The liquid level reed sensor features an all inclusive design that has the magnet embedded in the float and a PCB mounted within the stem housing the reed switch and electronic circuitry. The stems can be as long as 250 mm for the plastic LS04 series and 2,000 mm long for the stainless steel LS05 series. They are also able to work with either hot and/or cold liquids and can have multiple sensing points and floats. The switches are dynamically tested for reliable switching.