Alcoscan AL7000 is a Premium hand held, portable digital alcohol tester. 
This unit is suitable for personal use, in small workplaces and on the move for limited daily to weekly alcohol testing. 
The AL7000 sensor can be changed very easily and the unit doesn't need to be returned to us for calibration. Pre-calibrated sensors can simply be sent to your location. Clip out the old sensor and clip in the new sensor.
Annual calibration / Sensor replacement is recommended. 
SpecDetail
Indication of B.A.C0.00 to 0.40% B.A.C. or mg/l equivalent by LED display
Accuracy+/-0.010%BAC at 0.050%BAC
Mouth piece5 supplied with unit
SensorSemiconductor type alcohol sensor
Power supplyTwo 1.5V "AA" Alkaline batteries
Weight103g (Including batteries)
Dimension (mm)116 (height) X 50 (width) X 21
NoteAuto power off
Battery Low indication
Air flow rate checking 
Features the ability to change sensors on one's own.