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The SST Liquid Level Sensor provides single-point liquid detection via a TTL-compatible push/pull output. Its miniature optical design allows installation in tight spaces where traditional float switches won't fit.

An infrared LED and phototransistor are precisely positioned at the base of the sensing tip to maintain good optical coupling in air. When the tip is immersed in liquid, infrared light escapes from the cone, changing the light reaching the phototransistor and triggering an output state change. With no moving or mechanical parts, the sensor is resistant to jamming and wear.

Key Features

  • Optical Sensing – Solid-state design with no moving parts
  • Supply Voltage – 4.5 VDC to 15.4 VDC
  • Output Current – 100 mA maximum
  • Operating Temperature – −25 °C to +80 °C
  • Polysulphone Housing – Chemical-resistant sensing tip
  • M12 Threaded Connector – Mounts from outside the enclosure

Ideal For

  • Tank and reservoir level monitoring
  • Leak detection systems
  • Aquarium and hydroponics automation
  • Industrial liquid presence sensing

Package Contents

  • 1× SST Liquid Level Sensor

Resources

The SST Liquid Level Sensor appears in the following collections:

SKU SF-SEN-13835