Three types of ventilation light boxes (Introduction): Schematic diagram of signal control box design for ventilation methods in civil air defense engineering. Generally, there are two types of civil air defense control boxes: 6-way and 12-way. Therefore, the civil air defense control box can control 6-12 personal air defense three color signal light boxes, and of course, the middle part mainly depends on the customer's engineering needs. For example, in a project where three people are required to work on anti signal light boxes, customers need to purchase one person anti signal control box and six person anti signal light boxes, and directly control six light boxes using the civil air signal control box. By analogy, if 12 light boxes are needed to work, one control box should still be used to control it. However, one ventilation control box can control up to 12 person anti signal indicator light boxes. If there are more than 12 light boxes, an additional control box needs to be added to work. Three types of ventilation light box (introduction) device features: A. It has the function of sending signals and monitoring, which can detect signal transmission faults in a timely manner; B. Having a response signal from the receiving end, able to timely grasp the execution status of each duty position; C. Capable of conducting system self inspection and testing for easy maintenance and management; D. Strong universality, the system can be expanded arbitrarily, and is suitable for various scale civil air defense fortifications and zones. Three types of ventilation light boxes (Introduction) are mainly used for displaying and alarming the air quality status inside engineering shelters, to reflect the electronic signals of alarms transmitted from the control cabinet. It has two alarm modes: sound and light alarm, with good display performance and visual effects. The signal control box for civil air defense ventilation mode is used by the structural light box of the direct sales factory to display and alarm the air quality status inside the engineering shelter, mainly for three types of air quality situations: cleaning, isolation, and gas filtration. The lightbox uses three different colors of light to alert for three situations where air is not in use: clean - green light; Isolation - red light; Filtration - Yellow light
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