... bus 4.Hexadecimal address set TUS-100 Parking Guidance System(PGS) Ultrasonic Detector Inroductions:This products is mainly ... design, better adaptability to the environment; advanced ultrasonic testing methods, no false judgements caused by the external environment ... whether a vehicle is present 2. Scope: Vehicle counting system, parking spaces guidance system3. Detection method: Ultrasonic Ranging ...