Phoenix Contact 2902003 A three-way signal conditioner with plug-in connection technology provides electric isolation for analog signals, allowing for safe transmission and processing. The input signal can range from 4 milliamperes to 20 milliamperes, while the output signal is isolated between 0 volts and 10 volts. This device enables secure communication by decoupling the electrical circuitry of the input and output, ensuring reliable operation in sensitive applications.