... detect multi currency with Sound. 3. high sensitivity 5. Steady Infrared(IR) Anti-Counterfeit Detctor Model : HT1 1,Detecting Theory ... up-conversion Phosphors Anti-Stokes invisible Infrared theory,the product can detect item with infrared Anti-counterfeit material. 2,Application methoTo ... cm, Weight 30 gram,DC3V,AA battery,Looks like TV control,Plastic shell (Temporarily used, if need special shell, we ...