Beko 300 TR Cash Register POS device supports 3 different payment methods: cash, coupon and credit card. To pay with the payment method you wish, first, the sales amount is entered on the device, and the relevant part is selected. Afterwards, in case of payment with cash or credit card, the said options are keyed. If you wish to pay with coupons, payment is made by clicking the function (fonksiyon) key first and then the coupon (kupon) key. In coupon and credit card payments, a payment amount above the sales amount cannot be entered.