Advanced nm hot-wire alcohol sensorquick response,excellet accuracysmart mcu controldirect testing process guidelcd indication,backup lampno touch health designvisible and audio warning beyond pre-set limitpower saving design,low battery indicationdetecting range:0.00-1.00mg/laccuracy:+/-5% at 0.22mg/l(0.05%bac)warm-up time:<10 secdisplay:3 digital lcdpower:3vdc(2xaaa batteries)conditions:0-45c