AMAZON AFFILIATE

this field helps in identifying the presence of the metal and detecting it. it is a handheld device that is fitted with the sensor to trace the metal objects and a sound producing object that is used to generate a beep an alarm like sound when the metal comes closer to the device... some heavy duty detectors can also be carried on the vehicles. The technology of the metal detectors is used in the safety gadgets that are required to protect the places that require extra protection. They make a great device for the battlefields too where they are used for the detection of the landmines buried under the ground... The key factors include reliability, durability, performance, efficiency, and cost. It is very important to get an insight into all these factors. The most important of all being the price. The more you can spend the better metal detector you can acquire.