Product Name: MD3003b1 High Quality Hand Held metal Detector School Security metal Detector Model NO.: MD3003B1 Alarm Form: Sound,Vibrate Application: Examination Room, Public Area, Factory, School Customized: Non-Customized Certification: CE, RoHS Name: MD3003b1 Type: Hand Held metal Detector Usage: Body Security Check Battery: 9V, Not Included Tuning: Automatic Indicators: Audio/Vibration Controls: Power/off Button Advantage: Lightweight MOQ: 25PCS Warranty: 1 Year Trademark: N/M Transport Package: Carton Box Specification: 20pcs one carton Origin: China HS Code: 8543709100 Product Description MD3003B1 high quality metal detector hobby metal detectorMD3003B1 hand held metal detector is also called small landmine detector, extensively used in landmine excavation force in the army.Easy Operation, exquisite design, convenient storage, large detecting area, stable performance and low trouble rate.High sensitivity, objects with the size of a pin or smaller can be detected easily. Sensitivity can be adjusted according to actual application.The best about this model is that, it's most cost-efficient among models of the same category.Package include:1 x metal detector1 x belt holster1 x english manualKey features of MD3003B1hand held metal detector:Mini type ,Simple operationHigh sensitivity : can detect the size of pin .When metal is detected with the sound ( or vibration ) and light alarm functionThe alkaline battery alarm proportion of 10 % to 15 % of work , can work for 40 hours .9V battery the alarm will automatically continuousParametersof MD3003B1 hand held metal detector:Power supply9V ( can work 40 hours normaly )Operating frequency20KHzDemention54*52*28CM/CTNAlarmsLight and vibration alarmCurrent50mAApplicationsof MD3003B1 hand held metal detector:Airports , railway stations , docks , prisons , customs , border control and other security departments of security checks;Medicine, food , commercial quality inspection system;Precious metal detection ( such as gold and silver jewelry factory ) , and other security checks.Notes :1, When the sensitivity adjustment too high, the boot will be issued after the continuous alarm sound, the sensitivity can be reduced.2, Cut off the power after use. Long-term should not remove the battery to prevent overnight, so as not to damage the circuit.3, The probe is fixed against a crackling sound when the metal will stop only when the metal continues to sweep audible.4.When turned on, the green light to dark and continuous alarm indicates that the voltage is less than has been unable to work , you should replace the battery .