A point of sale device includes a point of sale functional component, such as, for example, a display, an input device, a printer, scales, a card reader, or other. An interface is connected to the component, through a standard port of the component. The interface includes a radio frequency communications function. The interface communicates information regarding the component over a wireless communication network. The wireless communication network connects to a maintenance gateway for the device, either via the network, other networks, or by other communicative connection. The device can be monitored and maintained by the maintenance gateway, and the maintenance gateway can be located at a remote location from the device. The interface can also include cooling elements and controls for the device and/or the interface.