The switch consists of a sturdy nickel plated steel body with a built-in fused glass prism. This allows liquid to be optically detected by a solid state opto-electronic module. The solid state module is encapsulated in silicon. It can be easily replaced without disturbing the system.

• For oil, refrigerants, any noncorrosive, nonhazardous fluid
• Fluid temperature rating: -40°F to 210°F
• Working pressure: 1200 psi, 6000 psi burst
• Requires 3.5 mA AC, 5.5 mA DC
• Minimum load: 2 mA (without bleed resistor)