1. Display::

Digital display with 2 decimal point

2. Keyboard

2 keys simple operation; Start/Blow;  ON/OFF

3. Power Supply

3 * AAA battery

5. Auto flow monitoring.

Flow detect automatically

5. Long Term Storage condition:

-Temperature: 0 Degree C to +55 Degree C..

Humidity:  30 to 90% RH

6. Operating Temperature :

From 5℃ to +45 ℃, for optimum operation

7. Dimension

108 * 45 * 20 mm

8. Measurement Accuracy:

±0.04 mg/L at alert point

Drift: typically < 1.0 % of the measurement value/month

9. CERTIFICATED

GB/T 21254-2007

AS3527-1997 (QUANTITATIVE Type 2 Device)

10. Standard packing:

Including gift box; 2 pcs blow tubes ,

11. Optional packing/ accessory:

Metal case; mouthpiece , AAA battery