1. New alcohol tester 4-In-1 functions (4 sections of switch).
2. LED will change to Red if the alcohol content exceeds 0.25mg/l after blowing into mouthpieces abut 5 seconds.
3. UV LED is useful for checking the fluorescence fibril of currency and for authenticating banking/credit cards.
1. The array of 5 white LED’s will emit a strong illumination.
2. The ultrasonic sound wave will repel mosquitoes within a 2-meter radius.