These are the systems in which the central clock main unit sends the time information received from the satellite by GPS to all subordinate clocks connected to it at the same time and all subordinate clocks display the same time information at the same time.

Analogue and digital slave clocks can operate separately or in combination. Secondary clocks can be selected as single-sided or double-sided according to their usage.

Central clock systems are used in a wide range of applications and industries, including the healthcare industry, education, aviation and defense, broadcasting, radio and telecom, network systems, financial services, emergency operations and call centers.