2 fans including thermostat (adjustable from 0 to 35 °C), 6.4 m³ air circulation per minute. The Digitus roof fan unit for wall-mounted cabinets is designed for installation in the roof module and consists of two fans. It features an on/off switch and includes a thermostat that can be adjusted from 0 to 35 °C. The noise level of the roof fan unit is 47 dBm.