It is composed of high-qualified magnetic materials, ABS streamline shell. With high sensitivity, this disturbance-proof detector is easy to operate and durable. Its high-powered swift is fit for voltages of all countries. It has LED sensitivity display and LED orientation display. It is mainly used to detect the tiny metals in the clothes, leathers, socks, slide fasteners, food, medicine, etc. Model: LT-500 Method of detecting: magnet-induce Sensitivity: It can reach a distance of 80mm with the Steel needle ?0.7*(L) 25mm in the surface of detected object, and can reach a 110mm with the Steel needle ?0.7*(L) 33mm. Adjuster of induce: 6 degrees Width of detecting surface: 500mm Method of giving signals: by buzzer and LED light Voltage: AC85-265V Power: approximately 10W Size: 400mm (L)*680mm (W) *70mm (H) Weight: approximately 11Kg