You have a raspberry pi connected to all the sensors and a code running to trigger if the sensors are triggered. Each sensor and keypad would run to a different input on the pi. They should al be able to be powered with a single cell lipo. Is that what you are asking?
C. Intake, Compression, Power, and Exhaust. hope this helps
That is something you should may research on with yourself! Don’t accept a link
From strangers it’s preferred to find one that best suits you!