... real-time monitoring temp.,RH% wholesale CO2 sensor with USB data logger CO2 sensor with USB data logger Description: The ... , officebuildings, greenhouses and so on. CO2 sensor Features:Real-time monitoringcarbon dioxide (CO2) measurements during 0ppm to 20,000ppm ... from 0 to 100%RH Non-dispersiveinfrared (NDIR) CO2 sensor withself calibration, 15 years lifetimeThe 3-LED indicatorlights indicate ...