The VPOS 3-in-1 Card Reader is an easy attachment to allow cashless payment on the air and vacuum machines. The VPOS 3-in-1 Card Reader accepts EMV Contact and EMV Contactless payments. Accepted credit cards include Mastercard, Visa, American Express as well as 50 other credit card types. Requires the Amit 3.0 Modem (RDC-EXCEL) and There is a standard $0.25 processing fee for every transaction. Compatible with SC05-SS, SC09-SS & SCWM-23.