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SST LLC-700D3LSH Digital Liquid Level Sensor

SST LLC-700D3LSH Liquid Level Sensor
Regular price $39.00 USD

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SST Sensing's Optomax Digital Liquid Level Sensors are switches that change state in the presence of any water-based liquid or oil. The switches are used primarily for leak detection, high or low-level liquid detection, and liquid level control. They are not suitable for continuous level measurement.

The micro-controller based sensor is solid state, incorporating an infra-red LED and photo transistor which are optically coupled by the tip when the sensor is in air. When the sensing tip is immersed in liquid, the infra-red light escapes making the output change state. The sensor can detect the presence or absence of almost any liquid type; oil or water based. It is insensitive to ambient light and is not affected by foam when in air or by small bubbles when in liquid.


  • Solid State, no moving parts
  • Fast response time
  • Repeatable switching point
  • Compatible with most fluids and chemicals


LLC-700D3LSH- SST Optomax Industrial Liquid Level Switch

Other models not in stock - SST offers over 175 different variations of liquid level sensors. View a list of all models that can be ordered via quote. After you select a model number send us a request for quote and we will return a quote with prices. Expect 2-3 weeks for delivery.


  • Suitable for oil or liquids
  • Operating Temperature: -25C to +80C
  • Pressure: 7 bar / 101 psi Max
  • Response time: < 4s


  • Polysulfone PES
  • Dimensions: 23.4 x 19 mm overall
  • Internal external with 19 mm flange
  • Type 7 1/4" NPT Thread
  • 1.5 Nm / 13.26 in-lbs max torque


  • 3 wire V+, 0V, output
  • 4.4 to 15.4VDC
  • 100mA Max
  • Output Low in Air Logic


  • 90 days - See GasLab Terms and Conditions.


Datasheet Data Sheet

Operational Guide Operational Guide

Dimensional Drawings Dimensional Drawings

reference chart Model Cross-Reference Chart. With over 175 variations, this document helps you pick the liquid level sensor that is right for your application.

reference chart All Model List. All product variations not available in stock for custom requests for quotes only. Expect 2-3 weeks for delivery.

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"Swift response and shipment. The product is easy to setup and use. It is just what I was looking for."

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