Check the listing for details. Carrier HH79NZ024 Sensor. Color: Gray, Condition: New. Listed at 225.00 USD. The Carrier HH79NZ024 Sensor is a gray-colored probe sensor designed specifically for Carrier brand HVAC systems. This sensor is compatible with Carrier models, providing accurate readings for controlling temperature and humidity levels in HVAC systems. As a crucial part of the HVAC and refrigeration industry, this sensor ensures efficient performance and reliability in commercial and industrial settings.