All functions all use internal electronic input and output has a corresponding button. In addition to having a conventional input and output functions,resistance, PT100.Cu50 RTD, thermocouple eight kinds of signals can be input and output, measure negative temperature. Two connector terminals can be used regardless of input and output. It is easy to operate. Increase disposable fast blow to avoid false instrument damage caused by 220V plug. The sensitivity of thermal resistance and resistance to external excitation output current is reduced. Increase the output and the measurement accuracy. For both constant and non-constant resistance measurement method, expanding the usage of the instrument., Manufacturer: PokFhgur