It allows you to display the value read in the system and provides 3 buttons that can be used as inputs. The module is enclosed in a 36×72 mm panel housing with a 14 mm display in the front part. The value shown on the display reflects the value from the Modbus register of the device. It is possible to display numbers from -999 to 9999. The display of fractional numbers is possible by setting the position of the comma anywhere by the corresponding register. The buttons on the front of the device can be used as control signals. Each time the button is pressed, it changes the value of a single register, so it is possible to read how many times the button has been pressed since the last reading of its state.