E Instruments_AQ Pro 300The AQ Pro by E Instruments, Langhorne, Pa, facilitates indoor air quality monitoring and real-time data analysis for hospitals and labs. The compact, handheld device includes multiple parameters, allowing users to customize up to three gas sensors at one time. The standard model includes CO2, temperature, relative humidity, barometric air pressure, and differential pressure, and is upgradeable to add volatile organic compounds (VOC), formaldehyde, O2, NO2, SO2, and H2S. An active internal sampling pump and magnetic rubber boot are included. Embedded Bluetooth, PC software, and a USB port enables real-time data logging. The unit has a lithium-ion battery and is designed and manufactured in the United States. For more information, visit E Instruments.