The Socket Sized Dual DC Voltmeter is a practical and versatile product that allows for easy monitoring of auxiliary power. With 2 digital displays, it provides accurate readings of 10-60 volts. Designed to fit most round socket panels and compatible with various marine makes and models, this voltmeter is a convenient tool for power management. Its compact size and user-friendly interface make it a must-have for anyone in need of reliable power monitoring.