The Helios Fans ZTV 160 is a thermostatic ventilation valve constructed from durable white impact-resistant polymer. Inside, it features an insulated sound-absorbing film to prevent condensation accumulation. The valve is equipped with a built-in temperature sensor that automatically controls the valve opening based on ambient temperature, independent of outdoor conditions. It offers a sensor range from ‑5°C to +35°C and provides sound attenuation between 30 and 35 dB, ensuring quiet and effective ventilation performance.