Type: Carport
Place of origin: Fujian, China
Brand name: Keytop
Model number: Key-b02
Current rating: 3.5mA
LED luminance: 9000mcd
LED luminance(RED): 5000mcd
LED number: 6RED+6Green/Blue
Shell: ABS
Working temperature: -50C--+80C
Visual angle: 360°
Visual range: >50m
Type: LED indicator

2 How parking guidance systems / parking system work
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 when occupied, or it will keep GREEN;
Meanwhile, the UD transmit its status message to ZCU
immediately, and ZCU will collect and forward the
information to CCU;
CCU processes these data and sends the relevant command to
ZCU and LED panel.