Accessories include a field-replaceable humidity board with a calibration certificate, ensuring precise measurements and easy maintenance. The RO120 display provides real-time data visualization specifically for the RO120 humidity probe. An adapter board is also available for the RO120/RO120-B probe. A stainless steel fitting with a 3/4" NPT connection ensures secure connections. Additionally, a sample chamber with 1/4" tube fittings facilitates accurate measurements. For applications requiring barometric pressure readings, a field-replaceable humidity board with a barometric pressure sensor, also including a calibration certificate, is available. These accessories collectively enhance the RO120 series, making it a comprehensive and adaptable solution for various industrial monitoring needs.