replacing inefficient on/off cycling with proportional control

ensuring consistent CFM output across the heat exchanger

Built for heavy-duty operational environments

If the self-cleaning tip or the insulation is cracked or the pitting is severe

Siemens Building Technology QAA2230.EWNN Sensor 322838-752 replacing inefficient on/off cycling withThe Siemens QAA2230. EWNN is a high precision room temperature sensor designed for seamless integration into building automation systems. Utilizing a 10k Ohm Type 2 NTC thermistor, this sensor provides reliable resistance output signals to controllers, ensuring accurate environmental monitoring in commercial and institutional spaces. This specific model features a "blank front" without a logo or digital interface, making it ideal for clean