Parameters:
work temperature -20--80
rate voltage AC 110220V
frequency 50~60HZ
communication RS-485
baud 4800bps
distance 1000m

Functions:
1. Three digits are to show the available lots number and the arrow is to show the direction.
2. The led indoor screen will be installed at the crossings of car park.
3. The outdoor led screen will be installed at the entrance of car park or other outside place.

How Parking Guidance System 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 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.