Airflow monitor with mounting flange for installation in ventilation ducts. Visual indication of operating conditions (start - operation - fault) by LED. Calorimetric measuring principle 1 potential free contact The threshold can be adjusted continuously using a potentiometer. Setting range: 1 - 10 m/s If the limit is fallen down, the output relay drops out. Maximum immersion depth: 120 mm Ambient temperature: -10 - +50° C Protection type: IP 65 Power supply: 24V DC Switching capacity of relay contact: 3A / 250V Connection cable: 2 m, 4 x 0,5 mm²