air pressure switch / differential / HVAC / IP54
SIEMENS Building Technologies
Min.: -30 °C (-22 °F)
Max.: 85 °C (185 °F)
7,500 Pa (1.09 psi)
The QBM81 is a differential pressure switch specifically designed for monitoring under and over pressure in ventilation as well as air conditioning plants. This tool has a pressure of 20 to 5000 Pa, single pole changeover output, an IP54 protection class and a temperature range of 0 to 70 °C.