... 2.Adjustable Sensitivity 3.Four independence LED walk through Security metal detector Gate(XST-A4)specifications current : AC220V/50Hz Power :≤35w ... gateposts. 3. Application scope: It can be used in the factory, prison, court, exhibition hall, stadium, entertainment lieu, etc., ... coin, key, jewelry, leather belt button, etc.7. High capability of anti-interference: The adoption of digital, analogy and ...