The data from the master clock is received through a 3 – core Cable using the Serial mode of communication & it is processed and displayed using Microprocessor-based circuitry. The time is displayed using RED LED displays. The Slave Clock in addition to being synchronized with the MASTER has its own RTC chip with Battery backup ,which continues to work independently providing normal Clock functions during a link failure with the master. All these inbuilt safety factors makes it a very reliable CLOCK system