The Tuson TPMS Display Power Cable now makes ID pairing your Tuson Towable Tire Pressure Monitoring System's (TPMS) sensors to the TPMS display/receiver easier than ever before. Just insert a 9 volt battery inside the Tuson TPMS Display Power Cable box, plug it into your TPMS display/receiver DC jack, and turn on the switch, the Tuson Towable TPMS display/receiver is now portable and ready to use!