Abstract: The present invention is a liquid sensing device used for in determining the presence or absence of liquid in a container by the presence or absence of electrical current flow between two conductive probes. Moreover, the present invention prevents the false indication of liquid as can result from the presence of foam, or from bridging of the probes at the proximal ends thereof. A main body portion is formed of an electrically conductive material and has a probe channel extending therethrough. A non-conductive plug is inserted into the proximal end of the probe channel and provides for the retaining of a conductive probe that extends along the central axis of the probe channel. An end cap is secured to the distal end of the main body and covers the distal end of the probe channel for preventing foam access into the probe channel.