Specification :

Technical specifications
Operating frequency: 20 KHz
Unit Weight: 272g ( including the battery)
Handle Dimension: 30 X30mm
Unit Dimension: 440( L) X 55( W) X 145( H) mm
Carton Dimension: 460( L) X 305( W) X 582( H) mm
Sensitivity Adjustable: manual
Indicator: BZ, vibration motor
Battery: a 9v battery
Operating Temperature: -5° C to + 55° C
Control: Circulation switch ( ON, OFF, sound & light alarm or vibration)

Characteristics
It features simple operation, exquisite design, and convenient conservation
Low failure rate, can detect ferrous metal and non-ferrous metal
High sensitivity, can easily detect pin-sized metal articles
Indication of low battery voltage: gives continual sound alarm or vibration
Alarm: sound and light alarm simultaneously, or vibration and light alarm
Adopt cycle-switch to switch sound alarm to hidden vibration alarm respectively

Detecting distance:
DIP14 IC ( integrate circuit) 5mm ;
64 pistol 150mm

Use domain
For security use: detecting weapons, such as: knife, gun and so on.
For factory or store use: detect any metal articles on the workers’ body
For examination place: detect forbidden tools, such as: telephone, electronic dictionary and so on.