This listing is for a USED Allen-Bradley 1794-IV16. It is designed for digital input control in Flex I/O systems. This unit is categorized as a PLC I/O module and includes the following capabilities: 16-point DC input, 24V DC voltage rating, and compatibility with Allen-Bradley Flex I/O systems.

This listing is for a USED Allen Bradley 1734-IB8/C. Provides 8-channel digital input capability for POINT I/O systems, supporting 24 VDC sink input signals for device monitoring and control integration within modular PLC-based automation platforms.

This listing is for a USED SIEMENS 6ES7 138-4FR00-0AA0.

This is a SIMATIC ET200S F-RO relay output module designed for safety-related applications. It features two normally open relay outputs, supports 24V DC logic, and handles load voltages from 24 to 230V AC/DC up to 5A. Fits a 30 mm slot in ET200S backplanes.

See photos for details.

Part No: 6ES7 138-4FR00-0AA0
Type: ET200S F-RO Relay Output Module
Condition: USED
Logic Voltage: 24V DC
Load Voltage: 24–230V AC/DC
Max Current: 5A
Channels: 2× NO
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This listing is for a USED Siemens 6ES7138‑4FA04‑0AB0 SIMATIC ET 200S digital input module. It is designed for safety‑rated PROFIsafe 24VDC input monitoring in ET 200S distributed automation systems. This unit is categorized as a fail‑safe digital input module and includes 4/8 channels, 24VDC operation, a 30 mm width format, and functional safety ratings up to PL E and SIL3.

This listing is for a USED Allen-Bradley 1794-IB16. It is designed for monitoring 16 discrete input signals in industrial automation systems. This unit is categorized as a Digital Input Module and includes the following capabilities: 16-point input, compatible with FLEX I/O systems, and DIN rail mounting.