Firstly, install 2 section AAA battery, holding down the “POWER” button, at the same time to the acquisition mouth blown, there will be 5 seconds of acquisition time (yellow and red light will be lit at the same time), as a result ,the green light is safe, only yellow warning state, the light is red light is the dangerous state.
Function : 0.00-0.02%BAC(Green LED) 0.02-0.05%BAC(Yellow LED) Over 0.05%BAC(Red & Yellow LED)
Description: 100% Brand New and quality
Net Weight :22g
Battery: 2Pcs (NOT included )
1 x Breath Alcohol Tester
Note:1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!2. Please allow 1-3 cm measuring deviation due to manual measurement .3. Asian size is smaller than EU/US/UK size, please check the detail size information before purchasing. Thanks.