conductive level switch / for liquids

The DRS-303 is manufactured by Simex. It is a liquid sensor type, that is especially designed for conducted liquid presence detection. T parameters of the detector are constant to allow detection of actual presence of liquid on its electrodes and to be resistant for low impedance conducted surfaces, like wet fingers.

It also has additional reference electrode, which prevents detector against false signalling when the surface is covered with liquid. The PUSH-PULL output of the device enables connection either to devices equipped with direct or inverse logic inputs.