KH400 colour LCD display paperless recorder has multi-channel input function, maximal quantity of input are 40 channels. It has full isolated omnipotence function on input type which suitable to various transmission signal including thermocouple, thermal resistance, standard voltage, standard current and pulse frequency. It has password protection function. The normal memory is 64 MB. The increscent memory is available to realize by as desired. 　　KH400 has communication interface RS232, RS485 and USB, long-distance configuration and data management are available by upper computer through 10MB speed ETHERNET interface, long-distance control through MODEM telephone dial-up or wireless data transmission is also available.