McKenna Karpan
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Cesta: Fire Safety

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Cesta is a fire safety device installed on doors that provides a clearly illuminated exit strategy with the use of LED lights to project a safe exit path. The device will monitor heat and blocked air using infrared sensors to display an alert to the user, letting them know if the exit is safe to use in an emergency evacuation. The device would be used in large buildings like hotels, offices, or in places where people have limited mobility such as in senior housing or assisted living situations.  


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Wifi Transmitters within the housing connect the all of the Cesta devices in the hall and on the floor and work together to get a full scan of the space. This way the devices are able to map out where the danger is coming from and use light projections to direct people in the opposite direction, leading them to safe exits from the building.


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Users within the room would easily be able to read the angle of the screen and see if it is safe to open the door and leave the room, even before they reach the door. The action of looking at the screen will be more instinctive to a person in a high stress situation than remembering to feel the door handle with the back of your hand to determine if an exit is safe.

The screens would activate when fire is detected though the buildings standard fire detectors or when detected on the infrared sensors on the Cesta devices. To make the product work internationally, when installing the device you would be able to change from F ° to C . The imagery is in International Code NFPA 170: Symbol for emergency exit route.


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The product would be installed by first drilling a 2.5in hole in the door below the door handle. The main body is installed though the hole and on the other side the screw piece is screwed in and adjustable based on the thickness of the door. The wires for the battery holder, LED light, infrared transmitter and receiver are pulled through to the other side and lined up using the plastic light alignment. Finally the back plate is inserted into pins in the plastic aligner to complete the device assembly.