Supco SHP400300 Pressure Switch R-407C It is not designed to

It is not designed to regulate system pressure during standard operation and should only activate when system limits are exceeded

Contractor-Ready Hardware: Comes standard with a clevis for immediate mechanical connection

The standard connectors are designed for 1/4" OD rigid tubing

you bypass the calibration issues common with standard altitude boards

Supco SHP400300 Pressure Switch R-407C It is not designed toThe Supco SHP400300 High Pressure Switch is the direct engineering update for the legacy 5680 pressure switch, providing reliable system protection for HVACR refrigeration units. Built as an encapsulated, non adjustable pressure control, this SPST switch features a 400 PSI cut out (Open) and a 300 PSI cut in (Close) to prevent compressor damage during high side pressure spikes. Designed for direct mounting, it includes a 1 4" SAE female flare fitting