideal for kids' rooms or rental properties. Over-the-air firmware updates ensure you always have the latest features. Installation is straightforward with the 4-wire design, and it works with 120V, 208V, or 240V systems without needing a neutral wire. This thermostat is a smart upgrade for any home with electric heat.
Features
- Programmable with smartphone app
- Multi-volt rated 120/208/240V
- Double pole line voltage 4-wire
- OTA firmware upgradeable
- Temperature range 41-90°F
- User defined max temperature lock
- Program 4 or 6 time periods daily
- Electronic thermistor accurate ±1°F
- For baseboard, fan, radiant heaters
- Large LCD touchscreen display
General specs
- Brand: KING
- Model: K902-W
- Seller: Amazon
- ID: B09B2V7VF5
- Brand: KING
- Model: K902-W
- Connectivity: WiFi
- Display Type: Large LCD Touchscreen
- Product Name: WiFi Line Voltage Smart Programmable Thermostat
- Sensing Type: Electronic Sensing with Thermistor
- Voltage Rating: 120V, 208V, 240V
- Temperature Range: 41°F - 90°F
- Compatible Heaters: Baseboard, Fan Forced, Radiant Electric Heaters
- Firmware Upgradeable: Over-The-Air (OTA)
- Lock Max Temperature: User Defined
- Programmable Periods: 4, 6
- Temperature Accuracy: ±1°F
- Wiring Configuration: Double Pole, 4-Wire
- Smart App Compatibility: Hoot Smart Phone App
- First listed by seller: 5/20/26
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
$185.07
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Third-party seller
Shippable
New from
$185.07
Only from New + Shippable live offers
New offers
Third-party seller
· Shippable
$185.07
Third-party seller
· Shippable
$252.93
Offers updated: 5/31/26
Shipping options
Delivery to 
Russia
Russia
Available
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| Brand | KING | Nuheat | Honeywell | Honeywell | ||
| Model | K902-W | Signature | RTH9580WF | TH8321WF1001 | ||
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| Price | $185.07 | $75.99 | $266.42 | $188.68 | $70.23 | $139.99 |
| Seller | Amazon | Amazon | Amazon | Amazon | Joom | Amazon |
| Update | May 20, 2026 | May 29, 2026 | May 29, 2026 | May 29, 2026 | Feb 14, 2026 | May 29, 2026 |
| Connectivity | WiFi | WiFi | Wi-Fi | WiFi | ||
| Type | WiFi Smart Thermostat | Programmable Thermostat, WiFi-Enabled Thermostat, Dual-Voltage Thermostat | Touchscreen Thermostat | |||
| Compatibility | Amazon Alexa, Google Assistant, IFTTT, Control4, Crestron, Elan, RTI, iOS, Android | Apple iOS, Android | Stages up to 3 Heat / 2 Cool | |||
KING K902-W White Large LCD touchscreen display
$185.07
When this device makes sense
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