Read more Meaning of Display Contents 0.0 5 5 Breath Test Result BLOW Please Blow CALC Calculation WARM Warming Up APP MODE APP Working Mode CALIB Calibration e.g.1988 Residual Testing Times Before Next Recalibration K Constant Conversion Vaule between BrAC and BAC (function(f) {var _np=(window.P._namespace("AplusModule"));if(_np.guardFatal){_np.guardFatal(f)(_np);}else{f(_np);}}(function(P) { P.when('AplusModules-module-16-tech-specs').execute(function(resizeSpecTables) { resizeSpecTables('aplus-index-3', 'aplus-tech-spec-table', 'aplus-tech-spec-hide-loading'); }); })); YOMA AT800 Keychain Breathalyzer Please take care It is recommended to use the device 15 minutes after drinking. Hold your breath for 3 seconds while testing BAC. Please do not blow until the counting-down is finished, otherwise it will affect the performance. Operation steps (1) Take off battery cover, install 1 piece AAA 1.5V battery. Please be aware of the polarity. (2) Insert Mouthpiece. Press and hold power button until starting on, the following signs will turn up in sequence, an immediate beeping, display lights up, indicator lights take turns with red, green and blue, display shows residual blow times before next recalibration, and warming up counting down. (3) Please note it will stay at APP MODE if it's connected with App. (4) When warm up ends, there will be displaying BLOW. Please blow smoothly until you hear "Bi", results will be coming up in seconds. If there's failure, it will indicate by red light. When the result is below pre-set alarming threshold, the light will indicate by green, if above, it will be red light with beeping alarm. (5) Press and hold power button more than 3 seconds, it will turn off. If there's no any operation within a period of time, it will turn off automatically YOMA AT800 Keychain Breathalyzer * Sensor Type : Fuel Cell * Warm-up Time : 5 Seconds Counting Down * Blow Time : 5 seconds * Battery: 1X1.5V AAA * Accuracy : ±0.010%BAC at 0.050%BAC * Display of results : % BAC, ‰ BAC, mg / l * and g / l, mg/100mL * Detection range : 0~2.00mg/L, 0~0.400%BAC, 0~4.00g/L, 0~440mg/100mL * Working Time : ＞200 blowing times(full charge) What you Get Alcohol Tester x 1 Mouthpieces x 5 1.5V AAA battery x 1 Read more Read more