Overview
The National Sonics C4390 PC93 circuit board, designated D 4389D, is a legacy control and sensing module designed for industrial applications. This printed circuit board assembly is part of National Sonics’ established line of precision electronics. Built for reliability and durability, it remains a practical solution for system upgrades, repairs, and integration into legacy or custom installations.
Key Features
- Original National Sonics manufacture
- Designed for industrial control and sensing systems
- Durable PCB construction
- Compatible with legacy National Sonics equipment
- Used, fully functional condition
Technical Specifications
| Manufacturer | National Sonics |
| Model Number | C4390 PC93 |
| Part Designation | D 4389D |
| Product Type | Printed Circuit Board (PCB) Assembly |
| Application | Industrial Control & Sensing |
| Condition | Used |
Typical Applications
- Legacy system restoration and repair
- Industrial control module replacement
- Sensing and monitoring equipment
- Custom system integration
- Equipment refurbishment projects
Compatibility & Replacements
Compatible With
- National Sonics Sensall control systems
- National Sonics equipment using C4390 or PC93 designations
- Legacy industrial control platforms
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Original National Sonics equipment documentation will confirm exact replacement eligibility for specific installations.
Works With
- National Sonics Sensall control architecture
- Legacy industrial sensing and monitoring systems
- Custom integration in retrofitted applications
