Multifunction and electronic timers are designed for controlling different applications. Many of the applications requiring timers are now using programmable logic controller’s (PLC’s) but timers are still used widely in engineering. Electronic timers offer higher precision than the older style mechanical timers due to the inclusion of modern digital electronics. Timers are used to measure time and time intervals which can then be used for industrial control logic circuits. These are used to control various applications such as auto starts, LED indication and machine sequencing.