... anti-scratch and anti-burstuse the car paint, three layer spraying processFeature:1. steady function, sensitive reaction, low noise2 ... flow. Without fading ,waterproofing, not rusty, durable.3.high sensitive limit switch, pole can be instant turn on ... extendable Blacklist capacity: 10000 (extendable)Card number capacity : 50000 High Quality Car Parking Barrier System,Secure Parking Car Camera TEC-T5