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Dwyer Omega – PSW-681 Series OEM Mechanical Pressure Switch for Low Pressure and Vacuum
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Dwyer Omega – PSW-681 Series OEM Mechanical Pressure Switch for Low Pressure and Vacuum

Dwyer Omega – PSW-681 Series OEM Mechanical Pressure Switch for Low Pressure and Vacuum

Product Code: PSW-681

Manufacturer: Dwyer Omega


The PSW-681 Series is a compact, economical mechanical pressure switch designed for extremely low pressure and vacuum applications. Featuring a fixed deadband and SPST relay output, it offers reliable control in OEM systems requiring precise pressure monitoring. Its robust design ensures consistent performance in demanding environments.

  • Compound Range Covers Vacuum and Pressure in One Unit
  • Low Inch of Water Ranges
  • Silver Switch Contacts Rated for 5 Amps @ 250 Vac
  • 1 Amp, Gold-Plated Contacts for TTL or Dry Contacts
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