it was my understanding that even if your trailer is shorter in length the transmitter assists with assuring communication between sensers and screen when passing, being passed or riding alongside other vehicles with similar or like tire pressure systems as to not have interference or loss of signal??
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Chuck
2019 3121RL 35 ft., 2020 3500 Dodge Ram SRW, Cummins 6.7 HO, Air Bags - Air Lift BT Wireless Compressor, Coloma, Wisconsin
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