The 90-293Q is the designated direct replacement and provides the same electrical specs and mounting footprint as those discontinued or alternate models

the 0121627 is the official Watts lead-free replacement for the 5300A-1/2 and the older 0391600 models

Can this sensor be used for supply air sensing

if the vacuum is sufficient but the switch remains open

Upgrade or service your Lennox condensing unit with the Lennox 89M76 Dual Run Capacitor

Johnson Controls P170AB-2 Pressure Control Els PW 17895 The 90-293Q is the designatedThe Johnson Controls P170AB 2 is a heavy duty single pole single throw (SPST) low pressure control engineered for critical cycling and high pressure cutout applications. This industrial pressure switch operates with an open low action, featuring a versatile pressure range from 20" Hg to 100 psi. Designed for reliability in commercial refrigeration and HVAC systems, it handles non corrosive refrigerants including R 22, R 404A, and R 134a. The unit