... . 8-point recording (Option), completely photoelectronic isolation, universal input.7. Communication function (Option)RS485 MODBUS communication is available. ... 3.5'', 320*240 TFT color LCD displayInput Signal Input TypeReference RangesThermocoupleBSKEJTN300.0 to 1800.0°C-50 to ... .000 to 20.000mADigital I/O5 channels-dry-contract input, input resistance: ≤4.7KΩOutput Module2 channels relay alarm output ...