Shenzhen XinTaiAn Tech Co.,Ltd is one of the professional China security detection manufacturers and suppliers,Website:http://www.xtaeassystem.com, welcome to wholesale cheap security detection from our factory.Product Features:Optimum sensitivity with automatic retuning - never needs adjustingAccurate detection of all ferrous, non-ferrous and stainless steel weapons, contraband and other metallic objectsElongated profile offers 360° detection coverage plus tip pinpointing for easy scanning from head to footEasy and convenient to use with one-touch button and three-color LED lightsClear audible or Silent / Vibrate LED alarm signalRugged injection molded construction including structurally isolated coil for added impact absorptionLarge 9.5" scan area allows thorough scanning with minimum passesErgonomically designed grip fits comfortably in virtually every handEasy ON / OFF battery cover9V battery (included) operationPower switch and LEDs positioned for easy access and high visibilitySpecifications:Operating Temperatures -35°F (-37°C) to 158°F (70°C)Humidity To 95% non-condensingOperating Frequency 93 kHzAudio Frequency 2kHz WarbleTuning Automatic