https://automation.honeywell.com/ca/en/products/sensing-solutions/switches-and-controls/pressure-switches/pbn1-series-ultra-low-pressure-sensor
PBN1 Series Ultra Low Pressure Sensors | Honeywell
1 in-H2O to 50 in-H2O. SPNO. Senses air. Gage, vacuum, differential. Life: up to 20 million cycles. 8 psi or 15 psi proof pressure.
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https://www.sens2b-sensors.com/en/item/bidirectional-low-pressure-sensor-125-pa-in-soic-housing-sm9333
Bidirectional low pressure sensor 125 Pa in SOIC-housing - SM9333 - Sens2B | Sensors Portal
low pressurebidirectionalsensorpasoic