Operating Temperature -10 to 55 DegreeC, Frequency 22 KHz Handheld Metal Detector, Operating Humidity 0- 95 RH

Security such as knife, Detecting prevent taking contraband, Gun and similar offerings factory prevent the loss of valued objects. Education area prevent taking cheat, Tool, Such electronic dictionary, As telephone, And so on. Security detecting prevent taking contraband, Such as knife, Gun and so on. Factory prevent the loss of valued objects. Education area prevent taking cheat, Tool, Such as telephone, Electronic dictionary, And so on portable convenient to, Metal detector take. It may serve as recharged. It needs 4, 6 hours for charging. Standard 9v battery, The charger and rechargeable battery are ordered additional the alarm terms is sound and light alarm simultaneously, Or vibration and light alarm simultaneously. You can choose the operate terms optionally. When the low sensitivity on, Off is pressed, The metallic object locator will only alarm when it finds big metal object usb charge, Li battery cable for option battery saving function automatically power off after one minute if no use. For option