Water level sensor

Stainless steel liquid level float switch,
45mm - 75mm - 100mm - 125mm - 150mm - 200mm - 300mm - 500mm - 1000mm
 
Liquid level float switch (on / off switch). It has a float fitted with a magnet that moves vertically along the guide tube. The float causes the contact blade to close or open under the influence of the buoyancy of the liquid.

They are usually mounted on the bottom or on the lid of the tank. Can be used to control the lower or upper liquid level. By changing the position of the float, you can change the reed switch function from open to closed.

The sensor can be used for different types of liquids, e.g. water, waste water, oil.