USER’S MANUAL

1. Frequency Selection:
   

For Dual Head Models (Chestpiece Selection)

You may select either the diaphragm for high frequency response or the open bell for low frequency perception. To do so, hold the chestpiece stem in one hand and rotate the chestpiece at 180 degree with the other hand until it clicks into place. To determine the activated side, fit the headset's eartips in the ear, tap lightly each side (one at a time ), Transmitted sound will indicate which side is in operation.

For Pressure Sensitive Models:

With the unique chestpiece design perception of both low and high frequency is available on the same side. The pressure sensitive diaphragm allows you to alter the frequency response by changing the contact pressure. Holding the chestpiece in place with light pressure will give you a low frequency response, whilst applying a firm fingertip pressure on the chestpiece gives a higher frequency response.

2. Binaural (Headset) Adjustments:
   

The 15 degree angle of the binaural stem gives a complete and acoustically tight sealed fit. The eartips should be directed forward, towards the bridge of the nose to fit.

3. Adjustment of Binaural’s Spring Tension:
   

a. Reduce Tension - Using both hands, grip the binaural firmly with the fingers at the center of the "Y" in the tubing, thumbs at each side where rd tubing branches out. Flex the binaural gradually until desired tension is obtained.

b. Increase Tension - Cross binaural tube and grasp each by fingers. Pull binaural tube outwards, gently increasing the pressure, releasing and testing until satisfied.

4. Diaphragm / Membrane:
   

Though extremely durable, in event that it needs to be replaced, observe the following steps.

a. Removal - Snap off the retaining ring and take out the old diaphragm.

b. Installation - Place the new diaphragm carefully the edge matching the entire diameter of the chestpiece.

c. Snap the retaining ring back into place, taking care that it engages completely.

5. Rapid ConversionTM Diaphragm / Non-Chill Ring:
   

a. Remove - Grasp the tab with your fingers and pull it up to completely lift the diaphragm / ring.

b. Install - Place the new diaphragm / ring carefully the edge matching the entire diameter of the chestpiece. Snap the ring back into place, taking care that it engages completely.

6. Care and Maintenance:

a. Avoid contacting with extreme heat, cold, solvents or oils.

b. Avoid prolonging exposure to direct sunlight.

c. Clean the stethoscope between patients using either a 70% isopropyl alcohol solution.

d. Remove the eartips from binaural for through cleaning.

e. Check whether the eartips are firmly fixed on regular basis.

f. Do not submerge the unit in any liquid or steam sterilization.

f. Do not submerge the unit in any liquid or steam sterilization

7. Storage and Transport Conditions:

Ambient temperature -10°C to +40°C

Relative humid: y 95% or below, non - condensing

Atmospheric pressure 700 - 1060 hPa

WARRANTY AND SERVICE PROGRAM

Your stethoscope is warranted against any defects in material and workmanship under normal use and service as follows:

1. Warranty extends to the original retail purchaser and commences on the date of delivery.

2. Your stethoscopes is warranted as follows: Eartips & diaphragm. 6 Month from date of purchase.

Chestpiece, binaural and metal parts (except spring and colored coating), Two (2) years from date of purchase.

3. Except in case of obvious abuse or accidental damage, if a material or manufacturing defect is discovered during the warranty period, repairs will be made without charge upon the return of the instrument to our distributor.