Great Sale Factory Hand Held Metal Detector with 9V Dry Battery Used in School

Great Sale Factory Hand Held metal Detector with 9V Dry Battery Used in SchoolTechnical specifications
Unit Dimension: 410(L)* 85(W)* 45(H) mm
Power voltage: standard 9V battery
Operating voltage: 7V-9V
Operating Current: <50mA
Alarm terms: sound (vibration) and light alarm simultaneously
Waterproof: IP31
Alarm Sound: ≥75dB(A)
Operation Frequency: 40KHz
Housing material: ABS- black
Package: 25pcs/carton
Gross Weight for a carton: 12kgs
Carton Dimension: 480(L) X 280(W) X 440(H) mmCharacteristicsPortable metal detector, convenient to take.It can be recharged. It needs 4-6 hours for charging. (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 metal detector will only alarm when it finds big metal objectHolster (for option)Earphome (for option)
High Sensitivity
Pin: 30-60mm 64-Pistol : 180-195mm;
6 inch Knife: 160-180mm; Steel ball with 20mm diameter: 120mm;
One Yuan coin: 75-100mmUse domain
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.