Harmony Control. This level relay monitors the fill level as a limit switch and can also be used to control liquid levels in a 2-point control during filling and emptying. Binary sensors or switches are connected for this purpose (float switch, pressure switch, etc.). Two relay changeover switches are available for reporting, which can be loaded up to 5 A. The switching type of the sensors, the number of fill levels and the time delay of the relay outputs can be adjusted. The settings are made using control elements on the front, which can be protected against changes under a transparent cover. 3 LEDs show the device status. The wide-voltage power supply (24-240 VAC/DC) enables universal use. The cable connection is made using screw terminals.