Starting at $60.00
  • Usually ships in 2-3 weeks



  • Withstands Rough Service
  • Excellent Stability
  • Brass or Stainless Steel Stem and Mounting
  • Buna-N or Teflon Float
  • 1/8” NPT process connection
  • Electrical Termination: No. 18 AWG, 24˝, Polymeric Lead Wires
  • Float Diameter: 1-1/4”
  • Switch: SPST, 20 or 100 VA, selectable N.O. or N.C. by inverting float on unit stem
  • Operating Temperature:
    • Buna-N Float: Water: to 180°F; Oil: -40 to 230°F
    • Teflon Float: -40 to 250°F
  • Maximum Pressure:
    • Buna-N Float: 150 PSI
    • Teflon Float: 300 PSI
  • U.L. Recognized and CSA Listed


The Gems LS-1800 series level switch provides long life and dependability to meet a broad range of requirements. Providing excellent stability for general use in oils and water, the LS-1800 is an intermediate size switch with a large float displacement capable of withstanding rough service applications. The LS-1800 is also suitable for high viscosity liquids.

The LS-1800 series is available with brass or stainless steel stem and mounting materials and Teflon or Buna-N floats. All combinations provide rugged reliability and broad heat and pressure capabilities. The LS-1800 series is equipped with an SPST switch, 20 or 100 VA, which is selectable N.O. or N.C. by inverting the float in the unit stem. The LS-1800 series uses a 1/8" NPT process connection and 24" Teflon jacketed lead wires.