this unit is engineered for 120V AC primary input only

including internal side-mount applications

Built with a 1/4" NPT connection and an acid-resistant stainless steel (AISI 316L) housing

it features brazed connections and internal thermostat motor protection to ensure operational stability under high-demand cycles

the Carrier 4662 maintains the high-evaporation performance required for consistent humidity control while preventing the distribution of "white dust" throughout the building’s ductwork and living spaces

Siemens Building Technology QPA2060D Sensor mario this unit is engineered forThe Siemens QPA2060D is a dual function room air quality sensor engineered for precise demand controlled ventilation (DCV) in commercial HAVC systems. Utilizing infrared absorption technology (NDIR) for CO2 monitoring, this unit delivers a stable 0 10Vdc output signal across a detection range of 0 2000 PPM. The integrated temperature sensing capabilities allow for simultaneous climate monitoring, reducing the need for multiple wall mounted devices.