The Honeywell TR50-5D Humidity and Temperature Sensor is a wall-mounted indoor air quality monitoring device designed for commercial HVAC and building automation systems. It measures temperature, relative humidity, carbon dioxide, particulate matter, and total volatile organic compounds, displaying readings for convenient monitoring. Using BACnet, Modbus, or Sylk communication protoco... https://www.partshnc.com/tr50-5d-honeywell-temphumidco2-iaqsensor-config-