The Intermarine IME A1-A4 (also categorized as the ICA GMDSS series) is an IMO-approved, heavy-duty GMDSS Power Supply and Battery Charger. Unlike the IME-A1 Citadel unit (which is strictly for emergency backup), the A1-A4 series is a “Main Station” power management system designed to run a vessel’s entire GMDSS radio console across all sea areas ($A1, A2, A3, \text{and } A4$).

The IME A1-A4 series acts as the “electrical heart” of the bridge’s radio station. It manages three power sources (Main AC, Emergency AC, and Radio Batteries) and ensures that the GMDSS equipment never loses power, even during total vessel blackout.

• Intelligent Switching: It provides seamless, “no-break” automatic switchover between power sources.

• Battery Management: Includes a regulated, filtered 24V charger that monitors the state of the radio batteries and performs periodic automatic health tests (as required by SOLAS).

• Visual Monitoring: The front panel features a dedicated voltmeter and ammeter, along with status LEDs and a buzzer for alarm conditions (Mains Failure, Battery Low, etc.).