Highly efficient in detecting the needles (metals), Needle Detectors are widely in demand in various areas and places where security is a crucial aspect. The sensitivity of the detector is recorded to be Feâ¥0.8mm. These product have alarm feature which alarms the user on finding any needle in the luggage. There is also a conveyer belt for carrying the objects around with the noted speed of 32 min per minute. Needle Detectors works on the voltage consumption of 220 V / 110 V. The machine also has the sensitivity adjustment feature ranging from level 1 to level 10.