The GL220 is a top of the range multi input datalogger. It has a huge internal memory, a real time display screen (which can be used for data review). It can accept a wide range of inputs including 4-20mA, pulse, relay, thermistor and thermocouple. The unit can be connected to an ethernet network for real time data viewing from any other PC on the network,. It can log data down to microseconds, and the data can be stored internally or on a USB stick.