Overview
The Potter Brumfield 2IO-16C is a proven relay-based I/O module designed for real-time input sensing and output switching in industrial control systems. With 2 dedicated inputs and 16 relay outputs, this module provides straightforward point-to-point switching without complex software dependencies, making it ideal for retrofit applications and legacy system upgrades.
Key Features
- 2 Input channels for discrete signal acquisition
- 16 Relay output channels for load switching and device control
- 5V logic-compatible design for standard PLC and controller integration
- Modular architecture allows stacking with compatible input/output expansion cards
- High noise immunity and reliable contact closure for industrial environments
- Compact mounting for standard control panel integration
Technical Specifications
- Input Channels: 2
- Output Channels: 16 (relay type)
- Logic Supply Voltage: 5V DC
- Output Type: Electromechanical Relay
- Series: 2IO (TE Connectivity / Potter & Brumfield)
- Part Numbers: P&B 40E1268, 870401
- Application: Discrete I/O control, relay switching, legacy PLC modules
- Condition: Used, tested, fully functional
Typical Applications
- PLC input/output module replacement in existing control systems
- Discrete signal conditioning for sensor inputs
- Relay switching for motor starters, solenoid valves, and contactors
- Industrial automation system retrofit and upgrade projects
- Legacy system maintenance and spare parts inventory
- Stand-alone relay control for switching applications
Compatibility & Replacements
Compatible With
- 2IO series mounting boards and backplanes
- Potter & Brumfield modular I/O expansion cards (OAC, ODC, IAC, IDC series)
- Standard 5V DC logic controllers and PLC systems
- Industrial relay control cabinets and enclosures
Replaces / Drop-In Replacement For
- Potter & Brumfield P&B 40E1268
- P&B 870401 (alternate part number reference)
- Original equipment replacement for 2IO-16C installations
Works With
- Direct relay contact switching (no protocol required)
- Discrete 24V DC and AC output loads up to module rating
- Standard industrial control panels and enclosures
- Verify compatibility with your system integrator before ordering






