HA104 automatic bollard cylinder material is 304 stainless steel , assure corrosion and rust resistance. Cooperated with SGS company, automatic bollard passed series of performance tests to guarantee bollard stable work ability, including continues 5000 lifting test, IP68 water proof and dust proof test, temperature test etc.. According to different types, equipment lifting time could range from 3 until 5 seconds. With emergency release system, power outage or other emergencies, can be artificially lower, release vehicles.