The Reznor 222754 Humidity/Temperature Sensor is a reliable HVAC control device designed to monitor both temperature and humidity levels for improved indoor climate management. Operating on a 15–35VDC or 15–24VAC power supply, it delivers a precise 0–10VDC output signal to compatible building automation and HVAC control systems. Commonly used with rooftop units, air handlers, ventilat... https://www.partshnc.com/15-35dc15-24ac-0-10vdc-output