Breath alcohol tester Three test steps with LED indication Safety: under 0.02% BAC (0.1 mg/l BRAC) Caution: 0.02%~0.05% BAC (0.1~0.25 mg/l BRAC) Danger: over 0.05% BAC (0.25 mg/l BRAC) Audible alert Quick response and resume Clock with 12/24 format Five alarms Countdown and count-up timer keeps the deadline of parking