The TST TST-507-FT-4-C 507 Series Flow Thru Sensor TPMS System is a semi-universal tire pressure monitoring sensor designed for RVs, trucks, vans, and more. With its flow thru sensor technology, this TPMS system provides accurate tire pressure readings and alerts for increased safety on the road. The product is manufactured by TST and is compatible with various vehicle models, making it a versatile and reliable option for maintaining optimal tire pressure in commercial and recreational vehicles.