Alerting systems are electronic devices that, as the name suggests, are used to inform the concerned about a potential hazardous situation. These devices are very widely used now-a-days in various fields, and with the advancement in technology, they are getting better and more fields are being added. These systems basically consist of a sensor, attached to a PCB (Printed Circuit Board) coded according to the use. Now the output of the PCB can be taken in the form of a light, sound, or an electromagnetic signal emission. The input if the system is fed from the trigger sensor (light, sound, proximity, touch, heat or acceleration) that goes off once the required conditions are met, i.e. if there is a danger.