Room thermostat Tech EU-T-4.2

Tech EU T-4.2 is a modern wireless electronic thermostat designed for precise and energy-efficient control of heating and cooling systems. The device automatically regulates the operation of boilers, heat pumps, or air conditioners, maintaining a comfortable indoor temperature with high precision — up to ±0.1 °C.

The T-4.2 model belongs to the latest generation of Tech EU controllers and stands out for its stable radio communication and extensive programming capabilities. With its weekly schedule and intelligent Optimum Start function, the thermostat determines when to start heating so that the desired temperature is reached exactly at the set time.

Main functions and advantages:

▪️ Precise temperature control — maintains a stable indoor climate with minimal fluctuations.
▪️ Weekly programming — allows you to set a unique heating schedule for each day of the week.
▪️ Day/Night modes — automatically adjusts temperature for sleeping and active periods.
▪️ Manual mode — temporary adjustment of settings without losing the programmed schedule.
▪️ Optimum Start function — intelligent algorithm calculates the ideal boiler start time to reach the target temperature on time.
▪️ Heating and Cooling modes — supports not only heating but also air conditioning and fan coil systems.
▪️ Adjustable hysteresis from 0.2–8 °C — fine-tunes thermostat sensitivity to temperature changes.
▪️ Wireless connection — stable communication between thermostat and EU-MW-2 receiver, which connects to the boiler or heating controller via a two-wire cable.
▪️ Support for external wireless temperature sensor (optional) — measures outdoor temperature and displays it on the thermostat screen.

Technical features:

▪️ Intuitive LED display with temporary backlight — clearly shows current/set temperature, modes, and time.
▪️ Built-in room temperature sensor — provides highly accurate measurements.
▪️ Optional outdoor sensor — installed in a shaded area, protected from rain and sunlight; transmits data every few minutes via radio signal.
▪️ Changeable communication channel (default No. 35) — prevents interference when using multiple devices.
▪️ Battery-powered (AAA) — autonomous, energy-efficient operation without mains connection.
▪️ Compact receiver included — ensures stable signal transmission and easy installation.

User benefits:

▪️ Comfortable indoor climate at all times.
▪️ Energy savings through precise temperature control.
▪️ Simple operation — intuitive menu and one-touch programming.
▪️ Optional external sensor for weather monitoring.
▪️ Reliable wireless connection and compatibility with modern heating systems.

Tech EU T-4.2 is a smart and reliable wireless programmable thermostat that adapts to your schedule and automatically ensures warmth and comfort in your home. It is ideal for boilers, heat pumps, fan coils, and air conditioning systems, combining precision, energy efficiency, and modern design.