Fire and Burglar Alarms are security systems that prevent invasion of an intruder and prevent damages caused by fire. These are electronic alarms designed to alert users of specific dangers.

Burglar alarm systems are available in different types according to control panels, keypads, sensors, and motion detectors. Such systems commonly use security sensors that indicate opening of a door or window or detect motion via passive infrared (PIR).

The type of sensors designed for indoor use are divided among passive infrared detectors, ultrasonic detectors, microwave detectors, photo-electric beams, glass break detectors, and smoke, heat and carbon monoxide detectors. Passive infrared detectors detect changes in the temperature caused by an object’s presence. Ultrasonic detectors use transmission of ultrasonic sound waves to detect change in frequency due to motion of an object. Microwave detectors use microwaves through reflection or reduction in beam intensity. Photo-electric beams transmit visible or infrared lights across an area where the beams may be obstructed. Glass break detectors generate a sound when a glass perimeter is broken.

The type of sensors designed for outdoor use are divided among vibration sensors, passive magnetic field detection, E-field, microwave barriers, microphonic systems, taut wire fence systems, fibre optic cables, and H-Field. Vibration sensors are the most affordable fence mounted system. Passive magnetic field detection is the best solution for buried systems. E-field can be installed on building perimeters, fences, and walls. Microwave barriers produce electromagnetic beams that create invisible but sensitive wall of protection. Microphonic systems are low cost. Taut wire fence systems are very reliable but expensive. Fibre Optic Cables are similar to microphonic systems with very simple configuration and easy installation. H-field is concealed as a buried form.

Commercial and residential fire alarm systems and detectors protect businesses, homes, and families with state of the art fire alarms that detect possible fire dangers through smoke and other environmental changes associated with combustion.

Fire alarm systems that are manually activated are break glass stations, buttons and manual pull station that are located near exits and must be operated before an alarm happens.

Fire alarm systems that are automatically activated respond to detectable physical changes associated with fire. These physical changes may be of convected thermal energy, change in heat, detection of combustion products, detection of smoke, radiant energy, detection of flames, detection of carbon monoxide, detection of extinguishing agents, and water-flow detection. Other innovations use cameras and computer algorithms that analyze visible effects of fire.