The MWTC-REC wireless receivers support up to 48 MWTC miniature sensor / transmitters. The MWTC-REC1 connects to a PC via a 6 foot USB cable while the MWTC-REC5 is a dongle the size of a flash drive that plugs directly into the USB port of a PC. Both receivers allow you to display, chart, and save data from multiple MWTC sensor / transmitters in real-time using the free downloadable TC Central software. The MWTC product line is only available in North America.