A control system is provided with: a control device that controls facility equipment on the basis of previously set control information; and a terminal that communicates with the control device. The terminal has: an image capturer that captures an image; an analyzer that acquires setting-support information for setting the control information in the control device by analyzing the image captured by means of the image capturer; and a transmitter that transmits to the control device the setting-support information acquired by means of the analyzer. The control device has: a receiver that receives the setting-support information transmitted from the transmitter; and a setter that sets the control information on the basis of the setting-support information received by means of the receiver.

A pressure vent valve for ventilation of the interior of a motor vehicle, with a frame with at least one sealing surface and with at least one flexible valve flap mounted on the frame. In an idle position, the valve flap assembly abuts the sealing surface to prevent airflow through the pressure vent valve. When a sufficient pressure occurs, the valve flap assembly assumes an open position lifted from the sealing surface to allow airflow through the pressure vent valve. The pressure vent valve further includes an installation indicator formed in or on the frame to ensure alignment during installation.