mechanical refrigerator control solution that integrates seamlessly into existing wiring harnesses using standard spade terminals

rectangular design allows for precise placement in restricted unit heater housings

ensuring the motor windings receive stable power factor correction

ensuring the fan operates correctly during both heating and cooling calls

Siemens Building Technology QPA2000 Sensor 30067439-890 mechanical refrigerator control solution thatThe Siemens QPA2000 is a high precision room air quality sensor engineered to monitor CO2 concentration in commercial HVAC systems. Designed for demand controlled ventilation (DCV), this unit provides a linear 0 10Vdc output signal corresponding to a 0 2000 PPM CO2 range, ensuring optimal indoor air quality and energy efficiency. It serves as the 90DM3ASM 1 replacement, offering a seamless fit for legacy system upgrades. The sensor utilizes a