Sea-Dog Round Rainbow Voltmeter w/USB & USB-C Power Socket

The Sea-Dog Round Rainbow Voltmeter with USB and USB-C Power Socket is a dual-charging power distribution panel designed for marine, mobile, and field applications where simultaneous device charging is essential. This compact unit combines real-time voltage monitoring with modern fast-charging capability, delivering 6A total output distributed across two independent charging ports.

The rainbow dial voltmeter provides visual voltage status at a glance, enabling users to monitor system health during operation. The USB 3.0 port supports Quick Charging (QC) for compatible devices, while the USB-C port features Power Delivery (PD) technology for faster, more flexible charging negotiation. Power allocation splits dynamically at 3A per side as needed, ensuring neither port starves the other during simultaneous charging. This configuration allows efficient charging of phones, tablets, and portable power banks without voltage sag or thermal throttling on either device.

Operators and field personnel use this voltmeter in vehicles, portable power stations, and onboard marine systems where monitoring electrical integrity and maintaining multiple devices are mission-critical. It suits patrol vehicles, off-grid camps, boat electrical systems, and any installation where space is limited and voltage visibility is required. The round faceplate design integrates into standard panel cutouts found in automotive and marine environments.

This unit bridges legacy USB infrastructure with modern USB-C power delivery standards, making it practical for mixed-device environments. The compact 3 × 2 × 5 inch footprint minimizes installation footprint while maintaining readable dial visibility and robust connector access.