The Lippert Tire LINC 4 Tire Pressure System Trailer Camper RV 2020106863 is a tire pressure monitoring system designed for trailers, campers, and RVs. It requires programming and has a compact size of 8.31×5.31×2.05 inches. Made of plastic, this system offers universal fitment and easy installation, making it a convenient and essential accessory for maintaining proper tire pressure and temperature levels. This a new item box is distressed and opened. Item was never used.