Sporlan 101711 Regulator 319847 401 Technicians will find this ambient Technicians will find this ambient air temperature sensor reliable for harsh environments where industrial grade weatherproof HVAC sensors are required to maintain tight deadbands and peak system efficiency Verify the data plate voltage on the existing unit before ordering Field Flexibility: Features a manual opening stem and access fitting for easier system evacuation and pressure monitoring during commissioning Wide Operation Range: Capable of handling refrigerant vapor or liquid across a set point spectrum of 10" Hg to 400 psig with a 450 psig design pressure