OJ Microline UDG4 Touchscreen Programmable Heated Floor Thermostat w/Class A GFCI - 120/240v Radiant Heat Thermostat - Dual Sensing - Includes Floor Sensor - 3-Year Warranty & USA Product Support
OJ Microline UDG4 Touchscreen Programmable Heated Floor Thermostat w/Class A GFCI - 120/240v Radiant Heat Thermostat - Dual Sensing - Includes Floor Sensor - 3-Year Warranty & USA Product Support
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30-Day Hassle-Free Returns
30-Day Hassle-Free Returns
Not satisfied? Return your order within 30 days for a full refund or exchange — simple and easy.
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✔ Processing time: 1–2 business days
✔ Delivery time: 3–7 business days
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About This
- INTUITIVE TOUCHSCREEN - Easy to use with a touchscreen interface, this programmable radiant floor heat thermostat with Class A GFCI (Ground Fault Circuit Interrupter), for Electric Radiant Floor Heating Systems. Dual voltage (120V/240V) Dual Sensing (Air/Floor). Suitable for Tile, Marble, Carpet, Concrete Laminate and Wood floors.
- PROGRAMMABLE - OJ's Intuitive 7-day program helps provide maximum comfort, while reducing operating costs. Programming is made easy with the OJ's new Install Wizard and Interactive Touchscreen. The new Adaptive function offers a self-learning, self-adjusting operating system - maintaining set temperatures while adjusting run time to help reduce energy consumption.
- 3.5" RESPONSIVE TOUCH COLOR SCREEN - with a sleek and modern design blends seamlessly into your surrounding decor. Use one of OJ’s premium radiant floor thermostat to improve comfort levels, reduce running costs and compliment your décor.
- ADDITIONAL FEATURES INCLUDE - Child Lock, Vacation Mode, OPEN Window Mode, temporary overrides, power logging and more. All of these are essentials for an electric floor heating system to be efficient and safe. Power logging provides detailed energy usage reports direct to your PC or mobile device - putting the control where it belongs. OJ Microline Floor Heating Thermostats are C-UL-us Listed, Certified for Wet Room installations and come with a 3-Year limited factory Warranty.
- TECHNICAL INFO - Load: 15Amps (1800w@120v), (3600w@240v), with Ability to control secondary relays. Floor limit range: +41 to +104°F (+5 to +40°C) Amb. Temp. range +32 to +104°F (0 to +40°C). Includes floor heat sensor and floor limiting features for laminate and wood floors.
Overview
- Brand : OJ Microline
- Model Name : UDG4-4999
- Controller Type : Touchscreen Programable
- Special Feature : 7-day, 4-event Program
- Color : White

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SMART HOME FAQ
Yes — many modern devices support multiple platforms.
Matter-certified devices can work across Alexa, Google Home, and Apple HomeKit at the same time.
Not always.
Smart bulbs, plugs, cameras, and video doorbells are often easy DIY installations, while full security systems may need professional setup.
Many devices still work manually or through local control.
You may lose remote app access, but locks, lights, and thermostats often continue basic functions.
Security depends on the device and setup.
Use strong passwords, trusted brands, firmware updates, and secure Wi-Fi for better protection. Privacy and unauthorized access are common concerns in smart homes.
Most homeowners start with:
Smart Security Cameras
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Smart Thermostats
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Yes.
Smart thermostats and smart plugs help reduce wasted energy by automating heating, cooling, and power usage.
It depends on your ecosystem.
Alexa → widest compatibility
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Apple HomeKit → best privacy
Home Assistant → advanced control
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