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For specialized applications
ensuring the sensor only reads actual water levels
Common Questions & Technical Support: What causes a pressure switch fault code on a Reznor unit
the range is 2-4
Siemens Industrial Controls 3RH2921-2DE11 Auxiliary Switch 320788-704 For specialized applicationsThe Siemens 3RH2921 2DE11 is a high performance auxiliary switch block designed for seamless integration with SIRIUS 3RT2 contactors and 3RH2 contactor relays. This front mounting module features a 1NO + 1NC (1 Normally Open 1 Normally Closed) contact configuration, engineered specifically for electronic compatible signaling in demanding industrial environments. As a direct replacement for the legacy 3RH1921 2DE11, it maintains a compact form factor