The Omron SRT2-ID04 Remote I/O Terminal (Transistor Type) is a compact and versatile input module designed for industrial automation systems. It features 4 input points compatible with NPN (positive common) configurations, making it suitable for use with a wide range of sensors and switches in control applications.

As part of the SRT2 series, this terminal supports both long-distance and high-speed communication modes, which can be switched according to the system requirements. This flexibility allows the SRT2 series to be used in applications requiring extended transmission distances or faster data throughput.

The SRT2 series is available in several form factors to meet different I/O density needs: 4-point and 8-point models measure W80 x D50 x H48 mm, while the 16-point model is slightly larger at W105 x D50 x H48 mm, offering a compact solution for space-constrained environments.

The internal circuitry is electrically isolated from the I/O side, enabling the use of separate power supplies for the control logic and input devices. This isolation enhances system reliability and protects against electrical noise or ground loop issues.

Designed for flexible installation, the terminal supports both DIN rail mounting and screw mounting, providing adaptability for various enclosure and panel layouts. This dual mounting capability simplifies integration into existing systems or new installations.