Siemens Building Technology QPA2284.FWSC Sensor R-407A while the Carrier EF32CW035 is

while the Carrier EF32CW035 is preset

this is an authentic Source 1 part compatible with various brands under the Johnson Controls umbrella

DIN Rail Mounting: Snap-on design compatible with standard TH35 rails for fast

Engineered for HVAC outdoor installation with UV-resistant materials to prevent degradation

Siemens Building Technology QPA2284.FWSC Sensor R-407A while the Carrier EF32CW035 isThe Siemens QPA2284. FWSC is a high performance multi sensor room unit engineered specifically for integration with Siemens Terminal Equipment Controllers (TEC). This full featured HMI device streamlines indoor air quality management by simultaneously monitoring CO2 concentration, relative humidity, and room temperature. Designed for professional HVAC installations, it features a 0 2000 PPM CO2 range utilizing NDIR (Non Dispersive Infrared) technology