OJ Microline UDG4 Touchscreen Programmable Heated Floor Thermostat – 120/240V, Dual Sensing, GFCI, 3-Year Warranty

Overview

Elevate comfort and safety for electric radiant floors with the OJ Microline UDG4 thermostat. This modern device features a responsive touchscreen, Class A GFCI protection, and dual voltage support, making it a versatile fit for a range of heating installations. It works with multiple flooring types and includes a floor sensor to help you dial in warmth where it matters most, from chilly mornings to cozy evenings.

Smart, adaptable climate control

The UDG4 combines intelligent scheduling with adaptive learning for consistent temperatures while aiming to optimize energy use. A 7‑day programmable program, an Install Wizard, and an Interactive touchscreen simplify setup and daily adjustments, giving you precise control without guessing.

• 7‑day programmable schedule for varied daily needs
• Adaptive, self-learning operation to maintain comfort efficiently
• 3.5" responsive color touchscreen with modern design
• Dual sensing (air and floor) for balanced warmth

Safety, versatility, and integration

Safety is at the core with Class A GFCI protection, wet-room listing, and support for secondary relays. Additional features include power logging, Open Window Mode, Vacation Mode, and a Child Lock, all designed to help you manage heat safely and transparently.

• Class A GFCI protection for electrical safety
• Power logging delivers energy usage insights
• Vacation and Open Window modes to prevent energy waste
• Wet-room certified and compatible with a range of spaces

Floor and temperature ranges

The UDG4 supports precise floor and ambient temperature control. Floor limit ranges from +41 to +104°F (+5 to +40°C) and ambient temperatures from +32 to +104°F (0 to +40°C). It includes a floor heat sensor and floor limiting features suitable for laminate and wood floors.

Compatibility, installation, and support

Designed for electric radiant floor heating systems, this thermostat is suitable for Tile, Marble, Carpet, Concrete, Laminate, and Wood floors. Dual voltage (120V/240V) operation, C‑UL‑us listing, and a 3‑year factory warranty with USA-based product support add confidence to installation and ongoing use.

What you get

UDG4 includes a floor heat sensor and is backed by a three-year warranty. The combination of precise control, safety features, and energy reporting provides flexible, reliable operation for a variety of radiant floor projects.