Quha Sento User Manual page 4

Using Quha Sento
Quha Sento detects the air flow (puff) coming from the user's
mouth. The puff sensor is located at the end of the sensor arm.
The more air flow there is to the sensor, the more accurately the
switch can be controlled. Therefore, it is necessary to place the
sensor to a position that the air flow can reach.
When the headband is on the
user's head, the flexible sensor
arm is adjusted so that the sensor
is located in front of the user's
mouth at a comfortable distance.
A typical distance is 1-5 cm (0.4-
2 inch). The user is suggested to
try different positions because the
air flow strength varies greatly.
With some experimenting, a good
position is found in a few minutes.
Testing the switch is simple. Puff into the sensor and a click is
performed. Puff and keep puffing into the sensor and a long click
(dragging) is performed as long as the puff continues.
Compatibility
Quha Sento is compatible with the Quha Zono gyroscopic mouse
and the Quha universal connection adapter.