Liquid level sensor (on/off) float. Designed for side mounting with a cover, using a sealing flange. The probe can control the upper and lower fluid level in the tank. Floating performance sensor with built-in magnet. The buoyant force of the liquid moves the float along the tube, which causes the built-in reed switch to close or open. The principle can be used to make a type, e.g. water, sewage, oil.