It does not require any modification to the appliance store or the standard commercial laundry washer or dryer to operate vending "Cashless". Simply connect the 220~240 or 110~120 power cord to the XCP VendaVolt Nayax Cashless Payment Station. Inside of the top of the coin box of the washer is a microswitch. The microswitch has a red and white wire attached to it. Connect the 2 wires from the XCP VendaVolt Cashless Payment Station to these 2 wires. Installation complete! The Nayax credit card terminal sends a switch closure that triggers the microswitch to start the machine. Does not interfere with with timing or any other feature of the washer or dryer. The washer/dryer thinks it received payment from the coin slide mechanism. VendaVolt Nayax touch screen can have 1 6 different prices and times. Contact XCP Corp for more information [1] 3526783021 or website store; www.xcpcorp.com. [email protected]