A control system includes a control module (34), a control device (20) mounted to a door (12) and controllable by the control module (34), and a manager mobile device (54) operable to connect with the control module (34) to obtain management authority to access to the door (12). The control device (20) includes a latch (24) for retaining the door (12) in a closed position. A vibration detecting unit (66) is mounted to the door (12) or the control device (20) and is electrically connected to the control module (34). When the vibration detecting unit (66) detects vibrations of the door (12) or the control device (20), the manager mobile device (54) is activated, and the image of the outside of the door (12) is transmitted to the manager mobile device (54), such that the manager can immediately know the situation outside the door (12).