ELS-950/950M – Optical Level Switch

The ELS-950M Series represents Gems™ smallest optical level switch developed to monitor a broad range of media including OHV type fluids.

Our UL approved design features a rugged brass housing, a TPE over-molded electronics insert, TPE insulated wires, and flourocarbon o-ring seals that create a watertight, environmentally resistant assembly, ideally suited for use in harsh environments.

The ELS-950M is excellent for industrial OEMs requiring a solid-state sensor for small space and high temperature environments.

Typical Applications

  • Coolant reservoir monitoring and warning
  • Medical diagnostic, sterilizer, washers and dialysis equipment
  • Low lubricant warning on machine tools, generator sets, on- or off-highway vehicles
  • Low level warning in hydraulic reservoirs
  • Plastic over flow bottles, plastic radiators
  • Leak detection for drip pans
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Operating Pressure
0 to 250 PSI (17 bar), Maximum
Operating Temperature*
-40°F to +257°F (-40°C +125°C)
Current Consumption
4 mA, for 5 Vdc (No Load) / 10 mA for 12 Vdc (No Load)
May Sink 40 mA. max., up to 30 VDC
±1 mm
Shock Tested
CE approved per EN 61000
Housing Material
ELS-950 - Polyethersulfone
ELS-950M - Brass