A signal converter is a device that converts a signal measured and sent by a sensor into an industrial current signal. Converts analog signals into analog output signals, unifies, or insulates them. Converts measured data with variations such as temperature, pressure, flow rate, etc. into easy-to-use electrical signals and outputs them. The input analog signal is a continuously changing amount, but the output is a digital signal whose value changes by an integer multiple. There are various types of signal converters, such as sensor input converters that convert measured physical quantities into electrical signals, isolators that insulate input and output signals, characteristic converters that linearize output characteristics, etc. Input signals and output signals can be set freely using switches, dedicated software, etc.