Fisher Controls 4157 Pressure Switch Control Panel is a compact module that uses a 20 PSI supply and provides a 3–15 PSI output. It is designed to monitor and control pressure within Fisher Controls process instrumentation setups, offering a switch-based interface for automated responses at a 3–15 PSI range. Ideal for integration into industrial process control environments, the 4157 delivers a defined output pressure derived from a 20 PSI source.
