Basic technical indicators The applicable liquid packaging materials It s able to detect iron, aluminum, plastic, glass and ceramic materials for packaging liquid The detecting dangerous liquids category Flammable, explosive, corrosive hazardous liquids The detecting the volume size Ceramic pots, glass bottles, PET plastic bottles ≤ 50mm diameter ≤ 85mmMetal cans (iron, aluminum cans) ≤ 50mm diameter ≤ 66mmPing / tank liquid ≥ 100ml The detecting the effective distance 30mm (from the bottom of the container) Hazardous liquid display The light is red, accompanied by the long sound of the buzzer Security liquid display The indicator is green, and accompanied by a short ring alarm Error operation display The light is yellow, accompanied by the long sound of the buzzer Boot time 3s, without pr...