Honeywell HAFUHH0300L4AXT Honeywell Zephyr™ Digital Airflow Sensors: HAF Series-High Accuracy, Unidirectional Flow, 22 mm OD Tapered Male Fitting per ISO 5356, 0 SLPM to 300 SLPM Flow Range, Digital I²C Address: 0x49, 3 Vdc to 10 Vdc Supply Voltage