The G4IDC5 is a digital DC input module with an input voltage range of 10-32 VDC. This module is compatible with Opto 22 brains and with a Raspberry Pi. The module is designed with filtering on the input and a hysteresis amplifier, providing high noise rejection and transient-free, "clean" switching.
The G4ODC5R5 is a reed relay, low-contact-resistance DC output. It is a single-pole, single-throw, normally closed mechanical relay (Form A, SPST-NC). It was designed for a low-voltage DC load that is purely resistive (no inrush current).
Typical applications for these modules include analog signal and communication line multiplexing. Because of their low 10 VA rating, these modules are not recommended for inductive or capacitive loads (even very small loads) because the inrush current is likely to exceed the 10 VA rating.
Applications using 120 VAC are typically NOT suited to this module.
Details of each module available on manufactures web site
Both modules are new/unused.