The mother clock uses color touch screen, which can display local time and UTC time at the same time. The mother clock uses two power supplies. The mother clock has GPS interface, which can provide time service for other systems. The mother clock has fault alarm output function. The mother clock and the slave clock adopt two-wire communication mode and have power supply and communication functions at the same time. The two-way communication between the mother clock and the slave clock can feedback the working state of the slave clock in real time. The mother clock has the function of adjusting the time of the slave clock forward and backward.

Two-wire communication has power supply and communication functions at the same time. Two-way communication between the master clock and the slave clock can feed back the working state of the slave clock in real time, and the master clock has the function of adjusting the slave clock time forward and backward.