6ES7235-0KD21-0XA0 is a digital input module for industrial automation systems. It can efficiently collect the status signals of field devices and convert them into electrical signals that can be recognized by the control system. It is widely used in factory automation, process control, building automation and other fields.

The ABB REF610C11HCHN is a high-performance protective relay designed for industrial applications. It offers precise monitoring and control over electrical systems, ensuring safety and efficiency.

The Yokogawa NFSB100-S00 is a Signal Conditioner from the NFS series of DIN-rail mounted instruments. It is specifically designed as a Dual-Channel Isolator and Converter.
Its primary function is to accept two independent 4 to 20 mA DC analog input signals from field transmitters (e.g., pressure, temperature, flow), provide electrical isolation between the input, output, and power supply circuits, and convert each input into a corresponding 4 to 20 mA DC output signal.