KPT supply Quality Infrared Laser test pen (currency detector) with good price for US$, English Pound, RMB,EUR etc. ... tools available in the world now, Infrared Laser Test Pen is a effective currency detector used for testing currency, securities, brand, certificates ... .3 / 80MaterialCoppeBatteryAAAX2Focus Length cm3CMOS chip Vo<100mWCharacteristicBlueIR (nm)980 Infrared (IR)Laser Test Pen