The EPP810 is vandal resistant and fully water proof conforming to IK09 & IP65 standards respectively. Since it operates both indoors and outdoors, it operating temperature varies from -20 C to 65 C. The EPP810 supports both RS232 & USB interfaces using 1 connector only. It is rugged and durable and conforms to Federal Communications Commission and European Conformity Class A standards. Part Details: PCI 4.0 SRED PINPAD, RS232