Fail-Safe Reliability: True spring return functionality ensures 100% closure or opening during power outages

High-Efficiency Performance: Operates at 1050 RPM 208V to provide stable torque and airflow for fans and air-handling components

meaning the switch will automatically reset once the temperature drops to 140°F

it supports a broader range up to 150 PSI

While designed as a three-phase non-reversing starter

Siemens Building Technology QPA2062 Sensor 320074-702 Fail-Safe Reliability: True spring returnThe Siemens Building Technology QPA2062 Sensor is a multi parameter room air quality sensor engineered for high demand HVAC and building automation systems. Built for professional grade reliability, this unit integrates a Non Dispersive Infrared (NDIR) CO2 gas sensor with active temperature and relative humidity monitoring to facilitate precision Demand Controlled Ventilation (DCV). The 0 2000 ppm CO2 measuring range provides a stable 0 10V or 4 20mA