The McDonnel & Miller Series 751P/752P probe type LWCOs provide protection against low water conditions. The 751P/752P is for commercial and industrial applications. These controls are fully CSD-1 compliant. Furthermore they are primarily used as LWCOs on hot water heating boilers.

Features and benefits

  • 120V/24V Models available
  • Green LED indicates power On
  • Red LED indicates Low Water
  • Test button
  • Meets requirements of ASME Standards CSD-1
  • No lock out with loos of power if probe is in water
  • 20,000 ohms probe sensitivity

Extra product images

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