OJ Microline UWG4-4999 Wi-Fi Floor Heating Touchscreen Thermostat

Delivers smart, intuitive control for electric floor heating systems. With app connectivity, voice assistant support, and detailed energy monitoring, it combines convenience, safety, and efficiency in a sleek touchscreen design.

$189.00

Availability: Sold In Store - Ships From Store (10 available in store). (More Info)

Shipping: Free to Continental US (More Info)

SKU
MH UWG4-4999

OJ Microline UWG4 Wi-Fi Floor Heating Thermostat — Smart Touchscreen Control

The OJ Microline UWG4 Wi-Fi Floor Heating Thermostat combines advanced connectivity, sleek design, and intuitive touchscreen control for effortless comfort management. Designed for electric underfloor heating systems, this smart thermostat provides convenient remote access through the OJ Microline app, allowing users to control and monitor home heating from anywhere.

With voice control compatibility via Amazon Alexa and Google Assistant, the UWG4 offers a modern, hands-free experience. Its 3.5" full-color touchscreen, interactive setup wizard, and customizable scheduling make operation simple for both homeowners and installers. Built with safety and precision in mind, the thermostat includes a Class A GFCI, energy logging, and universal floor sensor compatibility, ensuring optimal performance for a variety of flooring materials.

Key Features and Benefits

  • Wi-Fi Connectivity and App Control — Manage your floor heating remotely via the OJ Microline app (available for iPhone and Android)
  • Voice Assistant Compatible — Works seamlessly with Amazon Alexa and Google Assistant for hands-free operation
  • 3.5" Color Touchscreen — Intuitive and easy-to-navigate interface with dedicated screens for each function
  • Smart Setup Wizard — Step-by-step installation guidance for quick configuration and error-free setup
  • Flexible Scheduling — Simple event-based programming with up to 6 events per day
  • Energy Usage Monitoring — Track and store detailed power consumption data via your online user account
  • Advanced Control Options — Choose between room temperature, floor temperature, or combined modes with customizable floor protection levels
  • Universal Sensor Compatibility — Works with most existing floor sensors, ideal for both new and retrofit installations
  • Safe and Durable Design — Built-in Class A GFCI and high-quality components ensure reliable performance
  • Multi-Language and Child Lock — Supports English, French, and Spanish, with safety lock options for households

Specifications

Model UWG4-4999 Type Wi-Fi Programmable Touchscreen Thermostat
Voltage Supply 120 / 240 VAC, 50/60 Hz Load Capacity 15A maximum (resistive load)
Power Output 1,800 W @ 120 V / 3,120 W @ 208 V / 3,600 W @ 240 V GFCI Protection Class A (5 mA trip level)
Temperature Range +41°F to +104°F (+5°C to +40°C) Floor Limit Range +41°F to +104°F (+5°C to +40°C)
Floor Protection (Laminate/Wood) 82°F (27.5°C) Floor Protection (Tile) 88°F (31°C)
Ambient Temp. Range +32°F to +104°F (0°C to +40°C) On/Off Differential 0.7°F (0.4°C)
Regulation Principle PWM / PI Enclosure Rating IP20
Floor Sensor Type NTC (10 KΩ) 15 ft (4.5 m) Display 3.5" Color Resistive Touchscreen (65k Color)
Dimensions (L x W x H) 3.19" x 1.97" x 5.08" Warranty 3-Year Limited Warranty

Downloads

UWG4-4999 Wi-Fi Touchscreen Thermostat - Product Data Sheet
UWG4-4999 Wi-Fi Touchscreen Thermostat - User Manual
UWG4-4999 Wi-Fi Touchscreen Thermostat - Product Brochure
UWG4-4999 Wi-Fi Touchscreen Thermostat - Quick Guide
OJ Microline Electric Floor Heating Product Catalogue
When is My Thermostat Produced
Exchange of Front Plate on UWG4 and UDG4
Troubleshooting Fault Codes Guide
How to Connect to Google Assistant and Amazon Alexa
Declaration of Conformity

More Information
SKUMH UWG4-4999
UPC799456732374
Non-ReturnableNo
ManufacturerOJ Electronics
Manufacturer Part NumberUWG4-4999
Voltage120/240
Weight (lbs.)0.75
Dimensions (L x W x H)3.19" x 1.97" x 5.08"
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Customer Questions
My thermostat is not keeping eastern standard time. It seems to lose three hours from time to time. Is there a way to address this issue?
Here is a link to the UWG4 User Manual from OJ Electronics. Page 21 "Set Time" you might want to un link it from the server. And Set Time Manually. Depending where you are the server might be delivering inconsistent information. Also you could check directly with OJ electronics on possible causes. Here is the User Manual Link: https://ojelectronics.com/floorheating/wp-admin/admin-ajax.php?action=productdownload&media_id=65425848&view=true. And here is a link to their Tec. Support: https://ojelectronics.com/floorheating/contact/
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