Abstract: A pressure sensor including a body, device for receiving pressure associable with a tube connected to a fluid-filled tank of an electric household appliance, wherein the level of the fluid is to be measured. It further includes a device for emitting electric frequency signal proportional to the pressure received; a device carried aboard the body, on which a plurality of response frequency values emitted by the emitting means associated with corresponding pressure values at the pressure receiving means, were recorded. The pressure sensor is used with a pressure reading system carried by the device for receiving pressure. The pressure reading system includes two devices for reading values recorded on the pressure sensor, i.e. pressure and frequency values; and electric frequency signals. The pressure reading system further includes a processing device for interpolating the pressure value associated with every signal on the basis of the values read by the reading device.

Abstract: A blocking device for a door of an electric household appliance in which a plate sliding on a support is selectively blocked in use in a engaging position with a striker of the door by a pawl selectively mobile between an extracted position and a retracted position from/into a sliding seat thereof, in which positions the pawl respectively engages/does not engage a perforation of the plate; wherein the pawl is selectively blocked in an extracted position by means of an electromagnet having a winding and a core mobile along the axis of the winding and operatively associated to a mobile slide parallel to the axis of the winding between a first and a second limit stop position, only in the first of which a protrusion of the slide cooperates with the pawl; a retaining device of push-push type being operatively associated on one side to the slide and on the opposite side to a pre-loaded spring sandwiched between the retaining device and a shoulder fixed in use to the support; the push-push device being configured t