Robinairs 80211VCI VCI Wireless Master Kit gathers and transmits vehicle year, make and model information to your Robinair A/C machine to find the correct refrigerant charge amount, oil type and oil amount so systems are serviced properly. The dongle also reads generic OBDII fault codes to assist in diagnosing issues within the vehicles A/C system. The included USB WiFi/Bluetooth receiver enables communication between the OBDII dongle and your A/C machine. A software update SD card in the kit enables over-the-air software updates on your machine, including future refrigerant capacity database and machine performance enhancements. After connecting the A/C machine to WiFi with this kit, it will download the current refrigerant capacity database. Kit contains the Robinair OBDII VCI, USB adapter cable, USB WiFi/Bluetooth receiver, and A/C machine software update SD card. For use with Robinair new platform machines 34288NI, 34788NI, 34788NI-H, 34988NI, and AC1234-4.