Because if the collapse occurs, the Microcontroller or damaged, we can also signal Pulse from the switch, including if the switch is a push button, the collapse still could buy the device is easy to change.
If Microcontroller Was broken or damaged, we can switch from Pulse signal generator includes a push-button switch that, if broken, it can also be purchased easily replaced.
Because if Microcontroller. The broken or damaged, we can also signal Pulse from pressing the switch includes if the switch is the grapevine press down snap can buy equipment to change easily.