Wireless White Room Controller T-4.2 Tech

The Wireless White Room Controller T-4.2 Tech is a state-of-the-art thermostat designed for precise temperature control in residential and commercial environments. Operating on a reliable 868 MHz RF communication protocol, it seamlessly integrates with Tech L-series and M-series main controllers. Its backlit LCD display and intuitive interface make programming effortless, while advanced features like PID/hysteresis control, frost protection, and child lock ensure optimal comfort and safety.

Advantages

This room controller offers exceptional accuracy with a temperature measurement precision of ±0.1°C, allowing for fine-tuned climate management. The adjustable hysteresis range (0.2–4°C) and multiple programming modes (weekly schedule, manual, holiday) provide flexibility to suit any lifestyle. The wall-mounted design and white finish blend discreetly into any interior, while the IP20 protection class ensures durability in dry indoor spaces.

Suitable for

• Homes and offices requiring precise temperature regulation
• Integration with Tech L-series and M-series main controllers
• Users seeking a programmable, non-smart thermostat with battery operation

Key specifications

• Product Type: Wireless Room Controller / Thermostat
• Communication Protocol: 868 MHz RF
• Power Supply: 2x AAA 1.5V Batteries
• Display: Backlit LCD
• Temperature Measurement Range: 0–50°C
• Temperature Setting Range: 5–35°C
• Temperature Measurement Accuracy: ±0.1°C
• Control Algorithm: PID / Hysteresis (Adjustable)
• Hysteresis Range: 0.2–4°C
• Programming Modes: Weekly Schedule, Manual, Holiday
• Special Features: Frost Protection, Child Lock, Screen Brightness Adjustment
• Compatibility: Tech L-series and M-series Main Controllers
• Mounting Type: Wall-mounted
• Color: White
• Protection Class: IP20
• Sensor Type: Built-in Temperature Sensor
• Operating Temperature: 0–40°C

Recommendations

For optimal performance, use high-quality alkaline AAA batteries and ensure the controller is mounted away from direct sunlight or drafts. Pair with a compatible Tech main controller to unlock full scheduling and remote adjustment capabilities.