The ICM401A Univeresal Phase Monitor is a high-performance, low-cost phase monitor designed for use in a wide variety of applications. It features a fast, low-power operation and a wide range of frequencies, making it ideal for use in industrial, medical, and scientific applications. The ICM401A Univeresal Phase Monitor is a high-performance, low-cost phase monitor designed for use in a wide variety of applications. It features a fast, low-power operation and a wide range of frequencies, making it ideal for use in industrial, medical, and scientific applications.