Simple operation lets you focus on your subject during alcohol screening! You won't need to take your eyes off of them to push or hold buttons, while still getting a fast, accurate reading. Easy recall of last test results too! Responds and resets in just minutes. Mouthpiece can be attached from either direction to give operator flexibility in choosing where to stand or which hand to use. Perfect for large crowd situations. Large LCD displays 5 color-coded light indicators to guide operator through the test sequence. Accuracy +/- .005 BRAC up to 0.100 BRAC and +/- 5% above 0.100 BRAC. Meets D.O.T. specifications and is listed on the NHTSA Conforming Products List. Audible tones indicate the unit's status and errors. Comes with five disposable mouthpieces (extra mouthpieces available) and hard carrying case. Manual sampling override for "shy lung" condition. Portable for testing anywhere. Uses five AA batteries (included). 1-3/4"D x 6-3/4"L x 3-1/4"W. Weighs 1 lb.