A timer is a type of time-switching device that controls and controls electrical circuits and electrical and electronic devices through time setting (on/off). The timer is basically 8-pin. Like other controlling devices the timer has a coil and when this coil is magnetized, the timer works on/off. The timer has two common ends and each common end has normally close and normally open options. When the timer is set by time, the timer trips at the end of that time and turns the common’s normally closed (on) to open (off) and normally open (off) to close (on). This is how the timer works.

The traffic light system is a visual control system to highlight swing line quality or quality problems. The traffic light quality system works essentially the same as the transport traffic light system. In this system, three different colored cards are used in each operator’s machine. A green card indicates quality meets customer or buyer standards. A yellow card indicates a minor or minor error has been found and requires attention. A red card indicates that the quality standard does not meet the customer’s standard at all.