If the sensor cable cannot be extended as such , it is still possible to use new intelligent extension cable(s) ZA9090-VKC with microcontroller for up to 100 meters. Two microcontrollers transmit EEPROM data from the sensor connector and measured data from digital sensors (DIGI) in both directions via RS485 and make this interference-resistant data available for the measuring instrument. Sensors can thus be freely interchanged as and when necessary (e.g. calibrated sensors with correction values, multipoint calibration or special linearisation (ZAxxxxSS).