Control Fueling Process: The fueling area is responsible for controlling the fueling process, such as selecting the type of fuel and dispensing a specific amount. Users can select the desired fuel type via the keypad and set the amount of fuel to be dispensed.

Handle Payment Transactions: The payment area is responsible for handling payment-related transactions, such as choosing the payment method and entering the payment amount. Users can enter the amount or the quantity of fuel via the keypad to complete the payment process.

Auxiliary Functions: Other functional areas may include auxiliary functions such as checking balances and printing receipts. Users can check their account balance or obtain a fuel receipt via the keypad.

Preset Fuel Amount Key: If you wish to add a fixed amount of fuel, you can enter the desired amount of fuel (in liters) while in standby mode, then press this key to start fueling.

Preset Amount Key: Similar to the preset fuel amount, but instead of entering the amount of fuel, you input the amount of money. After entering the amount, press this key, and the screen will display a confirmation message before starting the fueling process.