... RS485 Modbus protocol .USB drive KH300AG Universal Paperless Temperature Data Logger.96x96x80mm,TFT color LCD.Universal 6 ... record, analysis the processes in various industry application for temperature, humidity,pressure, flow, frequency, vibration, current voltage ... max.2 output (4-20mA)Aux. power supply for sensor: 24VDCPrinting: RS232 printing portCommunication: RS485 communication portUSB: USB ...