| Fire and Burglar Alarms are security systems that | | | | magnetic field detection is the best solution for buried |
| prevent invasion of an intruder and prevent damages | | | | systems. E-field can be installed on building |
| caused by fire. These are electronic alarms designed | | | | perimeters, fences, and walls. Microwave barriers |
| to alert users of specific dangers. | | | | produce electromagnetic beams that create invisible |
| Burglar alarm systems are available in different types | | | | but sensitive wall of protection. Microphonic systems |
| according to control panels, keypads, sensors, and | | | | are low cost. Taut wire fence systems are very |
| motion detectors. Such systems commonly use | | | | reliable but expensive. Fibre Optic Cables are similar to |
| security sensors that indicate opening of a door or | | | | microphonic systems with very simple configuration |
| window or detect motion via passive infrared (PIR). | | | | and easy installation. H-field is concealed as a buried |
| The type of sensors designed for indoor use are | | | | form. |
| divided among passive infrared detectors, ultrasonic | | | | Commercial and residential fire alarm systems and |
| detectors, microwave detectors, photo-electric | | | | detectors protect businesses, homes, and families |
| beams, glass break detectors, and smoke, heat and | | | | with state of the art fire alarms that detect possible |
| carbon monoxide detectors. Passive infrared | | | | fire dangers through smoke and other environmental |
| detectors detect changes in the temperature caused | | | | changes associated with combustion. |
| by an object’s presence. Ultrasonic detectors | | | | Fire alarm systems that are manually activated are |
| use transmission of ultrasonic sound waves to detect | | | | break glass stations, buttons and manual pull station |
| change in frequency due to motion of an object. | | | | that are located near exits and must be operated |
| Microwave detectors use microwaves through | | | | before an alarm happens. |
| reflection or reduction in beam intensity. | | | | Fire alarm systems that are automatically activated |
| Photo-electric beams transmit visible or infrared lights | | | | respond to detectable physical changes associated |
| across an area where the beams may be obstructed. | | | | with fire. These physical changes may be of |
| Glass break detectors generate a sound when a | | | | convected thermal energy, change in heat, detection |
| glass perimeter is broken. | | | | of combustion products, detection of smoke, radiant |
| The type of sensors designed for outdoor use are | | | | energy, detection of flames, detection of carbon |
| divided among vibration sensors, passive magnetic | | | | monoxide, detection of extinguishing agents, and |
| field detection, E-field, microwave barriers, | | | | water-flow detection. Other innovations use cameras |
| microphonic systems, taut wire fence systems, fibre | | | | and computer algorithms that analyze visible effects |
| optic cables, and H-Field. Vibration sensors are the | | | | of fire. |
| most affordable fence mounted system. Passive | | | | |