ALLOSUN TS80A Security Wand Handheld Metal Detector Black

This device is ideal for use in air- Port, industrial facilities, government buildings, or anywhere security is needed. The sensitiveness of this product able to detect metal object such as 25 cents coin. When metal object was detected it will sound and vibrate with LED indicator. Sensitivity: A 25 cent coin(USD) 60mm Iron pipe of 20mm 100mm Operating Environment: -10~+50 ?,<85%RH Quiescent Operating Current: <6mA Weight: About 230g Length: 395mm(in use) 260mm(in storage) Battery: 9V,6F22 or equivalent(Not Provided by seller) Operating Frequency: About 28kHz Tuning: Automatic Alarm: LED light & audio/vibration