Abstract: An energy efficient electromagnetic latching relay circuit. A permananet magnet having an attached electrical contact is free to move between two positions a second electrical contact is situated so that it engages the first contact only when the permanent magnet is in one of the two positions, thus completing the relay circuit. The electromagnet includes a magnetizable core disposed within a current conducting coil situated so that the magnetic field resulting from current within the coil can move the permanent magnet between the two positions. The magnetic field also induces a residual magnetism with the core which either attracts or repels the permanent magnet, thus latching the relay. The current is provided by a current source. Further provided is a switch for selecting the direction of current flow through the coil.