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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.
OJ Microline UWG4-4999 Electric Radiant Floor Heating Thermostat
For homeowners installing or upgrading electric radiant floor heating, the OJ Microline UWG4-4999 thermostat delivers precise control and energy savings. Set a schedule for your tile or laminate floors and let the adaptive learning adjust run times to maintain comfort while reducing costs.
The intuitive touchscreen and install wizard make setup straightforward. Monitor and adjust from your phone using the WiFi app—perfect for vacation mode or tweaking the temperature before you arrive home. Power logging provides detailed energy usage reports. With dual sensing (air/floor) and a built-in GFCI, this thermostat is safe for wet rooms like bathrooms.
Target temp for a cozy morning bathroom floor? The responsive screen and 7-day program handle it. The included floor sensor protects wood and laminate from overheating. 15-amp load can control secondary relays for larger systems. 3-year warranty.
Features
- Intuitive touch color screen
- Programmable 7-day scheduling
- GFCI Class A protection
- Dual voltage 120V/240V
- Dual sensing air/floor
- Adaptive self-learning function
- Child lock and vacation mode
- Open window detection
- Power logging reports
- Wi-Fi enabled remote control
General specs
- Brand: OJ Microline
- Model: UWG4-4999
- Seller: Amazon
- ID: B0858G9B21
- Type: Electric Radiant Floor Heating Thermostat
- Code Id: 20060
- Voltage: 120V, 240V
- Features: Child Lock, Vacation Mode, Open Window Mode, Temporary Overrides, Power Logging, Adaptive Function, Install Wizard
- Warranty: 3-Year Limited Factory Warranty
- Gfci Rating: Class A
- Load Rating: 15 Amps @ 120V (1800W), 15 Amps @ 240V (3600W)
- Screen Size: 3.5 inches
- Screen Type: Responsive Touch Color
- Control Type: WiFi Programmable
- Programmable: 7-day
- Sensing Type: Dual Sensing (Air/Floor)
- Logging Power: Detailed energy usage reports
- Remote Control: Yes
- WiFi Compatibility: Android, iOS
- Included Accessories: Floor Sensor
- Safety Certification: C-UL-us Listed, Certified for Wet Room installations
- Suitable Floor Types: Tile, Marble, Carpet, Concrete, Laminate, Wood
- Floor Limit Temperature: +41 to +104°F (+5 to +40°C)
- Control Relay Secondary: Yes
- Ambient Range Temperature: +32 to +104°F (0 to +40°C)
- First listed by seller: 5/28/26
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
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New, Used and Refurbished describe the item condition shown for that Amazon offer.
Top live offer
$195.00
Free shipping
New
Third-party seller
FBA
Shippable
New from
$195.00
Only from New + Shippable live offers
New offers
Third-party seller
· FBA · Shippable
$195.00
Third-party seller
· Shippable
$195.00
Third-party seller
· Shippable
$195.00
Offers updated: 6/1/26
Shipping options
Delivery to 
Russia
Russia
Available
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| Brand | Nuheat | Ardex | HEATIT | |||
| Model | UWG4-4999 | DHERT104/BW | Signature | UH 930 | UWG5 | |
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| Price | $195.00 | $310.00 | $266.42 | $189.68 | $69.90 | $194.90 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | May 28, 2026 | May 29, 2026 | May 29, 2026 | May 28, 2026 | May 29, 2026 | May 20, 2026 |
| Voltage | 120V, 240V | 120V, 240V | 120 V, 240 V | 120 V, 208 V, 240 V | ||
| Warranty | 3-Year Limited Factory Warranty | 4-year limited | 3-year limited | |||
| Control Type | WiFi Programmable | WiFi Smart, Programmable, Voice Control | WiFi, Bluetooth, Voice Control | |||
| Programmable | 7-day | Yes | Yes | |||
| Floor Limit Temperature | +41 to +104°F (+5 to +40°C) | 95°F | +41 to +104 °F | |||
OJ Microline UWG4-4999 Wi-Fi enabled remote control
$195.00
When this device makes sense
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