As a human who lives in the city, you must need to park your car in a parking lots where a parking barrier gate was installed. Sometimes you may drive your car and hit the barrier arm by accident, as a result the arm may be broken and your car got damaged too. However if the boom barrier was equipped with swing-off device, both your car and barrier arm will be fine even the car hit the arm. Below ...

  A boom gate is typically designed to automatically open in the event of a power outage or failure. This is done to ensure that people can safely exit a facility or area, even if the electrical system fails.   Most boom barrier gates are equipped with a auto-open module which makes barrier gate automatically open if power is off. This allows the gate to continue automatic opening when t...