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Product Description
BX-1 Portable Auto Telephone for Marine Telephone
Product Introduction:
The ZD-2B Marine Telephone Terminal Box is a professional-grade, centralized interface and protection unit designed for the robust and reliable installation of marine telephone systems. Serving as the critical junction point between the vessel's main communication cable network and individual telephone sets, it ensures secure, organized, and maintenance-friendly connections in the demanding shipboard environment.
Drawing:

Technical Data:
| Signal Tone | 450±25 Hz Sine Wave |
| Voltage | 75±10V 25±3Hz Sine Wave |
| Transmitting consumption | ≤2dB |
| Cross-tone consumption | ≥67 dB |
| Suitable for | dual frequency telephone |
| Feed Voltage | DC24V |
| Power Supply | AC220V±10%1A;DC24V-25%/+ 30% 4A |
Key Features & Benefits:
*Centralized Connection & Interface Management.
*Rugged Marine-Grade Enclosure.
*Modular Terminal Blocks & Clear Labeling.
*Circuit Protection & Signal Integrity.
*Standardized Professional Installation.
*Broad System Compatibility.
Typical Applications:
*Main Telephone Distribution Frame Areas.
*Equipment Clusters (e.g., Bridge, ECR).
*Local Junction Point for Individual Telephone Sets.
*Ship Communication System Upgrades & Retrofits.
*Offshore Platform Communication Link Termination.
The ZD-2B Marine Telephone Terminal Box is an indispensable component for achieving a robust, organized, and serviceable marine telephone network. It enhances system reliability, simplifies maintenance, and provides a professional foundation for all onboard voice communication links.
Marine Automatic Telephone System:

Marine Automatic Telephone System Connection Diagram:
