... to carry Introduction This product is a alcohol tester designed for iPod touch5,iPhone5,iPad4,iPad mini, ... unlock iPhone , then press switch of tester for a long time till Tester alert short buzzing, at the same ... countdown,pls let mouth close to pore under tester, and blow to air hole and exhale into ... gas or sundries adhere to the tester sensor surface,when the tester from out of the packaging for ...