Detective Device Dealers in Kottayam

A metal detector is an electronic instrument which detects the presence of metal nearby. Metal detectors are useful for finding metal inclusions hidden within objects or metal objects buried underground. They often consist of a handheld unit with a sensor probe which can be swept over the ground or other objects. If the sensor comes near a piece of metal this is indicated by a changing tone in earphones or a needle moving on an indicator. Usually the device gives some indication of distance the closer the metal is the higher the tone in the earphone or the higher the needle goes. Another common type are stationary walk through metal detectors used for security screening at access points in prisons court houses and airports to detect concealed metal weapons on a persons body.   Types Walk Through Metal Detectors Hand Held Metal Detectors Metal Detector Technology Pinpoint Mode and Depth Indicator.

A beam smoke detector that is uniquely suited for protecting open areas with high ceilings where other methods of smoke detection are difficult to install and maintain.beam detectors are designed to operate over long distances typically up to 110 metres and require a straight uninterrupted direct line of sight.