An electrically controlled door lock (11) provided with a blocking member (21) and a detent (20), the blocking member being in contract with an electrically controlled actuator (24) such as a piezo-electric member which is used to control movement of the blocking member which in turn causes either the release of a locking member (12) from a door to allow the door to be opened or the engagement of the locking member to prevent the door from being opened.