• MLS Mechanical Float Switch
  • Sliding float stops slowly slide back and forth into place. The MLS goes into a tank and the float goes up and down with water. Light is off when float rises, and on once it hits the top stop as the water lowers.
  • MLS in a tank. One float stop above and one below the float. It is activating a red light. Top float labelled "on" and the bottom labelled "off".
  • Mechanical Float Switch

Mechanical Float Switch


Flexibility in the Field

Tailor this float switch to your needs in the field with an adjustable switch point and hysteresis.


Direct Pump Control
MLS Series float switches have a 10 A SPDT miniature switch for direct control over small horsepower pumps.

Field Adjustable
The two float stops on the stem of an MLS Series float switch are field adjustable for optimum switch point control. Simply loosen the screw on the float stop, slide it up or down, and tighten it again.

Mechanical Hysteresis
MLS Series float switches switch on when the float hits the top float stop, but does not switch off again until the weight of the float itself lands on the bottom stop. This mechanical hysteresis is ideal for pump control.

Common Model Configurations

All common model configurations can be purchased online, click the model number link below. Refer to Model Number Configurator on the datasheet for a full list of configuration options.

Model Number Model Description
MLS-2S Neoprene Protective Bellows, 1 meter rod

Additional model configurations are available on our online store.

Datasheets & Downloads


1 NO, NC Adjustable Switch Point
Adjustable Mechanical Hysteresis
Minimum SG


Output Contact Rating
250 V 10 A AC; 250 V 0.4 A DC (resistive)


1 10 A SPDT miniature switch


Float & Rod
Protective Bellows


Operating Temperature
32 to 176° F
Enclosure Protection