1.How are parking system works? The main .... below about some of them: 1 April, 2007 700 cars Singapore causeway point( OEM) 2 April, 2007 300 cars Singapore NorthPoint shopping plaza( OEM....
How PGS Works: Firstly, UD takes use of ultrasonic wave to detect the car space to see if it is occupied by vehicles and transfer relative command to LED Indicator which will turn from green to RED....